Social context may affect urinary excretion of 11-ketotestosterone in african cichlids
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.12/1273 |
Resumo: | We previously investigated the androgen responsiveness of males to simulated partner and territory intrusions in five African cichlid species (Neolamprologus pulcher, Lamprologus callipterus, Tropheus moorii, Pseudosimochromis curvifrons, Oreochromis mossambicus; Hirschenhauser et al., 2004). Here we re-analysed data on 11-ketotestosterone (11-KT) levels in holding water to compare the free (presumably from the gills) and conjugated (presumably from urine and faeces) 11-KT fractions. We sampled (i) pre-test baseline control levels from individual males in social isolation and (ii) response levels released after social interactions, either with an ovulating female or a male territory intruder. In four out of five species, conjugated metabolites contributed to the observed total 11-KT responses in water during social context, which was particularly apparent in peak responsive individuals exposed to male intruders. Thus, in water from males sampled in isolation immunoreactive 11-KT seemed to derive both from gills and urine, whereas the urinary 11-KT component apparently increased in the social context, particularly when a male was challenged by a same-sex intruder. These results suggest that (i) the social context may affect urine release patterns of males and (ii) 11- KT data acquired by using fish-holding water may not simply reflect the passive transmission of steroid hormones via the gills. |
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Social context may affect urinary excretion of 11-ketotestosterone in african cichlidsAndrogen responsesConjugated metabolitesNon-invasive methodsGill diffusionSteroid excretionUrineChallengeCichlidWe previously investigated the androgen responsiveness of males to simulated partner and territory intrusions in five African cichlid species (Neolamprologus pulcher, Lamprologus callipterus, Tropheus moorii, Pseudosimochromis curvifrons, Oreochromis mossambicus; Hirschenhauser et al., 2004). Here we re-analysed data on 11-ketotestosterone (11-KT) levels in holding water to compare the free (presumably from the gills) and conjugated (presumably from urine and faeces) 11-KT fractions. We sampled (i) pre-test baseline control levels from individual males in social isolation and (ii) response levels released after social interactions, either with an ovulating female or a male territory intruder. In four out of five species, conjugated metabolites contributed to the observed total 11-KT responses in water during social context, which was particularly apparent in peak responsive individuals exposed to male intruders. Thus, in water from males sampled in isolation immunoreactive 11-KT seemed to derive both from gills and urine, whereas the urinary 11-KT component apparently increased in the social context, particularly when a male was challenged by a same-sex intruder. These results suggest that (i) the social context may affect urine release patterns of males and (ii) 11- KT data acquired by using fish-holding water may not simply reflect the passive transmission of steroid hormones via the gills.BrillRepositório do ISPAHirschenhauser, KatharinaCanário, Adelino V. M.Ros, Albert F. H.Taborsky, MichaelOliveira, Rui Filipe2012-03-17T12:49:54Z2008-01-01T00:00:00Z2008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.12/1273engBehaviour, 145, 1367-13880005-7959info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-05T16:37:22Zoai:repositorio.ispa.pt:10400.12/1273Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:19:22.953677Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
title |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
spellingShingle |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids Hirschenhauser, Katharina Androgen responses Conjugated metabolites Non-invasive methods Gill diffusion Steroid excretion Urine Challenge Cichlid |
title_short |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
title_full |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
title_fullStr |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
title_full_unstemmed |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
title_sort |
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids |
author |
Hirschenhauser, Katharina |
author_facet |
Hirschenhauser, Katharina Canário, Adelino V. M. Ros, Albert F. H. Taborsky, Michael Oliveira, Rui Filipe |
author_role |
author |
author2 |
Canário, Adelino V. M. Ros, Albert F. H. Taborsky, Michael Oliveira, Rui Filipe |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Repositório do ISPA |
dc.contributor.author.fl_str_mv |
Hirschenhauser, Katharina Canário, Adelino V. M. Ros, Albert F. H. Taborsky, Michael Oliveira, Rui Filipe |
dc.subject.por.fl_str_mv |
Androgen responses Conjugated metabolites Non-invasive methods Gill diffusion Steroid excretion Urine Challenge Cichlid |
topic |
Androgen responses Conjugated metabolites Non-invasive methods Gill diffusion Steroid excretion Urine Challenge Cichlid |
description |
We previously investigated the androgen responsiveness of males to simulated partner and territory intrusions in five African cichlid species (Neolamprologus pulcher, Lamprologus callipterus, Tropheus moorii, Pseudosimochromis curvifrons, Oreochromis mossambicus; Hirschenhauser et al., 2004). Here we re-analysed data on 11-ketotestosterone (11-KT) levels in holding water to compare the free (presumably from the gills) and conjugated (presumably from urine and faeces) 11-KT fractions. We sampled (i) pre-test baseline control levels from individual males in social isolation and (ii) response levels released after social interactions, either with an ovulating female or a male territory intruder. In four out of five species, conjugated metabolites contributed to the observed total 11-KT responses in water during social context, which was particularly apparent in peak responsive individuals exposed to male intruders. Thus, in water from males sampled in isolation immunoreactive 11-KT seemed to derive both from gills and urine, whereas the urinary 11-KT component apparently increased in the social context, particularly when a male was challenged by a same-sex intruder. These results suggest that (i) the social context may affect urine release patterns of males and (ii) 11- KT data acquired by using fish-holding water may not simply reflect the passive transmission of steroid hormones via the gills. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01T00:00:00Z 2008-01-01T00:00:00Z 2012-03-17T12:49:54Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.12/1273 |
url |
http://hdl.handle.net/10400.12/1273 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Behaviour, 145, 1367-1388 0005-7959 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Brill |
publisher.none.fl_str_mv |
Brill |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130053781487616 |