Reductions in Hamster Serum Thyroxine Levels by Melatonin Are Not Altered by Changes in Serum Testosterone

By Champney T.H.  

General and Comparative Endocrinology, Vol. 123, Iss. 2, 2001-08 ,pp. : 121-126

Elsevier

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Testosterone Levels and Evoked Vocal Responses in a Natural Population of the Frog Batrachyla taeniata

By Solis R.   Penna M.  

Hormones and Behavior, Vol. 31, Iss. 2, 1997-04 ,pp. : 101-109

Academic Press

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Endogenous Estradiol and Testosterone Levels Are Associated with Cognitive Performance in Older Women and Men

By Wolf O.T.   Kirschbaum C.  

Hormones and Behavior, Vol. 41, Iss. 3, 2002-05 ,pp. : 259-266

Academic Press

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Testosterone, Endurance, and Darwinian Fitness: Natural and Sexual Selection on the Physiological Bases of Alternative Male Behaviors in Side-Blotched Lizards

By Sinervo B.   Miles D.B.   Frankino W.A.   Klukowski M.   DeNardo D.F.  

Hormones and Behavior, Vol. 38, Iss. 4, 2000-12 ,pp. : 222-233

Academic Press

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Female presence affects male behavior and testosterone levels in the European starling (Sturnus vulgaris)

By Pinxten R.   de Ridder E.   Eens M.  

Hormones and Behavior, Vol. 44, Iss. 2, 2003-08 ,pp. : 103-109

Elsevier

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