Luteinizing hormone-releasing hormone and thyrotropin-releasing hormone induction of female sexual receptivity in the lizard, anolis carolinensis

Michael R. Alderete, Richard R. Tokarz, David Crew

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Both luteinizing hormone-releasing hormone (LHRH) and thyrotropin-releasing hormone (TRH) induce sexual receptivity in ovariectomized, estrogen-primed female lizard (Anolis carolinensis). Ovariectomized females pretreated with three daily injections of a subthreshold dose (0.2 μg) of estradiol benzoate were administered either 500, 1,000 or 1,500 ng of LHRH, or 1,000 ng of TRH 48 h following the last estrogen pretreatment injection. Hormone-treated females exhibited significantly higher sexual receptivity scores than controls when tested 2, 4, 6 and 24 h post-injection. Female sexual receptivity scores in females that were administered 500 ng of LHRH or 1,000 ng of deamido TRH were, however, no different than control scores at these test times. The observed ability of LHRH to increase female sexual receptivity is consistent with previous results in birds and mammals. The ability of TRH to increase female sexual receptivity is a novel finding that may underscore differences in neuroendocrine regulation of vertebrate estrous behavior.

Original languageEnglish (US)
Pages (from-to)200-205
Number of pages6
JournalNeuroendocrinology
Volume30
Issue number4
DOIs
StatePublished - Jan 1 1980

Keywords

  • Estrogen
  • Estrus
  • Lizards Sexual receptivity
  • Luteinizing hormone-releasing hormone
  • Reptiles
  • Thyrotropin-releasing hormone

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Endocrine and Autonomic Systems
  • Cellular and Molecular Neuroscience

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