Activation of aggressive behavior by progesterone and testosterone in male tree lizards, Urosaurus ornatus.

@article{Weiss2004ActivationOA,
  title={Activation of aggressive behavior by progesterone and testosterone in male tree lizards, Urosaurus ornatus.},
  author={Stacey L Weiss and Marian Chapman Moore},
  journal={General and comparative endocrinology},
  year={2004},
  volume={136 2},
  pages={282-8}
}
Testosterone is usually thought to be the major sex steroid regulating adult male territorial aggression in vertebrates. However, recent evidence has suggested a role for progesterone, as well as testosterone, in the organization of the two male reproductive phenotypes of tree lizards (Urosaurus ornatus), which differ in adult levels of territorial behavior. In the present experiment we tested whether progesterone and testosterone could also play an activational role in the expression of adult… CONTINUE READING

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