PMID: 3770658Sep 1, 1986Paper

Hormonal regulation of male reproductive behavior in the lizard Anolis sagrei: a test of the aromatization hypothesis

Hormones and Behavior
Richard R Tokarz

Abstract

This study examined the hypothesis that aromatization of testosterone (T) to estradiol (E) is required to activate reproductive behavior in castrated male lizards (Anolis sagrei). Adult, reproductively active males were assigned to an intact control group or to one of four treatment groups. Treatment males were castrated and 1 week later three of the four castrated groups were implanted with subcutaneous pellets containing either 0.05 mg of E, 0.5 mg of T, or 0.5 mg of dihydrotestosterone (DHT). Two weeks after pellet implantation, males were tested with stimulus males, and 2 days later were tested with stimulus females. Behavioral tests were of 15-min duration and were videotaped. Significantly fewer E-treated castrates erected a crest in tests with stimulus males than did intact males. In tests with stimulus females, significantly fewer E-treated castrates displayed, neck-gripped, and intromitted than did intact males. Estradiol-treated castrates also showed significantly less display behavior than did intact males. However, aggressive and sexual behavior of DHT-treated castrates was not significantly different from that of intact males. The same was true for T-treated castrates with the exception that display behavior in tes...Continue Reading

References

Oct 1, 1979·Hormones and Behavior·E Adkins, L Schlesinger
Mar 1, 1976·Hormones and Behavior·P Mason, E K Adkins
Jun 1, 1975·Journal of Steroid Biochemistry·G Pérez-PalaciosC Beyer

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Citations

Nov 17, 1998·Physiology & Behavior·S M Winkler, J Wade
Jan 6, 2000·General and Comparative Endocrinology·C H SummersK J Renner
May 24, 2014·General and Comparative Endocrinology·Alison GolinskiLukáš Kratochvíl
Apr 12, 2008·Hormones and Behavior·Sara SarkeyLydia L DonCarlos
Nov 3, 2009·Physiology & Behavior·Stephany Latham, Juli Wade
Jan 1, 1990·Neuroscience and Biobehavioral Reviews·E Adkins-Regan

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