Literaturdatenbank
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Jessop, T. S., Sumner, J. M., Limpus, C. J., & Whittier, J. M. (2004). Interplay between plasma hormone profiles, sex and body condition in immature hawksbill turtles (eretmochelys imbricata) subjected to a capture stress protocol. Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology, 137(1), 197–204.
Added by: Admin (22 Feb 2009 11:56:20 UTC) |
| Resource type: Journal Article BibTeX citation key: Jessop2004 View all bibliographic details  |
Categories: General Keywords: Cheloniidae, Eretmochelys, Eretmochelys imbricata, Physiologie = physiology, Schildkröten = turtles + tortoises, Stress = stress, Verhalten = ethology Creators: Jessop, Limpus, Sumner, Whittier Collection: Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology |
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| Abstract |
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We investigated plasma hormone profiles of corticosterone and testosterone in immature hawksbill turtles (Eretmochelys imbricata) in response to a capture stress protocol. Further, we examined whether sex and body condition were covariates associated with variation in the adrenocortical response of immature turtles. Hawksbill turtles responded to the capture stress protocol by significantly increasing plasma levels of corticosterone over a 5 h period. There was no significant sex difference in the corticosterone stress response of immature turtles. Plasma testosterone profiles, while significantly different between the sexes, did not exhibit a significant change during the 5 h capture stress protocol. An index of body condition was not significantly associated with a turtle's capacity to produce plasma corticosterone both prior to and during exposure to the capture stress protocol. In summary, while immature hawksbill turtles exhibited an adrenocortical response to a capture stress protocol, neither their sex nor body condition was responsible for variation in endocrine responses. This lack of interaction between the adrenocortical response and these internal factors suggests that the inactive reproductive- and the current energetic- status of these immature turtles are important factors that could influence plasma hormone profiles during stress. Author Keywords: Eretmochelys imbricata; Hawksbill turtle; Adrenocortical responsiveness; Corticosterone; Testosterone; Capture stress protocol; Sex; Body condition Article Outline 1. Introduction 2. Materials and methods 2.1. Field protocol 2.2. Determination of sex and body condition in hawksbill turtles 2.3. Capture stress protocol and sampling techniques 2.4. Radioimmunoassay 2.5. Data analysis 3. Results 3.1. The influence of capture stress, sex and body condition on plasma steroid profiles in immature hawksbill turtles 4. Discussion 5. Uncited references Acknowledgements References
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