Comprehensive endocrine response to acute stress in the bottlenose dolphin from serum, blubber, and feces

General and Comparative Endocrinology
Cory D ChampagneDorian S Houser

Abstract

Several hormones are potential indicators of stress in free-ranging animals and provide information on animal health in managed-care settings. In response to stress, glucocorticoids (GC, e.g. cortisol) first appear in circulation but are later incorporated into other tissues (e.g. adipose) or excreted in feces or urine. These alternative matrices can be sampled remotely, or by less invasive means, than required for blood collection and are especially valuable in highly mobile species, like marine mammals. We characterized the timing and magnitude of several hormones in response to a stressor in bottlenose dolphins (Tursiops truncatus) and the subsequent incorporation of cortisol into blubber, and its metabolites excreted in feces. We evaluated the endocrine response to an acute stressor in bottlenose dolphins under managed care. We used a standardized stress protocol where dolphins voluntarily beached onto a padded platform and remained out of water for two hours; during the stress test blood samples were collected every 15 min and blubber biopsies were collected every hour (0, 60, and 120 min). Each subject was studied over five days: voluntary blood samples were collected on each of two days prior to the stress test; 1 and 2 ...Continue Reading

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Citations

Apr 3, 2020·The Journal of the Acoustical Society of America·Dorian S HouserJames J Finneran
Sep 10, 2020·Conservation Physiology·Laura Pujade BusquetaJane I Khudyakov
Feb 26, 2019·Scientific Reports·Jared S DeyarminJane I Khudyakov
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Aug 24, 2021·General and Comparative Endocrinology·Greta Dalle LucheSusan Bengtson Nash
Aug 31, 2021·PloS One·Lisa K LauderdaleLance J Miller

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