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Sex in murky waters: algal induced turbidity increases sexual selection in pipefish
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiology.
Norwegian Univ Sci & Technol, Dept Biol, Ctr Biodivers Dynam, Trondheim, Norway.; Norwegian Inst Nat Res NINA, Trondheim, Norway.
Norwegian Univ Sci & Technol, Dept Biol, Ctr Biodivers Dynam, Trondheim, Norway.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
2017 (English)In: Behavioral Ecology and Sociobiology, ISSN 0340-5443, E-ISSN 1432-0762, Vol. 71, no 5, 78Article in journal (Refereed) Published
Abstract [en]

Algal induced turbidity has been shown to alter several important aspects of reproduction and sexual selection. However, while turbidity has been shown to negatively affect reproduction and sexually selected traits in some species, it may instead enhance reproductive success in others, implying that the impact of eutrophication is far more complex than originally believed. In this study, we aimed to provide more insight into these inconsistent findings. We used molecular tools to investigate the impact of algal turbidity on reproductive success and sexual selection on males in controlled laboratory experiments, allowing mate choice, mating competition and mate encounter rates to affect reproduction. As study species we used the broad-nosed pipefish, Syngnathus typhle, a species practicing male pregnancy and where we have previously shown that male mate choice is impaired by turbidity. Here, turbidity instead enhanced sexual selection on male size and mating success as well as reproductive success. Effects from mating competition and mate encounter rates may thus override effects from mate choice based on visual cues, producing an overall stronger sexual selection in turbid waters. Hence, seemingly inconsistent effects of turbidity on sexual selection may depend on which mechanisms of sexual selection that have been under study.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 71, no 5, 78
Keyword [en]
Climate change, Eutrophication, Syngnathidae, Baltic Sea, Sex-role reversal
National Category
Ecology
Research subject
Biology with specialization in Animal Ecology
Identifiers
URN: urn:nbn:se:uu:diva-318896DOI: 10.1007/s00265-017-2310-8ISI: 000401148300002PubMedID: 28450759OAI: oai:DiVA.org:uu-318896DiVA: diva2:1085568
Available from: 2017-03-29 Created: 2017-03-29 Last updated: 2017-06-22Bibliographically approved

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