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Androgen response to social competition in a shoaling fish

2016-02Journal article Restricted access
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dc.contributor.authorTeles, Magda
dc.contributor.authorOliveira, Rui Filipe
dc.date.accessioned2016-02-20T17:00:36Z
dc.date.available2016-02-20T17:00:36Z
dc.date.issued2016-02
dc.description.abstractAndrogens respond to social challenges and this response has been interpreted as a way for males to adjust androgen-dependent behavior to social context. However, the androgen responsiveness to social challenges varies across species and a conceptual framework has been developed to explain this variation according to differences in the mating system and parental care type, which determines the regimen of challenges males are exposed to, and concomitantly the scope (defined as the difference between the physiological maximum and the baseline levels) of response to a social challenge. However, this framework has been focused on territorial species and no clear predictions have been made to gregarious species (e.g. shoaling fish), which although tolerating same-sex individuals may also exhibit intra-sexual competition. In this paper we extend the scope of this conceptual framework to shoaling fish by studying the endocrine response of zebrafish (Danio rerio) to social challenges. Male zebrafish exposed to real opponent agonistic interactions exhibited an increase in androgen levels (11-ketotestosterone both in Winners and Losers and testosterone in Losers). This response was absent in Mirror-fighters, that expressed similar levels of aggressive behavior to those of winners, suggesting that this response is not a mere reflex of heightened aggressive motivation. Cortisol levels were also measured and indicated an activation of the hypothalamic-pituitary-interrenal axis in Winners of real opponent fighters, but not Losers or in Mirror-fighters. These results confirm that gregarious species also exhibit an endocrine response to an acute social challenge.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT)pt_PT
dc.identifier.citationHormones and Behaviour, 78, 8-12. doi: 10.1016/j.yhbeh.2015.10.009pt_PT
dc.identifier.doi10.1016/j.yhbeh.2015.10.009pt_PT
dc.identifier.issn0018-506X
dc.identifier.urihttp://hdl.handle.net/10400.12/4366
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMolecular mechanisms and evolutionary implications of social plasticity
dc.relationSOCIAL MODULATION OF ADULT NEUROGENESIS IN FISH
dc.subjectChallenge hypothesispt_PT
dc.subjectAndrogenspt_PT
dc.subject11-ketotestosteronept_PT
dc.subjectTestosteronept_PT
dc.subjectCortisolpt_PT
dc.subjectZebrafishpt_PT
dc.titleAndrogen response to social competition in a shoaling fishpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMolecular mechanisms and evolutionary implications of social plasticity
oaire.awardTitleSOCIAL MODULATION OF ADULT NEUROGENESIS IN FISH
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXCL%2FBIA-ANM%2F0549%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/PIDDAC/SFRH%2FBD%2F44848%2F2008/PT
oaire.citation.conferencePlaceSan Diegopt_PT
oaire.citation.endPage12pt_PT
oaire.citation.startPage8pt_PT
oaire.citation.titleHormones and Behaviourpt_PT
oaire.citation.volume78pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamPIDDAC
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublicationafaa070b-4377-4c8f-ad3c-bb09af3102e9
relation.isProjectOfPublication69570d27-a28b-4d25-a3b1-3b03d2afb26e
relation.isProjectOfPublication.latestForDiscovery69570d27-a28b-4d25-a3b1-3b03d2afb26e

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