Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 46, Problem 13PIAT
Summary Introduction
To review:
The response of habituated and nonhabituated penguins to be compared in terms of corticosterone level.
Introduction:
Corticosterone is a glucocorticoid, major stress hormone, present in many species of amphibians, reptiles, rodents, and birds, and it is mainly involved in energy regulation, immune reactions, and stress responses. The level of corticosterone differs in both the habituated and nonhabituated penguins on the basis of response levels. Stress hormones are released in the response to a threat. The physiological and behavioral mechanism developed in penguins is due to an evolutionary mechanism.
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