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dc.contributor.authorHarcourt, Robert Geoffrey
dc.contributor.authorTurner, Emma
dc.contributor.authorHall, Ailsa
dc.contributor.authorWaas, Joseph R.
dc.contributor.authorHindell, Mark
dc.coverage.spatialGermanyen_NZ
dc.date.accessioned2012-05-02T04:21:08Z
dc.date.available2012-05-02T04:21:08Z
dc.date.copyright2010-02-05
dc.date.issued2010
dc.identifier.citationHarcourt, R.G., Turner, E., Hall, A., Waas, J.R. & Hindell, M. (2010). Effects of capture stress on free-ranging, reproductively active male Weddell seals. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 196(2), 147-154.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/6289
dc.description.abstractPhysiological stress responses to capture may be an indicator of welfare challenges induced by animal handling. Simultaneously, blood chemistry changes induced by stress responses may confound experimental design by interacting with the biological parameters being measured. Cortisol elevation is a common indicator of stress responses in mammals and reproductive condition can profoundly influence endocrine response. We measured changes in blood cortisol and testosterone induced by handling reproductively active male Weddell seals (Leptonychotes weddellii) early and late in the breeding season. Weddell seals have the highest resting cortisol levels of all mammals yet showed a clear, prolonged elevation in cortisol in response to capture. Responses were similar when first caught and when caught a second time, later in the breeding season. Baseline testosterone levels declined over the breeding season but were not altered by capture. Administering a light dose of diazepam significantly ameliorated the cortisol response of handled animals without affecting testosterone levels. This may be an effective way of reducing acute capture stress responses. Male breeding success in years males were handled was no different to the years they were not, despite the acute capture response, suggesting no long-term impact of handling on male reproductive output.en_NZ
dc.language.isoen
dc.publisherSpringeren_NZ
dc.relation.ispartofJournal of Comparative Physiology A
dc.relation.urihttp://www.springerlink.com/content/r0u678352vq77m5v/en_NZ
dc.subjectmarine mammalsen_NZ
dc.subjectLeptonychotes weddelliien_NZ
dc.subjecthandling stressen_NZ
dc.subjectcortisolen_NZ
dc.subjectAntarcticaen_NZ
dc.titleEffects of capture stress on free-ranging, reproductively active male Weddell sealsen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1007/s00359-009-0501-0en_NZ
dc.relation.isPartOfJournal of Comparative Physiology Aen_NZ
pubs.begin-page147en_NZ
pubs.elements-id37397
pubs.end-page154en_NZ
pubs.issue2en_NZ
pubs.volume196en_NZ


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