Publication
Social modulation of sex steroid concentrations in the urine of male cichlid fish Oreochromis mossambicus
| dc.contributor.author | Oliveira, R. F. | |
| dc.contributor.author | Almada, V. C. | |
| dc.contributor.author | Canario, Adelino V. M. | |
| dc.date.accessioned | 2013-12-03T14:36:26Z | |
| dc.date.available | 2013-12-03T14:36:26Z | |
| dc.date.issued | 1996 | |
| dc.date.updated | 2013-11-29T15:44:20Z | |
| dc.description.abstract | The relationship between urinary concentrations (free + sulfates + glucuronides) of the steroids testosterone (T), 11-ketotestosterone (11KT), 17α, 20ß-dihydroxy-4-preg- nen-3-one (17,20ß-P) and 17a,20a-dihydroxy-4-preg- nen-3-one (17,20α-P), and the social behavior of males of the cichlid fish Oreochromis mossambicus was inves- tigated. After 8 days of isolation none of the steroids were good predictors of social dominance developed after subsequent formation of all-male groups. One day after group formation dominance indexes were good predictors of the urine concentrations of all sex steroids. Dominance indexes and androgen concentrations mea- sured after all-male group formation were positively cor- related with territoriality, courtship rate, and nest size. Similar relationships were found for progestins with the exception that they were not correlated with courtship rate. All-male group formation was also accompanied by an increase in urinary sex steroid concentrations in fish that became territorial and a decrease in non-territorial fish with the exception of T, which increased in both groups. Addition of ovulating females caused steroid concentrations to return to levels near isolation, except for 17,20α-P in territorials, which underwent a large in- crease. Thus, social interactions may have an important modulatory effect on sex steroid concentrations in O. mossambicus. | por |
| dc.identifier.citation | Oliveira, R. F.; Almada, V. C.; Canario, A. V. M. Social modulation of sex steroid concentrations in the urine of male cichlid fish Oreochromis mossambicus, Hormones and Behavior, 30, 1, 2-12, 1996. | por |
| dc.identifier.other | AUT: ACA00258; | |
| dc.identifier.uri | http://hdl.handle.net/10400.1/3206 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Elsevier | |
| dc.relation.publisherversion | http://www.journals.elsevier.com/hormones-and-behavior/ | por |
| dc.title | Social modulation of sex steroid concentrations in the urine of male cichlid fish Oreochromis mossambicus | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 12 | por |
| oaire.citation.issue | 1 | por |
| oaire.citation.startPage | 2 | por |
| oaire.citation.title | Hormones and Behavior | por |
| oaire.citation.volume | 30 | por |
| person.familyName | Canario | |
| person.givenName | Adelino | |
| person.identifier | 143624 | |
| person.identifier.ciencia-id | 1F1E-D3B3-F804 | |
| person.identifier.orcid | 0000-0002-6244-6468 | |
| person.identifier.rid | C-7942-2009 | |
| person.identifier.scopus-author-id | 56568523700 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 5f6e51ee-9113-469e-8b9e-f30f2d452521 | |
| relation.isAuthorOfPublication.latestForDiscovery | 5f6e51ee-9113-469e-8b9e-f30f2d452521 |