当前位置： SCI文献检索 > GENERAL AND COMPARATIVE ENDOCRINOLOGY期刊下所有文献 > Interactions between progesterone and androgens in the stimulation of sex behaviors in male little striped whiptail lizards, Cnemidophorus inornatus.

Interactions between progesterone and androgens in the stimulation of sex behaviors in male little striped whiptail lizards, Cnemidophorus inornatus.

Abstract：

:Progesterone is believed to have a suppressive or inhibitory role in regulating androgen-dependent sex behaviors in male mammals and birds. Previous studies in this laboratory have revealed that in the little striped whiptail lizard (Cnemidophorus inornatus), progesterone (P) can stimulate sex behavior in a proportion of the males. The present study sought to determine (i) interactions between androgens and P in activating sex behaviors, and (ii) the overlap in behavioral sensitivities to androgens and P in male C. inornatus. With an increasing length of castration the behavioral sensitivity of males to exogenous P was reduced. However, priming of castrated males with subthreshold doses of exogenous dihydrotestosterone (DHT) greatly facilitated subsequent behavioral responses to exogenous P. Progesterone treatments of castrated males were more effective at reinstating sex behaviors in males that exhibited high-intensity sex behaviors prior to castration compared to males that exhibited low-intensity sex behaviors. Finally, exogenous DHT is more effective at reinstating sex behaviors in P-sensitive males than in P-insensitive males. These data are discussed in light of possible mechanisms underlying the unusual behavioral effects of P in the Cnemidophorus model system.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Lindzey J,Crews D

doi

10.1016/0016-6480(92)90125-4

keywords:

subject

Has Abstract

pub_date

1992-04-01 00:00:00

pages

52-8

issue

1

eissn

0016-6480

issn

1095-6840

pii

0016-6480(92)90125-4

journal_volume

86

pub_type

杂志文章

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