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Androgen levels and social interactions in breeding males of the peacock blenny

2001Journal article Restricted
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dc.contributor.authorOliveira, R. F.
dc.contributor.authorAlmada, V. C.
dc.contributor.authorGonçalves, E. J.
dc.contributor.authorForsgren, E.
dc.contributor.authorCanario, Adelino V. M.
dc.date.accessioned2014-05-14T12:34:32Z
dc.date.available2014-05-14T12:34:32Z
dc.date.issued2001
dc.date.updated2014-05-09T09:53:22Z
dc.description.abstractNest-holder male Salaria pavo have lower circulating concentrations of 11-ketotestosterone (KT) at the beginning of the breeding season than at its peak. At that peak density of nesting males was higher as were the number of visits of sneaker males to nests and of agonistic interactions between nest-holders and sneaker males. There was no difference between the two dates either in the frequency of male–male interactions or in the frequency of courtship episodes. Thus, higher plasma levels in nest-holders might be explained by a more intense sneaking pressure at the peak of the breeding season. At that peak, nest-holders had higher plasma levels of KT and a higher testosterone (T) to KT metabolization index in the gonads than did floater males. Both nest-holders and floaters had higher levels of KT and T in the testicular gland than in the testis. The levels of both androgens in the testicular gland, but not in the testis, were correlated with circulating concentrations of KT. These results suggest that the testicular gland is the major source of circulating KT in blenniids. Nest-holders had higher metabolization indexes than floaters both in the testis and in the testicular gland, which suggests that nest holding status promotes the conversion of T into KT.por
dc.identifier.citationOliveira, R. F.; Almada, V. C.; Goncalves, E. J.; Forsgren, E.; Canario, A. V. M. Androgen levels and social interactions in breeding males of the peacock blenny, Journal of Fish Biology, 58, 4, 897-908, 2001.por
dc.identifier.doihttp://dx.doi.org/10.1006/jfbi.2000.1501
dc.identifier.issn0022-1112
dc.identifier.otherAUT: ACA00258;
dc.identifier.urihttp://hdl.handle.net/10400.1/3931
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherThe Fisheries Society of the British Islespor
dc.subjectSocial interactionspor
dc.subject11-ketotestosteronepor
dc.subjectChallenge hypothesispor
dc.subjectTeleostspor
dc.subjectAndrogenspor
dc.subjectPaternal carepor
dc.titleAndrogen levels and social interactions in breeding males of the peacock blennypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage908por
oaire.citation.issue4por
oaire.citation.startPage897por
oaire.citation.titleJournal of Fish Biologypor
oaire.citation.volume58por
person.familyNameCanario
person.givenNameAdelino
person.identifier143624
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication.latestForDiscovery5f6e51ee-9113-469e-8b9e-f30f2d452521

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