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  • 1. Abbott, Jessica K.
    et al.
    Innocenti, Paolo
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Chippindale, Adam K.
    Morrow, Edward H.
    Epigenetics and Sex-Specific Fitness: An Experimental Test Using Male-Limited Evolution in Drosophila melanogaster2013Inngår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 8, nr 7, s. e70493-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    When males and females have different fitness optima for the same trait but share loci, intralocus sexual conflict is likely to occur. Epigenetic mechanisms such as genomic imprinting (in which expression is altered according to parent-of-origin) and sex-specific maternal effects have been suggested as ways by which this conflict can be resolved. However these ideas have not yet been empirically tested. We designed an experimental evolution protocol in Drosophila melanogaster that enabled us to look for epigenetic effects on the X-chromosome-a hotspot for sexually antagonistic loci. We used special compound-X females to enforce father-to-son transmission of the X-chromosome for many generations, and compared fitness and gene expression levels between Control males, males with a Control X-chromosome that had undergone one generation of father-son transmission, and males with an X-chromosome that had undergone many generations of father-son transmission. Fitness differences were dramatic, with experimentally-evolved males approximately 20% greater than controls, and with males inheriting a non-evolved X from their father about 20% lower than controls. These data are consistent with both strong intralocus sexual conflict and misimprinting of the X-chromosome under paternal inheritance. However, expression differences suggested that reduced fitness under paternal X inheritance was largely due to deleterious maternal effects. Our data confirm the sexually-antagonistic nature of Drosophila's X-chromosome and suggest that the response to male-limited X-chromosome evolution entails compensatory evolution for maternal effects, and perhaps modification of other epigenetic effects via coevolution of the sex chromosomes.

  • 2. Adamik, Peter
    et al.
    Emmenegger, Tamara
    Briedis, Martins
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Henshaw, Ian
    Krist, Milos
    Laaksonen, Toni
    Liechti, Felix
    Prochazka, Petr
    Salewski, Volker
    Hahn, Steffen
    Barrier crossing in small avian migrants: individual tracking reveals prolonged nocturnal flights into the day as a common migratory strategy2016Inngår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, artikkel-id 21560Artikkel i tidsskrift (Fagfellevurdert)
  • 3.
    Ah-King, Malin
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Historisk-filosofiska fakulteten, Centrum för genusvetenskap.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Problemet med "könsroller" kvarstår2013Inngår i: Tidskrift för Genusvetenskap, ISSN 1654-5443, E-ISSN 2001-1377, nr 1, s. 136-137Artikkel i tidsskrift (Annet vitenskapelig)
  • 4.
    Ah-King, Malin
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Historisk-filosofiska fakulteten, Centrum för genusvetenskap.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    The "Sex Role" Concept: An Overview and Evaluation2013Inngår i: Evolutionary biology, ISSN 0071-3260, E-ISSN 1934-2845, Vol. 40, nr 4, s. 461-470Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    "Sex roles" are intuitively associated to stereotypic female and male sexual strategies and in biology, the term "sex role" often relates to mating competition, mate choice or parental care. "Sex role reversals" imply that the usual typological pattern for a population or species is deviates from a norm, and the meaning of "sex role reversal" thus varies depending upon whatever is the usual pattern of sex-typical behavior in a given taxon. We identify several problems with the current use of the "sex role" concept. (1) It is typological and reflects stereotypic expectations of the sexes. (2) The term "sex role" parses continuous variation into only two categories, often obscuring overlap, between the sexes in behavior and morphology, and variability in relation to ecological circumstances. (3) Common generalizations such as "sex role as seen in nature" mask variation upon which selection may act. (4) The general meaning of "sex roles" in society (i.e. "socially and culturally defined prescriptions and beliefs about the behavior and emotions of men and women") is contrary to biological "sex role" concepts, so that confusing the two obscure science communication in society. We end by questioning the validity of the "sex role" concept in evolutionary biology and recommend replacing the term "sex role" with operational descriptions.

  • 5.
    Ah-King, Malin
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Historisk-filosofiska fakulteten, Centrum för genusvetenskap.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Vad kan vi lära av biologisk forskning om “könsroller”?2012Inngår i: Tidskrift för Genusvetenskap, ISSN 1654-5443, E-ISSN 2001-1377, Vol. 6, nr 4, s. 51-56Artikkel i tidsskrift (Fagfellevurdert)
  • 6.
    Ahnesjo, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Craig, J. F.
    The biology of Syngnathidae: pipefishes, seadragons and seahorses2011Inngår i: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 78, nr 6, s. 1597-1602Artikkel i tidsskrift (Annet vitenskapelig)
  • 7.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Bokrecension av Retorik för naturvetare: skrivande som fördjupar lärandet2014Inngår i: Högre Utbildning, ISSN 2000-7558, E-ISSN 2000-7558, Vol. 4, nr 1, s. 83-85Artikkel, omtale (Annet vitenskapelig)
  • 8.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Equal Opportunity for Sexual Evolution2011Inngår i: BioScience, ISSN 0006-3568, E-ISSN 1525-3244, Vol. 61, nr 8, s. 641-642Artikkel, omtale (Annet vitenskapelig)
  • 9.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Mate Choice in Males and Females2010Inngår i: Encyclopedia of Animal Behavior / [ed] Michael D. Breed and Janice Moore, Oxford: Academic Press, 2010, s. 394-398Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Finding a ‘dream mate’ is important for fitness in many sexually reproducing animals because half the genome of the offspring will come from this mate. Individuals that choose their mates carefully may gain both direct benefits (i.e., good care, territories, and other resources) and indirect benefits (genes that improve offspring viability or attractiveness). Mate choices occur in both sexes and the same individuals can be both choosy and competitive. Mate choice and mating competition often result in sexual selection and the evolution of secondary sexual characters. Mate choice is interactive, context dependent, operates on multiple traits, and varies in time and space.

  • 10.
    Ahnesjö, Ingrid
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Seahorses and Their Relatives2010Inngår i: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 77, nr 1, s. 308-309Artikkel, omtale (Annet vitenskapelig)
  • 11.
    Ahnesjö, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Berglund, Anders
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Forsgren, Elisabet
    Norsk institutt for naturforskning i Trondheim, Norway.
    Karlsson, Anna
    Enheten för biologisk mångfald och områdesskydd, Havs och Vattenmyndigheten, Göteborg.
    Kvarnemo, Charlotta
    Zoologi, Göteborgs universitet, Göteborg.
    Magnhagen, Carin
    Fiskbiologi, Sveriges lantbruksuniversitet (SLU), Umeå.
    Rosenqvist, Gunilla
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Etologi, NTNU, Trondheim, Norway.
    Östlund Nilsson, Sara
    Nasjonalbiblioteket, Oslo, Norway.
    En beteende-ekologisk forskningsperiod på Klubbans biologiska station: Rapport från återträff med Doktorer som disputerade (1983-2001) på avhandlingar med fältarbete på Klubbans Biologiska station. I en värld av kantnålar, stubbar, spiggar och nudingar.2018Rapport (Annet (populærvitenskap, debatt, mm))
    Abstract [en]

    We had the fortune as PhD-students and scientists in Animal Ecology at Uppsala University, to spend joyful and creative field work summers at Klubban Biological Station, during the 1980-90’s. A reunion in June 2018 resulted in this report highlighting research on pipefishes, gobies, sticklebacks and nudibranchs. Our research on these animals have provided novel insights and knowledge of the process of sexual selection and paternal care. These animals have, in many aspects, now become model organisms in evolutionary behavioral ecology in marine environments. Our list of publications provides many examples of how environmental factors influence how sexual selection and mate choice operate, how predictors like potential reproductive rates, operational sex ratios work and how male parental care is prominent in influencing selection. This research, that started at Klubban, has broadened our understanding of the ecological importance of shallow marine areas. The evolutionary understanding of how males and females can behave and how adaptive traits are selected in interaction with social and an increasingly changing ambient environment is in focus in our continued scientific endeavors. We have happily compiled this report illustrating how science and scientist can stimulate each other at a wonderful place like Klubban Biological Station, with the access to amazing organisms like pipefishes, gobies, sticklebacks and nudibranchs.

  • 12.
    Ahnesjö, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Braga Goncalves, Ines
    Mate Choice in Males and Females2017Inngår i: Reference Module in Life Sciences, Elsevier, 2017, s. 394-398Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    To find a “dream mate” is important for fitness in all sexually reproducing animals because half of the genome of one’s offspring comes from the chosen mate. Individuals that choose their mates may gain both direct benefits (ie, care or other resources) and indirect benefits (genes improving offspring viability or attractiveness). Mate choice occurs in males and females, and individuals may simultaneously be choosy and compete to be chosen. Processes that often result in sexual selection and in the evolution of secondary sexual characters. Mate choice is context-dependent, operates on multiple traits and varies in time and space.

  • 13.
    Ahnesjö, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Braga Goncalves, Ines
    Mate choice in males and females2019Inngår i: Encyclopedia of Animal Behavior / [ed] Choe J.C., Elsevier, 2019, 2, s. 432-440Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    To find a “dream mate” is important for fitness in all sexually reproducing animals because half of the genome of one’soffspring comes from the chosen mate. Individuals that choose their mates may gain both direct benefits (i.e., care or other resources) and indirect benefits (genes that improve offspring viability or attractiveness). Mate choice occurs in males and females, and individuals may both be choosy and compete to be chosen. Both processes often result in sexual selection and in the evolution of secondary sexual characters. Mate choice is context-dependent, operates on multiple traits and varies in time and space.

  • 14.
    Ahnesjö, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Forsgren, Elisabet
    Kvarnemo, Charlotta
    Variation in sexual selection in fishes2008Inngår i: Fish Behaviour / [ed] Carin Magnhagen, Victoria A. Braithwaite, Elisabet Forsgren, B.G. Kapoor, Enfield: Science Publishers Inc., 2008, s. 303-335Kapittel i bok, del av antologi (Fagfellevurdert)
  • 15. Alatalo, R. V.
    et al.
    Eriksson, D.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Larsson, K.
    EXPLOITATION COMPETITION INFLUENCES THE USE OF FORAGING SITES BY TITS - EXPERIMENTAL-EVIDENCE1987Inngår i: Ecology, Vol. 68, nr 2, s. 284-290Artikkel i tidsskrift (Fagfellevurdert)
  • 16. Alatalo, R. V.
    et al.
    Eriksson, D.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Larsson, K.
    Exploitation competition influences the use of foraging sites by tits: experimental evidence.1987Inngår i: Ecology, Vol. 68, nr 2, s. 284-290Artikkel i tidsskrift (Fagfellevurdert)
  • 17. Alatalo, R. V.
    et al.
    Eriksson, D.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    HYBRIDIZATION BETWEEN PIED AND COLLARED FLYCATCHERS - SEXUAL SELECTION AND SPECIATION THEORY1990Inngår i: Journal of Evolutionary Biology, Vol. 3, nr 5-6, s. 375-389Artikkel i tidsskrift (Fagfellevurdert)
  • 18. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    GENETIC COMPONENT OF MORPHOLOGICAL-DIFFERENTIATION IN COAL TITS UNDER COMPETITIVE RELEASE1988Inngår i: Evolution, Vol. 42, nr 1, s. 200-203Artikkel i tidsskrift (Fagfellevurdert)
  • 19. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Linden, M.
    Lundberg, A.
    INTERSPECIFIC COMPETITION AND NICHE SHIFTS IN TITS AND THE GOLDCREST - AN EXPERIMENT1985Inngår i: Journal of Animal Ecology, Vol. 54, nr 3, s. 977-984Artikkel i tidsskrift (Fagfellevurdert)
  • 20. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Linden, M.
    Lundberg, A.
    Interspecific competition and niche shifts in tits and the goldcrest: an experiment.1985Inngår i: Journal of Animal Ecology, Vol. 54, nr 3, s. 977-984Artikkel i tidsskrift (Fagfellevurdert)
  • 21. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Breeding success and hybridization of collared flycatcher Ficedula albicollis, and pied flycatcher, Ficedula hypoleuca on Oland 19811982Inngår i: Calidris, Vol. 11, nr 2, s. 103-108Artikkel i tidsskrift (Fagfellevurdert)
  • 22. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    ( Breeding success and hybridization of collared flycatcher, Ficedula albicollis, and pied flycatcher, Ficedula hypoleuca, on Oland 1981). | Hackningsframgang och forekomst av halsbandsflugsnappare Ficedula albicollis, svartvit flugsnappare Ficedula hypoleuca samt blandpar pa Oland 1981.1982Inngår i: Calidris, Vol. 2, nr 82, s. 103-108Artikkel i tidsskrift (Fagfellevurdert)
  • 23. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    DO FEMALES PREFER OLDER MALES IN POLYGYNOUS BIRD SPECIES1986Inngår i: American Naturalist, Vol. 127, nr 2, s. 241-245Artikkel i tidsskrift (Fagfellevurdert)
  • 24. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    EXTRA-PAIR PATERNITY AND HERITABILITY ESTIMATES OF TARSUS LENGTH IN PIED AND COLLARED FLYCATCHERS1989Inngår i: Oikos, Vol. 56, nr 1, s. 54-58Artikkel i tidsskrift (Fagfellevurdert)
  • 25. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Extra-pair paternity and heritability estimates of tarsus length in pied and collared flycatchers1989Inngår i: Oikos, Vol. 56, nr 1, s. 54-58Artikkel i tidsskrift (Fagfellevurdert)
  • 26. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    High frequency of cuckoldry in pied and collared flycatchers.1984Inngår i: Oikos, Vol. 42, nr 1, s. 41-47Artikkel i tidsskrift (Fagfellevurdert)
  • 27. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Hybridization and breeding success of collared and pied flycatchers on the island of Gotland.1982Inngår i: Auk, Vol. 99, nr 2, s. 285-291Artikkel i tidsskrift (Fagfellevurdert)
  • 28. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    HYBRIDIZATION AND BREEDING SUCCESS OF COLLARED AND PIED FLYCATCHERS ON THE ISLAND OF GOTLAND1982Inngår i: Auk, Vol. 99, nr 2, s. 285-291Artikkel i tidsskrift (Fagfellevurdert)
  • 29. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Interspecific competition and niche changes in tits ( Parus spp.): evaluation of nonexperimental data.1986Inngår i: American Naturalist, Vol. 127, nr 6, s. 819-834Artikkel i tidsskrift (Fagfellevurdert)
  • 30. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    INTERSPECIFIC COMPETITION AND NICHE CHANGES IN TITS (PARUS SPP) - EVALUATION OF NONEXPERIMENTAL DATA1986Inngår i: American Naturalist, Vol. 127, nr 6, s. 819-834Artikkel i tidsskrift (Fagfellevurdert)
  • 31. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    MALE COLORATION AND SPECIES RECOGNITION IN SYMPATRIC FLYCATCHERS1994Inngår i: Proceedings of the Royal Society B-Biological Sciences, Vol. 256, nr 1346, s. 113-118Artikkel i tidsskrift (Fagfellevurdert)
  • 32. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    PHENOTYPIC SELECTION ON HERITABLE SIZE TRAITS - ENVIRONMENTAL VARIANCE AND GENETIC RESPONSE1990Inngår i: American Naturalist, Vol. 135, nr 3, s. 464-471Artikkel i tidsskrift (Fagfellevurdert)
  • 33. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    WHY DO YOUNG PASSERINE BIRDS HAVE SHORTER WINGS THAN OLDER BIRDS1984Inngår i: Ibis, Vol. 126, nr 3, s. 410-415Artikkel i tidsskrift (Fagfellevurdert)
  • 34. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Ulfstrand, S.
    HABITAT SHIFT OF THE WILLOW TIT PARUS MONTANUS IN THE ABSENCE OF THE MARSH TIT PARUS PALUSTRIS1985Inngår i: Ornis Scandinavica, Vol. 16, nr 2, s. 121-128Artikkel i tidsskrift (Fagfellevurdert)
  • 35. Alatalo, R. V.
    et al.
    Gustafsson, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lundberg, A.
    Ulfstrand, S.
    Habitat shift of the willow tit Parus montanus in the absence of the marsh tit Parus palustris.1985Inngår i: Ornis Scandinavica, Vol. 16, nr 2, s. 121-128Artikkel i tidsskrift (Fagfellevurdert)
  • 36.
    Alavioon, Ghazal
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Garcia, Andrea Cabrera
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    LeChatelier, Magali
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Maklakov, Alex A.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Univ East Anglia, Sch Biol Sci, Norwich Res Pk, Norwich, Norfolk, England.
    Immler, Simone
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi. Univ East Anglia, Sch Biol Sci, Norwich Res Pk, Norwich, Norfolk, England.
    Selection for longer lived sperm within ejaculate reduces reproductive ageing in offspring2019Inngår i: EVOLUTION LETTERS, ISSN 2056-3744, Vol. 3, nr 2, s. 198-206Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Males produce numerous sperm in a single ejaculate that greatly outnumber their potential egg targets. Recent studies found that phenotypic and genotypic variation among sperm in a single ejaculate of a male affects the fitness and performance of the resulting offspring. Specifically, within-ejaculate sperm selection for sperm longevity increased the performance of the resulting offspring in several key life-history traits in early life. Because increased early-life reproductive performance often correlates with rapid ageing, it is possible that within-ejaculate sperm selection increases early-life fitness at the cost of accelerated senescence. Alternatively, within-ejaculate sperm selection could improve offspring quality throughout the life cycle, including reduced age-specific deterioration. We tested the two alternative hypotheses in an experimental setup using zebrafish Danio rerio. We found that within-ejaculate sperm selection for sperm longevity reduced age-specific deterioration of fecundity and offspring survival but had no effect on fertilization success in males. Remarkably, we found an opposing effect of within-ejaculate sperm selection on female fecundity, where selection for sperm longevity resulted in increased early-life performance followed by a slow decline, while females sired by unselected sperm started low but increased their fecundity with age. Intriguingly, within-ejaculate sperm selection also reduced the age-specific decline in fertilization success in females, suggesting that selection for sperm longevity improves at least some aspects of female reproductive ageing. These results demonstrate that within-ejaculate variation in sperm phenotype contributes to individual variation in animal life histories in the two sexes and may have important implications for assisted fertilization programs in livestock and humans.

  • 37.
    Alavioon, Ghazal
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Hotzy, Cosima
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Nakhro, Khriezhanuo
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Rudolf, Sandra
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Scofield, Douglas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Zajitschek, Susanne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi. Spanish Natl Res Council, Donana Biol Stn, Seville 41092, Spain.
    Maklakov, Alex A
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Univ East Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England.
    Immler, Simone
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi. Univ East Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England.
    Haploid selection within a single ejaculate increases offspring fitness2017Inngår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, nr 30, s. 8053-8058Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    An inescapable consequence of sex in eukaryotes is the evolution of a biphasic life cycle with alternating diploid and haploid phases. The occurrence of selection during the haploid phase can have far-reaching consequences for fundamental evolutionary processes including the rate of adaptation, the extent of inbreeding depression, and the load of deleterious mutations, as well as for applied research into fertilization technology. Although haploid selection is well established in plants, current dogma assumes that in animals, intact fertile sperm within a single ejaculate are equivalent at siring viable offspring. Using the zebrafish Danio rerio, we show that selection on phenotypic variation among intact fertile sperm within an ejaculate affects offspring fitness. Longer-lived sperm sired embryos with increased survival and a reduced number of apoptotic cells, and adult male offspring exhibited higher fitness. The effect on embryo viability was carried over into the second generation without further selection and was equally strong in both sexes. Sperm pools selected by motile phenotypes differed genetically at numerous sites throughout the genome. Our findings clearly link within-ejaculate variation in sperm phenotype to offspring fitness and sperm genotype in a vertebrate and have major implications for adaptive evolution.

  • 38.
    Alström, Per
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Swedish Univ Agr Sci, Swedish Species Informat Ctr, Box 7007, SE-75007 Uppsala, Sweden.;Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China..
    Cibois, Alice
    Nat Hist Museum Geneva, Dept Mammal & Ornithol, CP 6434, CH-1211 Geneva 6, Switzerland..
    Irestedt, Martin
    Swedish Museum Nat Hist, Dept Bioinformat & Genet, POB 50007, SE-10405 Stockholm, Sweden..
    Zuccon, Dario
    UMS MNHN CNRS 2700 Outils & Methodes Systemat Int, CP 51,57 Rue Cuvier, F-75231 Paris 05, France.;Sorbonne Univ, Museum Natl Hist Nat, UMR7205,EPHE, Inst Systemat,Evolut,Biodiversite,CNRS,MNHN,UPMC, CP 51,57 Rue Cuvier, F-75231 Paris 05, France..
    Gelang, Magnus
    Gothenburg Nat Hist Museum, Box 7283, S-40235 Gothenburg, Sweden..
    Fjeldsa, Jon
    Nat Hist Museum Denmark, Zool Museum, Ctr Macroecol Evolut & Climate, Univ Pk 15, DK-2100 Copenhagen, Denmark..
    Andersen, Michael
    Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA.;Univ New Mexico, Museum Southwestern Biol, Albuquerque, NM 87131 USA..
    Moyle, Robert
    Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA.;Univ Kansas, Biodivers Inst, Lawrence, KS 66045 USA..
    Pasquet, Eric
    UMS MNHN CNRS 2700 Outils & Methodes Systemat Int, CP 51,57 Rue Cuvier, F-75231 Paris 05, France.;Sorbonne Univ, Museum Natl Hist Nat, UMR7205,EPHE, Inst Systemat,Evolut,Biodiversite,CNRS,MNHN,UPMC, CP 51,57 Rue Cuvier, F-75231 Paris 05, France..
    Olsson, Urban
    Univ Gothenburg, Dept Biol & Environm Sci Systemat & Biodivers, Box 463, S-40530 Gothenburg, Sweden..
    Comprehensive molecular phylogeny of the grassbirds and allies (Locustellidae) reveals extensive non-monophyly of traditional genera, and a proposal for a new classification2018Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 127, s. 367-375Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The widespread Old World avian family Locustellidae ('grassbirds and allies') comprises 62 extant species in 11 genera. In the present study, we used one mitochondrial and, for most species, four nuclear loci to infer the phylogeny of this family. We analysed 59 species, including the five previously unsampled genera plus two genera that had not before been analysed in a densely sampled dataset. This study revealed extensive disagreement with current taxonomy; the genera Bradypterus, Locustella, Megalurus, Megalurulus and Schoenicola were all found to be non-monophyletic. Non-monophyly was particularly pronounced for Megalurus, which was widely scattered across the tree. Three of the five monotypic genera (Amphilais, Buettikoferella and Malia) were nested within other genera; one monotypic genus (Chaetornis) formed a Glade with one of the two species of Schoenicola; whereas the position of the fifth monotypic genus (Elaphrornis) was unresolved. Robsonius was confirmed as sister to the other genera. We propose a phylogenetically informed revision of genus-level taxonomy, including one new generic name. Finally, we highlight several non-monophyletic species complexes and deep intra-species divergences that point to conflict in taxonomy and suggest an underestimation of current species diversity in this group.

  • 39.
    Alström, Per
    et al.
    Swedish Univ Agr Sci, Swedish Species Informat Ctr, POB 7007, S-75007 Uppsala, Sweden; Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Jonsson, Knud A
    Jon, Fjeldså
    Ödeen, Anders
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Ericson, Per G. P.
    Irestedt, Martin
    Dramatic niche shifts and morphological change in two insular bird species2015Inngår i: Royal Society Open Science, E-ISSN 2054-5703, Vol. 2, nr 3, artikkel-id 140364Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Colonizations of islands are often associated with rapid morphological divergence. We present two previously unrecognized cases of dramatic morphological change and niche shifts in connection with colonization of tropical forest-covered islands. These evolutionary changes have concealed the fact that the passerine birds madanga, Madanga ruficollis, from Buru, Indonesia, and São Tomé shorttail, Amaurocichla bocagii, from São Tomé, Gulf of Guinea, are forest-adapted members of the family Motacillidae (pipits and wagtails). We show that Madanga has diverged mainly in plumage, which may be the result of selection for improved camouflage in its new arboreal niche, while selection pressures for other morphological changes have probably been weak owing to preadaptations for the novel niche. By contrast, we suggest thatAmaurocichla's niche change has led to divergence in both structure and plumage.

  • 40.
    Alström, Per
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Swedish Univ Agr Sci SLU, Swedish Species Informat Ctr, Box 7007, S-75007 Uppsala, Sweden; Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Rasmussen, Pamela C.
    Michigan State Univ, Dept Integrat Biol, E Lansing, MI 48864 USA;Michigan State Univ, MSU Museum, E Lansing, MI 48864 USA;Nat Hist Museum Tring, Bird Grp, Akeman St, Tring HP23 6AP, England.
    Xia, Canwei
    Beijing Normal Univ, Minist Educ, Coll Life Sci, Key Lab Biodivers & Ecol Engn, Beijing 100875, Peoples R China.
    Gelang, Magnus
    Gothenburg Nat Hist Museum, Box 7283, S-40235 Gothenburg, Sweden.
    Liu, Yang
    Sun Yat Sen Univ, Sch Life Sci, Dept Ecol, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China.
    Chen, Guoling
    Sun Yat Sen Univ, Sch Life Sci, Dept Ecol, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China.
    Zhao, Min
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
    Hao, Yan
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
    Zhao, Chao
    Cloud Mt Conservat, Dali 671003, Yunnan, Peoples R China.
    Zhao, Jian
    Sun Yat Sen Univ, Sch Life Sci, Dept Ecol, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China.
    Yao, Chengte
    COA, Endem Species Res Inst, High Altitude Expt Stn, Chi Chi 55244, Taiwan.
    Eaton, James A.
    Birdtour Asia, 17 Keats Ave, Derby DE23 4EE, England.
    Hutchinson, Robert
    Birdtour Asia, 17 Keats Ave, Derby DE23 4EE, England.
    Lei, Fumin
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Olsson, Urban
    Univ Gothenburg, Dept Biol & Environm Sci, Systemat & Biodivers, Box 463, S-40530 Gothenburg, Sweden.
    Taxonomy of the White-browed Shortwing (Brachypteryx montana) complex on mainland Asia and Taiwan: an integrative approach supports recognition of three instead of one species2018Inngår i: Avian Research, ISSN 0005-2175, E-ISSN 2053-7166, Vol. 9, artikkel-id 34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: The White-browed Shortwing (Brachypteryx montana) is widespread from the central Himalayas to the southeast Chinese mainland and the island of Taiwan, the Philippines and Indonesia. Multiple subspecies are recognised, and several of these have recently been suggested to be treated as separate species based on differences in morphology and songs.

    Methods: We here analyse plumage, morphometrics, songs, two mitochondrial and two nuclear markers, and geographical distributions of the two mainland Asian taxa B. m. cruralis and B. m. sinensis and the Taiwanese B. m. goodfellowi.

    Results: We conclude that these differ congruently in morphology, songs and DNA. Male B. m. goodfellowi is the most divergent in plumage (sexually monomorphic, unlike the two others; male similar to female), and B. m. cruralis and B. m. sinensis differ in male plumage maturation. The song of B. m. cruralis is strongly divergent from the others, whereas the songs of B. m. sinensis and B. m. goodfellowi are more similar to each other. Brachypteryx m. sinensis and B. m. goodfellowi are sisters, with an estimated divergence time 4.1 million years ago (mya; 95% highest posterior distribution [HPD] 2.8-5.5mya), and B. m. cruralis separated from these two 5.8mya (95% HPD 4.1-7.5mya). We also report notable range extensions of B. m. sinensis as well as sympatry between this taxon and B. m. cruralis in Sichuan Province, China. Brachypteryx m. montana from Java is found to be more closely related to Lesser Shortwing (B. leucophris) and Rusty-bellied Shortwing (B. hyperythra) than to the mainland Asian and Taiwanese taxa.

    Conclusion: Our data support a recent proposal to treat the three mainland Asian and Taiwanese taxa as three species, separate from B. montana sensu stricto: B. cruralis (central Himalayas to south central China and south Vietnam), B. sinensis (north central to southeastern part of mainland China) and B. goodfellowi (Taiwan Island).

  • 41.
    Alström, Per
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.; Swedish Univ Agr Sci, Swedish Species Informat Ctr, Box 7007, S-75007 Uppsala, Sweden.
    Rasmussen, Pamela C
    Michigan State Univ, Dept Integrat Biol, E Lansing, MI 48864 USA.; Michigan State Univ, MSU Museum, E Lansing, MI 48864 USA.; Nat Hist Museum Tring, Bird Grp, Akeman St, Tring HP23 6AP, England.
    Zhao, Chao
    Cloud Mt Conservat, Dali 671003, Peoples R China.
    Xu, Jingzi
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
    Dalvi, Shashank
    GKVK, Natl Ctr Biol Sci, Researchers Wildlife Conservat, F-21,Bellary Rd, Bengaluru 560065, Karnataka, India.
    Cai, Tianlong
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.; Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China.
    Guan, Yuyan
    Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China.; Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China.
    Zhang, Ruiying
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Kalyakin, Mikhail V.
    Lomonosov Moscow State Univ, Zool Museum, Bolshaya Nikitskaya Str 2, Moscow 125009, Russia.
    Lei, Fumin
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Olsson, Urban
    Univ Gothenburg, Dept Biol & Environm Sci, Systemat & Biodivers, Box 463, S-40530 Gothenburg, Sweden.
    Integrative taxonomy of the Plain-backed Thrush (Zoothera mollissima) complex (Aves, Turdidae) reveals cryptic species, including a new species2016Inngår i: Avian Research, ISSN 0005-2175, E-ISSN 2053-7166, Vol. 7, artikkel-id 1Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: The Plain-backed Thrush Zoothera mollissima breeds in the Himalayas and mountains of central China. It was long considered conspecific with the Long-tailed Thrush Zoothera dixoni, until these were shown to be broadly sympatric.

    Methods: We revise the Z. mollissimaZ. dixoni complex by integrating morphological, acoustic, genetic (two mitochondrial and two nuclear markers), ecological and distributional datasets.

    Results: In earlier field observations, we noted two very different song types of “Plain-backed” Thrush segregated by breeding habitat and elevation. Further integrative analyses congruently identify three groups: an alpine breeder in the Himalayas and Sichuan, China (“Alpine Thrush”); a forest breeder in the eastern Himalayas and northwest Yunnan (at least), China (“Himalayan Forest Thrush”); and a forest breeder in central Sichuan (“Sichuan Forest Thrush”). Alpine and Himalayan Forest Thrushes are broadly sympatric, but segregated by habitat and altitude, and the same is probably true also for Alpine and Sichuan Forest Thrushes. These three groups differ markedly in morphology and songs. In addition, DNA sequence data from three non-breeding specimens from Yunnan indicate that yet another lineage exists (“Yunnan Thrush”). However, we find no consistent morphological differences from Alpine Thrush, and its breeding range is unknown. Molecular phylogenetic analyses suggest that all four groups diverged at least a few million years ago, and identify Alpine Thrush and the putative “Yunnan Thrush” as sisters, and the two forest taxa as sisters. Cytochrome b divergences among the four Z. mollissima sensu lato (s.l.) clades are similar to those between any of them and Z. dixoni, and exceed that between the two congeneric outgroup species. We lectotypify the name Oreocincla rostrata Hodgson, 1845 with the Z. mollissima sensu stricto (s.s.) specimen long considered its type. No available name unambiguously pertains to the Himalayan Forest Thrush.

    Conclusions: The Plain-backed Thrush Z. mollissima s.l. comprises at least three species: Alpine Thrush Z. mollissima s.s., with a widespread alpine breeding distribution; Sichuan Forest Thrush Z. griseiceps, breeding in central Sichuan forests; and Himalayan Forest Thrush, breeding in the eastern Himalayas and northwest Yunnan (at least), which is described herein as a new species. “Yunnan Thrush” requires further study.

  • 42.
    Alström, Per
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi. Swedish Univ Agr Sci SLU, Swedish Species Informat Ctr, Box 7007, SE-75007 Uppsala, Sweden;Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Rheindt, Frank E.
    Natl Univ Singapore, Dept Biol Sci, 16 Sci Dr 4, Singapore 117558, Singapore.
    Zhang, Ruiying
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Zhao, Min
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Wang, Jing
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Zhu, Xiaojia
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Gwee, Chyi Yin
    Natl Univ Singapore, Dept Biol Sci, 16 Sci Dr 4, Singapore 117558, Singapore.
    Hao, Yan
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Ohlson, Jan
    Swedish Museum Nat Hist, Dept Bioinformat & Genet, Box 50007, SE-10405 Stockholm, Sweden.
    Jia, Chenxi
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Prawiradilaga, Dewi M.
    Indonesian Inst Sci LIPI, Cibinong Sci Ctr, Res Ctr Biol, Jalan Raya Jakarta Bogor KM 46, Bogor 16911, Indonesia.
    Ericson, Per G. P.
    Swedish Museum Nat Hist, Dept Bioinformat & Genet, Box 50007, SE-10405 Stockholm, Sweden.
    Lei, Fumin
    Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China.
    Olsson, Urban
    Univ Gothenburg, Dept Biol & Environm Sci, Box 463, SE-40530 Gothenburg, Sweden.
    Complete species-level phylogeny of the leaf warbler (Aves: Phylloscopidae) radiation2018Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 126, s. 141-152Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The leaf warbler radiation (Aves: Phylloscopidae) has undergone a c. 50% increase in the number of recognised species over the last three decades, mainly as a result of analyses of vocalisations and DNA. Using a multilocus dataset for all of the species in this family, and multispecies coalescent-based as well as concatenation methods, we provide the first complete species-level phylogeny for this important group, as well as an estimate of the timing of diversification. The most recent common ancestor for the family was dated at 11.7 million years ago (mya) (95% highest posterior density 9.8-13.7 mya), and divergence times between sister species ranged from 0.5 mya (0.3-0.8 mya) to 6.1 mya (4.8-7.5 mya). Based on our results, we support synonymising Seicercus with Phylloscopus, which results in a monogeneric Phylloscopidae. We discuss the pros and cons of this treatment, and we argue against proliferation of taxonomic names, and conclude that a large monogeneric Phylloscopidae leads to the fewest taxonomic changes compared to traditional classifications. We briefly discuss morphological evolution in the light of the phylogeny. The time calibrated phylogeny is a major improvement compared to previous studies based on a smaller number of species and loci and can provide a basis for future studies of other aspects of phylloscopid evolution.

  • 43.
    Amcoff, Mirjam
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Fishing for Females: Sensory Exploitation in the Swordtail Characin2013Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Mate choice plays an important role in sexual selection and speciation. The evolution of mate choice is intriguing in cases where choosy individuals gain little except for genetic material from the mate and where the trait used as a criterion for the choice is costly to its bearer. The sensory exploitation hypothesis is an interesting idea that applies to such cases because it suggests that sexual preferences may arise as side-effects of preferences that are under selection in other contexts. The role of mate choice in speciation is strong but is debated because the reasons for population divergence in mate preferences and sexual traits are sometimes hard to explain. Also in this context sensory exploitation offers a potential explanation in that a link between natural and sexual selection may result in divergence in sexual selection whenever populations differ in natural selection.

    In this thesis, I test several aspects of this hypothesis in a species of fish, the swordtail characin (Corynopoma riisei). In this species males display a flag-like ornament that grows from the operculum. Because females respond to this ornament by biting at it, it has been proposed to act as a food-mimic. By manipulating female food type and quantity, and testing the resulting female preference for the male ornament, I find support for the theory that the preference has evolved through sensory exploitation and that females indeed appear to relate the ornament to a food item. Furthermore, I show that sensory exploitation can lead to morphological divergence among natural populations in this species. Apart from the flag-ornament, other courtship signals are also investigated. The results show that the relative importance of different signals may vary depending on receiver motivation. This suggests that various aspects of both male courtship signals and the conditions during which they are being signalled should be considered to gain a full understanding of mate choice and its role in sexual selection and speciation.

    Delarbeid
    1. Does female feeding motivation affect the response to a food-mimicking male ornament in the swordtail characin Corynopoma riisei?
    Åpne denne publikasjonen i ny fane eller vindu >>Does female feeding motivation affect the response to a food-mimicking male ornament in the swordtail characin Corynopoma riisei?
    2013 (engelsk)Inngår i: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 83, nr 2, s. 343-354Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Female response to various aspects of male trait morphology and the effect of female feeding motivation were investigated in the swordtail characin Corynopoma riisei, a species where males are equipped with a flag-like food-mimicking ornament that grows from the operculum. Unfed females responded more strongly to the male ornament and showed a stronger preference for larger ornaments than did fed females. Females were shown not to discriminate between artificial male ornaments of either undamaged or damaged shape.

    Emneord
    diet, mate preference, plasticity, sensory exploitation, signalling
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-206572 (URN)10.1111/jfb.12175 (DOI)000322547900007 ()
    Tilgjengelig fra: 2013-09-02 Laget: 2013-09-02 Sist oppdatert: 2017-12-06bibliografisk kontrollert
    2. Sensory exploitation and plasticity in female mate choice in the swordtail characin
    Åpne denne publikasjonen i ny fane eller vindu >>Sensory exploitation and plasticity in female mate choice in the swordtail characin
    2013 (engelsk)Inngår i: Animal Behaviour, ISSN 0003-3472, E-ISSN 1095-8282, Vol. 85, nr 5, s. 891-898Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Despite extensive research in the field of sexual selection, the evolutionary origin and maintenance of preferences for sexual ornaments are still debated. Recent studies have pointed out that plasticity in mate choice might be more common than previously thought, but little is still known about the factors that affect such plasticity. The swordtail characin, Corynopoma riisei, is a tropical fish species in which males use a food-mimicking ornament to attract females. We tested whether ecological factors, more specifically prior foraging experience, can affect female preference for male ornaments. For this, we habituated females on a diet consisting of either red-coloured food or standard-coloured green food items and then we tested whether female preferences for artificially red-coloured male ornaments matched their previous foraging experience. We found a strong effect of food treatment: females trained on red food showed a stronger response to males with red-coloured ornaments than females trained on green food. Our results show that ecological variation can generate divergence of female preferences for male ornaments and that the response in preference to environmental change can be rapid if the bias is partly learnt.

    Emneord
    Corynopoma riisei, diet, mate choice, sensory exploitation, sexual selection, swordtail characin
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-203305 (URN)10.1016/j.anbehav.2013.02.001 (DOI)000319332000004 ()
    Tilgjengelig fra: 2013-07-08 Laget: 2013-07-08 Sist oppdatert: 2017-12-06bibliografisk kontrollert
    3. Diversification of a Food-Mimicking Male Ornament via Sensory Drive
    Åpne denne publikasjonen i ny fane eller vindu >>Diversification of a Food-Mimicking Male Ornament via Sensory Drive
    2012 (engelsk)Inngår i: Current Biology, ISSN 0960-9822, E-ISSN 1879-0445, Vol. 22, nr 15, s. 1440-1443Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    The evolutionary divergence of sexual signals is often important during the formation of new animal species, but our understanding of the origin of signal diversity is limited [1, 2]. Sensory drive, the optimization of communication signal efficiency through matching to the local environment, has been highlighted as a potential promoter of diversification and speciation [3]. The swordtail characin (Corynopoma riisei) is a tropical fish in which males display a flag-like ornament that elicits female foraging behavior during courtship. We show that the shape of the male ornament covaries with female diet across natural populations. More specifically, natural populations in which the female diet is more dominated by ants exhibit male ornaments more similar to the shape of an ant. Feeding experiments confirm that females habituated to a diet of ants prefer to bite at male ornaments from populations with a diet more dominated by ants. Our results show that the male ornament functions as a "fishing lure" that is diversifying in shape to match local variation in female search images employed during foraging. This direct link between variation in female feeding ecology and the evolutionary diversification of male sexual ornaments suggests that sensory drive may be a common engine of signal divergence.

    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-181121 (URN)10.1016/j.cub.2012.05.050 (DOI)000307415000026 ()
    Tilgjengelig fra: 2012-09-19 Laget: 2012-09-17 Sist oppdatert: 2017-12-07bibliografisk kontrollert
    4. Courtship signalling with a labile bilateral signal: males show their best side
    Åpne denne publikasjonen i ny fane eller vindu >>Courtship signalling with a labile bilateral signal: males show their best side
    2009 (engelsk)Inngår i: Behavioral Ecology and Sociobiology, ISSN 0340-5443, E-ISSN 1432-0762, Vol. 63, nr 12, s. 1717-1725Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Asymmetries in courtship signals can result from both developmental instability during ontogeny and from temporary or permanent damage following mating, fighting, or interactions with predators. These two types of asymmetries, which can be divided into fluctuating asymmetry (FA) and damage asymmetry (DA), have both been suggested to play an important role in mate choice as potential honest indicators of phenotypic and/or genetic quality, while at the same time, DA may affect ornament asymmetry in a random manner. Interestingly, despite the massive research effort that has been devoted to the study of asymmetry during the past decades, very little is known about how an individual's behaviour relates to asymmetry. Here, we measure and characterise asymmetry in morphological courtship signals in Corynopoma riisei, a fish where males carry elaborate paddle-like appendices on each side of the body that they display in front of females during courtship. Moreover, we investigate whether male courtship display, employing this bilateral morphological trait, reflects trait asymmetry. Finally, we assess whether males respond to phenotypic manipulations of DA with corresponding changes in courtship behaviour. We show that male display behaviour is asymmetric in a manner that reflects asymmetry of their morphological courtship trait and that male display behaviour responds to manipulations of asymmetry of these paddles. Our results thus suggest that males preferentially use their best side and, hence, that males respond adaptively to temporary changes in signal trait asymmetry.

    Emneord
    Sexual signalling, Sexual selection, Lateralization, Mate choice, Sensory bias, Indicator, Self-awareness
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-127482 (URN)10.1007/s00265-009-0785-7 (DOI)000270684200003 ()
    Tilgjengelig fra: 2010-07-15 Laget: 2010-07-13 Sist oppdatert: 2017-12-12bibliografisk kontrollert
    5. Multiple male sexual signals and female responsiveness in the swordtail characin, Corynopoma riisei
    Åpne denne publikasjonen i ny fane eller vindu >>Multiple male sexual signals and female responsiveness in the swordtail characin, Corynopoma riisei
    2015 (engelsk)Inngår i: Environmental Biology of Fishes, ISSN 0378-1909, E-ISSN 1573-5133, Vol. 98, nr 7, s. 1731-1740Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    In the courtship process, multiple signals are often used between the signaller and the receiver. Here we describe female response to multiple male visual morphological and behavioural signals in the swordtail characin, Corynopoma riisei. The swordtail characin is a species in which males display several morphological ornaments as well as a rich courtship repertoire. Our results show that high courtship intensity was associated with an increased female response towards the male ornament, increased number of mating attempts and a reduction in female aggression. The morphological aspects investigated here did not seem to correlate with female response. This may indicate that, when both behaviour and morphology are considered simultaneously, courtship behaviour may have priority over morphological cues in this species.

    Emneord
    courtship, multiple signalling, visual cues, morphology, mate choice
    HSV kategori
    Forskningsprogram
    Biologi med inriktning mot zooekologi
    Identifikatorer
    urn:nbn:se:uu:diva-207333 (URN)10.1007/s10641-015-0388-2 (DOI)000355620700001 ()
    Tilgjengelig fra: 2013-09-12 Laget: 2013-09-12 Sist oppdatert: 2017-12-06bibliografisk kontrollert
  • 44.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Arnqvist, Göran
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Courtship signalling with a labile bilateral signal: males show their best side2009Inngår i: Behavioral Ecology and Sociobiology, ISSN 0340-5443, E-ISSN 1432-0762, Vol. 63, nr 12, s. 1717-1725Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Asymmetries in courtship signals can result from both developmental instability during ontogeny and from temporary or permanent damage following mating, fighting, or interactions with predators. These two types of asymmetries, which can be divided into fluctuating asymmetry (FA) and damage asymmetry (DA), have both been suggested to play an important role in mate choice as potential honest indicators of phenotypic and/or genetic quality, while at the same time, DA may affect ornament asymmetry in a random manner. Interestingly, despite the massive research effort that has been devoted to the study of asymmetry during the past decades, very little is known about how an individual's behaviour relates to asymmetry. Here, we measure and characterise asymmetry in morphological courtship signals in Corynopoma riisei, a fish where males carry elaborate paddle-like appendices on each side of the body that they display in front of females during courtship. Moreover, we investigate whether male courtship display, employing this bilateral morphological trait, reflects trait asymmetry. Finally, we assess whether males respond to phenotypic manipulations of DA with corresponding changes in courtship behaviour. We show that male display behaviour is asymmetric in a manner that reflects asymmetry of their morphological courtship trait and that male display behaviour responds to manipulations of asymmetry of these paddles. Our results thus suggest that males preferentially use their best side and, hence, that males respond adaptively to temporary changes in signal trait asymmetry.

  • 45.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Gonzalez-Voyer, A.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Evolution of egg dummies in Tanganyikan cichlid fishes: the roles of parental care and sexual selection2013Inngår i: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 26, nr 11, s. 2369-2382Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Sexual selection has been suggested to be an important driver of speciation in cichlid fishes of the Great Lakes of Africa, and the presence of male egg dummies is proposed to have played a key role. Here, we investigate how mouthbrooding and egg dummies have evolved in Tanganyikan cichlids, the lineage which seeded the other African radiations, with a special emphasis on the egg dummies. Using modern phylogenetic comparative analyses and a phylogeny including 86% of the 200 described species, we provide formal evidence demonstrating correlated evolution between mouthbrooding and egg dummies in Tanganyikan cichlids. These results concur with existing evidence, suggesting that egg dummies have evolved through sensory exploitation. We also demonstrate that there is a strong evolutionary correlation between the presence of egg dummies and both pre- and post-copulatory sexual selection. Moreover, egg dummy evolution was contingent on the intensity of pre- and post-copulatory sexual selection in Tanganyikan cichlids. In sum, our results provide evidence supporting the hypothesis of egg dummies evolving through sensory exploitation and highlight the role of sexual selection in favouring the evolution and maintenance of this trait.

  • 46.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Hallsson, Lara R.
    Winberg, Svante
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Fysiologi.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Male Courtship Pheromones Affect Female Behaviour in the Swordtail Characin ( Corynopoma riisei)2014Inngår i: Ethology, ISSN 0179-1613, E-ISSN 1439-0310, Vol. 120, nr 5, s. 463-470Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Pheromones constitute an important cue used by both males and females during courtship. Here, we investigate the effect of male pheromones on female behaviour in the swordtail characin (Corynopoma riisei), a species of fish where males have a caudal pheromone gland which has been suggested to affect female behaviour during courtship. We subjected female C.riisei to male courtship pheromones and investigated the effect on both female behaviour and brain serotonergic activity levels compared to a control group. While no difference in serotonergic activity was found, the pheromone-treated females showed lower stress levels compared to the control group. Furthermore, pheromone-treated females increased locomotor activity over time, while a decrease in locomotor activity was observed in the control group. These results suggest that the male courtship pheromones may serve to reduce female stress and increase female activity, possibly to aid males in gaining access to females and facilitating sperm transfer.

  • 47.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    A test of sensory exploitation in the swordtail characin (Corynopoma riisei) based on colour matchingbetween female prey and a male ornament2014Inngår i: Environmental Biology of Fishes, ISSN 0378-1909, E-ISSN 1573-5133, Vol. 97, nr 3, s. 247-254Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The sensory exploitation hypothesis states that pre-existing biases in female sensory systems may generate strong selection on male signals to match such biases. As environmental conditions differ between populations, sexual preferences resulting from natural selection are expected to vary as well. The swordtail characin (Corynopoma riisei) is a species in which males carry a flag-like ornament growing from the operculum that has been proposed to function as a prey mimic to attract females. Here, we investigated if female plasticity in feeding preferences is associated with plasticity in preference for an artificial male ornament in this species. Females were trained for 10 days by offering them differently coloured food items and were then tested for changes in preferences for differently coloured artificial male ornaments according to foraging experience. We found a rapid and pronounced change in female preference for the colouration of the artificial ornament according to food training. Thus our results support the possibility that sensory exploitation may act as a driving force for female preferences for male ornaments in this species.

  • 48.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Does female feeding motivation affect the response to a food-mimicking male ornament in the swordtail characin Corynopoma riisei?2013Inngår i: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 83, nr 2, s. 343-354Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Female response to various aspects of male trait morphology and the effect of female feeding motivation were investigated in the swordtail characin Corynopoma riisei, a species where males are equipped with a flag-like food-mimicking ornament that grows from the operculum. Unfed females responded more strongly to the male ornament and showed a stronger preference for larger ornaments than did fed females. Females were shown not to discriminate between artificial male ornaments of either undamaged or damaged shape.

  • 49.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Kolm, Niclas
    Multiple male sexual signals and female responsiveness in the swordtail characin, Corynopoma riisei2015Inngår i: Environmental Biology of Fishes, ISSN 0378-1909, E-ISSN 1573-5133, Vol. 98, nr 7, s. 1731-1740Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In the courtship process, multiple signals are often used between the signaller and the receiver. Here we describe female response to multiple male visual morphological and behavioural signals in the swordtail characin, Corynopoma riisei. The swordtail characin is a species in which males display several morphological ornaments as well as a rich courtship repertoire. Our results show that high courtship intensity was associated with an increased female response towards the male ornament, increased number of mating attempts and a reduction in female aggression. The morphological aspects investigated here did not seem to correlate with female response. This may indicate that, when both behaviour and morphology are considered simultaneously, courtship behaviour may have priority over morphological cues in this species.

  • 50.
    Amcoff, Mirjam
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Lindqvist, Charlotte
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Kolm, Niclas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
    Sensory exploitation and plasticity in female mate choice in the swordtail characin2013Inngår i: Animal Behaviour, ISSN 0003-3472, E-ISSN 1095-8282, Vol. 85, nr 5, s. 891-898Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Despite extensive research in the field of sexual selection, the evolutionary origin and maintenance of preferences for sexual ornaments are still debated. Recent studies have pointed out that plasticity in mate choice might be more common than previously thought, but little is still known about the factors that affect such plasticity. The swordtail characin, Corynopoma riisei, is a tropical fish species in which males use a food-mimicking ornament to attract females. We tested whether ecological factors, more specifically prior foraging experience, can affect female preference for male ornaments. For this, we habituated females on a diet consisting of either red-coloured food or standard-coloured green food items and then we tested whether female preferences for artificially red-coloured male ornaments matched their previous foraging experience. We found a strong effect of food treatment: females trained on red food showed a stronger response to males with red-coloured ornaments than females trained on green food. Our results show that ecological variation can generate divergence of female preferences for male ornaments and that the response in preference to environmental change can be rapid if the bias is partly learnt.

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