La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Validation of a non-invasive technique for quantifying a stress-associated biomarker in a southern African hornbill (2021)
Auteurs :	Michelle Bouwer, Auteur ; Celiwe A. Ngcamphalala, Auteur ; André Ganswindt, Auteur ; Andrew E. McKechnie, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (162(2) April, 2021)
Article en page(s) :	615-619
Langues:	Anglais
Résumé :	Quantification of glucocorticoids and their metabolites as a central component of the physiological stress response has many potential applications in ornithological research, but require careful species-specific validations. We established a reliable non-invasive method to measure faecal glucocorticoid metabolites (fGCM) in the southern yellow-billed hornbill (Tockus leucomelas). Following an adrenocorticotropic hormone (ACTH) challenge, plasma corticosterone levels increased by 110%, with a tetrahydrocorticosterone enzyme immunoassay (EIA) revealing a ~ fourfold increase in fGCM concentrations approximately 3 h post-injection. These data reveal droppings are a suitable matrix for monitoring stress-associated biomarkers in this species and suggest the tetrahydrocorticosterone EIA may often be appropriate for wild birds.
En ligne :	https://doi.org/10.1007/s10336-021-01861-5

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