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Control of Testicular Cycles in the Song Sparrow, Melospiza melodia melodia: Interaction of Photoperiod and an Endogenous Program?

โœ Scribed by John C. Wingfield


Book ID
112245653
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
501 KB
Volume
92
Category
Article
ISSN
0016-6480

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Changes in plasma levels of testosterone
โœ John C. Wingfield; Masaru Wada ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Springer ๐ŸŒ English โš– 598 KB

Previous investigations have shown that malemale interactions over territory boundaries result in an increase in plasma levels of testosterone (T). In order to determine the time course of this increase following an agonistic challenge, male song sparrows, Zonotrichia (= Melospiza) melodia, were exp