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Journal of Wildlife Diseases, 17(4), 1981, pp. 593-596
© Wildlife Disease Association  1981
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Beta-endorphin levels in blood from selected Alaskan mammals

AW Franzmann, A Flynn, CC Schwartz, DG Calkins, and L Nichols Jr


ABSTRACT

Blood samples were analyzed for beta-endorphin from 43 non-torpid black bear (Ursus americanus), 8 torpid black bear, 3 non-torpid brown bear (Ursus arctos), 14 moose (Alces alces), 6 mountain goats (Oreamnus americanus) and 30 Steller sea lions (Eumetopias jubatus). Beta-endorphin levels were detected in all species sampled and there were no significant differences in levels among non-torpid black bear, brown bear and sea lions. Also, no differences were detected between moose and mountain goats, but all other comparisons were significantly different (P less than 0.001). Torpid black bear had higher levels than all other groups. Moose and mountain goats had the lowest levels. The possibility of beta-endorphin influencing behavior and physiology of mammals is discussed.




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Copyright © 1981 by the Wildlife Disease Association.