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dc.contributor.authorNarayan, Edward
dc.contributor.authorCockrem, John
dc.contributor.authorHero, Jean-Marc
dc.date.accessioned2017-05-03T15:44:25Z
dc.date.available2017-05-03T15:44:25Z
dc.date.issued2011
dc.date.modified2011-09-16T05:24:24Z
dc.identifier.issn00166480
dc.identifier.doi10.1016/j.ygcen.2011.06.015
dc.identifier.urihttp://hdl.handle.net/10072/40849
dc.description.abstractUrinary corticosterone metabolite responses to capture have recently been shown for the first time in amphibians, and in the present study urinary corticosterone metabolite responses to capture and to confinement in captivity were measured in adult cane toads (Rhinella marina) in Queensland, Australia. An adrenocorticotropic hormone (ACTH) challenge was used to provide a biological validation for urinary corticosterone metabolite concentrations measured by radioimmunoassay (RIA). Urinary corticosterone metabolite increased 1-2 days after ACTH but not saline injection and then returned to initial values, indicating that the RIA could detect changes in corticosterone secretion in toads. Urinary corticosterone metabolite responses to short-term capture and restraint in plastic bags were first apparent 2 h after capture of wild toads. Toads held communally in captivity for 5 days had elevated urinary corticosterone metabolite concentrations. Mean corticosterone concentrations declined significantly after a further 7 days in individual housing chambers. There was no sex difference in urinary corticosterone metabolite responses of toads to ACTH challenge, short-term capture or captivity. The relative amount of variation in the mean corticosterone responses was quantified by calculating coefficients of variation (CV) for each mean corticosterone response. Mean corticosterone at 0 min was more variable for captive toads than wild toads. Furthermore, initial corticosterone concentrations (0 min) were more variable than concentrations during the ACTH challenge, short-term capture and captivity. There was little change in the amount of variation of mean corticosterone levels between male and female toads with increasing time in captivity (12-29 days). This study has shown individual corticosterone responses of amphibians for the first-time, and has provided a novel method for quantifying the relative amount of variation in amphibian corticosterone responses.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom371
dc.relation.ispartofpageto377
dc.relation.ispartofissue2
dc.relation.ispartofjournalGeneral and Comparative Endocrinology
dc.relation.ispartofvolume173
dc.rights.retentionY
dc.subject.fieldofresearchComparative Physiology
dc.subject.fieldofresearchPhysiology
dc.subject.fieldofresearchZoology
dc.subject.fieldofresearchVeterinary Sciences
dc.subject.fieldofresearchcode060604
dc.subject.fieldofresearchcode0606
dc.subject.fieldofresearchcode0608
dc.subject.fieldofresearchcode0707
dc.titleUrinary corticosterone metabolite responses to capture and captivity in the cane toad (Rhinella marina)
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.date.issued2011
gro.hasfulltextNo Full Text
gro.griffith.authorHero, Jean-Marc
gro.griffith.authorNarayan, Edward J.
gro.griffith.authorCockrem, John


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