Literaturdatenbank
Literaturdatenbank |
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Gregory, L. F., & Schmid, J. R. (2001). Stress responses and sexing of wild kemp's ridley sea turtles (lepidochelys kempii) in the northeastern gulf of mexico. General and Comparative Endocrinology, 124(1), 66–74.
Added by: Admin (13 Sep 2009 10:11:10 UTC) Last edited by: Beate Pfau (24 Nov 2011 15:31:01 UTC) |
| Resource type: Journal Article BibTeX citation key: Gregory2001a View all bibliographic details  |
Categories: General Keywords: Cheloniidae, Fortpflanzung = reproduction, Habitat = habitat, Lepidochelys, Lepidochelys kempii, Nordamerika = North America, Physiologie = physiology, Schildkröten = turtles + tortoises, Stress = stress Creators: Gregory, Schmid Collection: General and Comparative Endocrinology |
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| Abstract |
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Plasma corticosterone, glucose, and testosterone concentrations were measured in wild, immature specimens of the highly endangered Kemp's ridley sea turtle (Lepidochelys kempii) to determine effects of acute handling stress. Thirty-nine free-ranging turtles were captured by entanglement net near the Cedar Keys, Florida. Blood samples were collected immediately after retrieval from the net, and at 30 min (n = 15) and at 60 min (n = 29) thereafter. Mean plasma corticosterone and glucose concentrations increased significantly with time. No significant difference was observed over time for mean testosterone concentrations. Approximately half of the turtles demonstrated an increase in plasma testosterone after 60 min of captivity while the others demonstrated a decrease. Initial testosterone concentrations were used to determine the sex of individual turtles. Fifty-nine percent of turtles were classified as female, 33% as male, and 8% as indeterminant. The results of this study demonstrate a responsive hypothalamic-pituitary-adrenal axis and hyperglycemia in immature Kemp's ridley turtles during acute handling stress
Added by: Admin Last edited by: Beate Pfau |