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  • 1.
    Mustafa, Arshi
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Winberg: Behavioral Neuroendocrinology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology.
    Thörnqvist, Per-Ove
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Winberg: Behavioral Neuroendocrinology.
    Roman, Erika
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences.
    Winberg, Svante
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Winberg: Behavioral Neuroendocrinology.
    The aggressive spiegeldanio, carrying a mutation in the fgfr1a gene, has no advantage in dyadic fights with zebrafish of the AB strain2019In: Behavioural Brain Research, ISSN 0166-4328, E-ISSN 1872-7549, Vol. 370, article id 111942Article in journal (Refereed)
    Abstract [en]

    Zebrafish which carries a mutation in the fibroblast growth factor receptor 1A (fgfr1a), also known as spiegeldanio (spd), has previously been reported to be bolder and more aggressive than wildtype (AB) zebrafish. However, in previous studies aggression has been quantified in mirror tests. In dyadic fights the behavior of the combatants is modified by the behavior of their opponent, and fighting a mirror has been reported to have different effects on brain gene expression and brain monoaminergic systems. In the present study aggression was quantified in fgfr1a mutants and AB zebrafish using a mirror test after which the fish were allowed to interact in pairs, either consisting of two fgfr1a mutants or one AB and one fgfr1a mutant fish. Following dyadic interaction aggressive behavior was again quantified in individual fish in a second mirror test after which the fish were sacrificed and brain tissue analyzed for monoamines and monoamine metabolites. The results confirm that fgfr1a mutants are more aggressive than AB zebrafish in mirror tests. However, fgfr1a mutant fish did not have any advantage in fights for social dominance, and agonistic behavior of fgfr1a mutants did not differ from that of AB fish during dyadic interactions. Moreover, as the AB fish, fgfr1a mutant fish losing dyadic interactions showed a typical loser effect and social subordination resulted in an activation of the brain serotonergic system in fgfr1a mutants as well as in AB fish. Overall the effects of dyadic interaction were similar in fgfr1a mutant fish and zebrafish of the AB strain.

  • 2.
    Paula, Jose Ricardo
    et al.
    Univ Lisbon, MARE Marine & Environm Sci Ctr, Lab Maritimo da Guia, Fac Ciencias, Av Nossa Senhora do Cabo 939, P-2750374 Cascais, Portugal.
    Repolho, Tiago
    Univ Lisbon, MARE Marine & Environm Sci Ctr, Lab Maritimo da Guia, Fac Ciencias, Av Nossa Senhora do Cabo 939, P-2750374 Cascais, Portugal.
    Pegado, Maria Rita
    Univ Lisbon, MARE Marine & Environm Sci Ctr, Lab Maritimo da Guia, Fac Ciencias, Av Nossa Senhora do Cabo 939, P-2750374 Cascais, Portugal.
    Thörnqvist, Per-Ove
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Winberg: Behavioral Neuroendocrinology.
    Bispo, Regina
    Univ Nova Lisboa, Dept Matemat, Ctr Matemat & Aplicacoes, Fac Ciencias & Tecnol, Campus Caparica, P-2829516 Caparica, Portugal.
    Winberg, Svante
    Univ Lisbon, MARE Marine & Environm Sci Ctr, Lab Maritimo da Guia, Fac Ciencias, Av Nossa Senhora do Cabo 939, P-2750374 Cascais, Portugal.
    Munday, Philip L.
    James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia.
    Rosa, Rui
    Univ Lisbon, MARE Marine & Environm Sci Ctr, Lab Maritimo da Guia, Fac Ciencias, Av Nossa Senhora do Cabo 939, P-2750374 Cascais, Portugal.
    Neurobiological and behavioural responses of cleaning mutualisms to ocean warming and acidification2019In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, article id 12728Article in journal (Refereed)
    Abstract [en]

    Cleaning interactions are textbook examples of mutualisms. On coral reefs, most fishes engage in cooperative interactions with cleaners fishes, where they benefit from ectoparasite reduction and ultimately stress relief. Furthermore, such interactions elicit beneficial effects on clients' ecophysiology. However, the potential effects of future ocean warming (OW) and acidification (OA) on these charismatic associations are unknown. Here we show that a 45-day acclimation period to OW (+3 degrees C) and OA (980 mu atm pCO(2)) decreased interactions between cleaner wrasses (Labroides dimidiatus) and clients (Naso elegans). Cleaners also invested more in the interactions by providing tactile stimulation under OA. Although this form of investment is typically used by cleaners to prolong interactions and reconcile after cheating, interaction time and client jolt rate (a correlate of dishonesty) were not affected by any stressor. In both partners, the dopaminergic (in all brain regions) and serotoninergic (forebrain) systems were significantly altered by these stressors. On the other hand, in cleaners, the interaction with warming ameliorated dopaminergic and serotonergic responses to OA. Dopamine and serotonin correlated positively with motivation to interact and cleaners interaction investment (tactile stimulation). We advocate that such neurobiological changes associated with cleaning behaviour may affect the maintenance of community structures on coral reefs.

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