Hormones and Reproduction in Fishes, Amphibians, and Reptiles

Hormones and Reproduction in Fishes, Amphibians, and Reptiles

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Comparative endocrinology is one of the most rapidly developing subdis ciplines within the field of endocrinology, and it is having a significant impact on research at the molecular, cellular, organisma1 and environmental levels. Much of the current ferment in endocrinology is in reproductive endocrinology. The purpose of this volume on hormones and reproduction in fishes, amphibians and reptiles is to summarize our present understandings and to identify important research problems to be addressed in the area of comparative reproductive endocrinology. It was inspired by the gathering at Copper Mountain, Colorado, of eminent endocrine scientists from around the world on the occasion of the Tenth International Symposium on Comparative Endocrinology in July, 1985. While preparing for that meeting, we decided that a special volume on reproductive endocrinology was needed to summarize what is known and to stimulate research in particular directions. Why do we emphasize fishes, amphibians and reptiles? First, knowledge about the reproductive endocrinology of these ectothermic vertebrates can provide a clearer picture of the evolution of reproductive hormones and their effects on target organs. This comparative approach can lead to new theories about the evolution of reproductive control mechanisms. Second, studies concerning the reproductive endocrinology of qlowerq vertebrates can result in development of qmodel systemsq for application to studies of birds and mammals. Indeed, information about the patterns of reproductive control in ectothermic vertebrates can tell us which are evolutionarily stable and which are labile.Moreover, in squamate reptiles the fetoplacental unit could not have any effect on the corpus luteum so far as the ... in regard to the source and nature of the luteolytic factors as well as the mechanisms causing corpus luteum regression. ... I wish to thank also Pr. P. Licht and Pr. R. Mead for permission to reproduce diagrams.


Title:Hormones and Reproduction in Fishes, Amphibians, and Reptiles
Author: David O. Norris, Richard E. Jones
Publisher:Springer Science & Business Media - 2012-12-06
ISBN-13:

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