Repository logo
 
Publication

Oestradiol and prostaglandin F2 alpha regulate sexual displays in females of a sex-role reversed fish

2014-03Journal article Open access
Simple item page
dc.contributor.authorGonçalves, David
dc.contributor.authorCosta, Silvia Santos
dc.contributor.authorTeles, Magda C.
dc.contributor.authorSilva, Helena
dc.contributor.authorInglês, Mafalda
dc.contributor.authorOliveira, Rui F.
dc.date.accessioned2018-12-07T14:53:42Z
dc.date.available2018-12-07T14:53:42Z
dc.date.issued2014-03
dc.description.abstractThe mechanisms regulating sexual behaviours in female vertebrates are still poorly understood, mainly because in most species sexual displays in females are more subtle and less frequent than displays in males. In a sex-role reversed population of a teleost fish, the peacock blenny Salaria pavo, an external fertilizer, females are the courting sex and their sexual displays are conspicuous and unambiguous. We took advantage of this to investigate the role of ovarian-synthesized hormones in the induction of sexual displays in females. In particular, the effects of the sex steroids oestradiol (E2) and testosterone (T) and of the prostaglandin F2 alpha (PGF2 alpha) were tested. Females were ovariectomized and their sexual behaviour tested 7 days (sex steroids and PGF2 alpha) and 14 days (sex steroids) after ovariectomy by presenting females to an established nesting male. Ovariectomy reduced the expression of sexual behaviours, although a significant proportion of females still courted the male 14 days after the ovary removal. Administration of PGF2 alpha to ovariectomized females recovered the frequency of approaches to the male's nest and of courtship displays towards the nesting male. However, E2 also had a positive effect on sexual behaviour, particularly on the frequency of approaches to the male's nest. T administration failed to recover sexual behaviours in ovariectomized females. These results suggest that the increase in E2 levels postulated to occur during the breeding season facilitates female mate-searching and assessment behaviours, whereas PGF2 alpha acts as a short-latency endogenous signal informing the brain that oocytes are mature and ready to be spawned. In the light of these results, the classical view for female fishes, that sex steroids maintain sexual behaviour in internal fertilizers and that prostaglandins activate spawning behaviours in external fertilizers, needs to be reviewed.
dc.description.sponsorshipPortuguese Foundation for Science and Technology (FCT) [POCTI/BSE/38395/2001, PTDC/MAR/69749/2006, 331/2001]; Macao Science and Technology Development Fund (FDCT) [012/2012/A1]; FCT [SFRH/BPD/30367/2006]
dc.identifier.doi10.1098/rspb.2013.3070
dc.identifier.issn0962-8452
dc.identifier.issn1471-2954
dc.identifier.urihttp://hdl.handle.net/10400.1/11647
dc.language.isoeng
dc.peerreviewedyes
dc.publisherRoyal Soc
dc.relationHormones and life-history trade-offs and plasticity: a study on alternative reproductive tactics in blenniid fish
dc.relationSPATIAL COGNITION IN INTERTIDAL FISH
dc.subjectBlenny Salaria-Pavo
dc.subjectMating Call Phonotaxis
dc.subjectSteroid-Hormone Levels
dc.subjectSpawning Behavior
dc.subjectPeacock Blenny
dc.subjectReproductive-Behavior
dc.subjectArginine Vasotocin
dc.subjectAmerican Toad
dc.subjectSneaker Males
dc.subjectGoldfish
dc.titleOestradiol and prostaglandin F2 alpha regulate sexual displays in females of a sex-role reversed fish
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHormones and life-history trade-offs and plasticity: a study on alternative reproductive tactics in blenniid fish
oaire.awardTitleSPATIAL COGNITION IN INTERTIDAL FISH
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCTI%2FBSE%2F38395%2F2001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F69749%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F30367%2F2006/PT
oaire.citation.issue1778
oaire.citation.startPage20133070
oaire.citation.titleProceedings of the Royal Society B-Biological Sciences
oaire.citation.volume281
oaire.fundingStreamPOCI
oaire.fundingStream3599-PPCDT
person.familyNameGoncalves
person.givenNameDavid
person.identifier.ciencia-id331D-3437-C4CD
person.identifier.orcid0000-0001-6851-7215
person.identifier.ridL-3514-2016
person.identifier.scopus-author-id7005392651
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication66201ec2-b295-4b89-ac7c-b9af369d552f
relation.isAuthorOfPublication.latestForDiscovery66201ec2-b295-4b89-ac7c-b9af369d552f
relation.isProjectOfPublicationa01c7ef1-93ae-4a64-9d2c-8cf017510b0d
relation.isProjectOfPublicationf9c26bfe-dc56-42d7-919d-6406839a1dab
relation.isProjectOfPublication4578795d-ea18-46fe-a660-92a6933f9444
relation.isProjectOfPublication.latestForDiscoveryf9c26bfe-dc56-42d7-919d-6406839a1dab

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Oestradiol and prostaglandin F2 alpha regulate sexual displays in females of a sex-role reversed fish.pdf
Size:
361.92 KB
Format:
Adobe Portable Document Format
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)