Publication
Social context may affect urinary excretion of 11-ketotestosterone in african cichlids
| dc.contributor.author | Hirschenhauser, Katharina | |
| dc.contributor.author | Canário, Adelino V. M. | |
| dc.contributor.author | Ros, Albert F. H. | |
| dc.contributor.author | Taborsky, Michael | |
| dc.contributor.author | Oliveira, Rui Filipe | |
| dc.date.accessioned | 2012-03-17T12:49:54Z | |
| dc.date.available | 2012-03-17T12:49:54Z | |
| dc.date.issued | 2008 | |
| dc.description.abstract | 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. | por |
| dc.identifier.citation | Behaviour, 145, 1367-1388 | por |
| dc.identifier.issn | 0005-7959 | |
| dc.identifier.uri | http://hdl.handle.net/10400.12/1273 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Brill | por |
| dc.subject | Androgen responses | por |
| dc.subject | Conjugated metabolites | por |
| dc.subject | Non-invasive methods | por |
| dc.subject | Gill diffusion | por |
| dc.subject | Steroid excretion | por |
| dc.subject | Urine | por |
| dc.subject | Challenge | por |
| dc.subject | Cichlid | por |
| dc.title | Social context may affect urinary excretion of 11-ketotestosterone in african cichlids | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Leiden | por |
| oaire.citation.endPage | 1388 | por |
| oaire.citation.startPage | 1367 | por |
| oaire.citation.title | Behaviour | por |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |