Hormones and Reproduction in Fishes, Amphibians, and Reptiles (häftad)
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Format
Häftad (Paperback / softback)
Språk
Engelska
Antal sidor
613
Utgivningsdatum
2011-11-10
Upplaga
Softcover reprint of the original 1st ed. 1987
Förlag
Springer-Verlag New York Inc.
Medarbetare
Norris, David O. (ed.), Jones, Richard E. (ed.)
Illustrationer
XXV, 613 p.
Dimensioner
254 x 178 x 33 mm
Vikt
1094 g
Antal komponenter
1
Komponenter
1 Paperback / softback
ISBN
9781461290421

Hormones and Reproduction in Fishes, Amphibians, and Reptiles

av David O Norris, Richard E Jones
Häftad,  Engelska, 2011-11-10
1873
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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 "lower" vertebrates can result in development of "model systems" 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.
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David O Norris, Richard E Jones

Innehållsförteckning

1 Hormones and Sexual Differentiation.- I. Introduction.- A. Sex Determination.- II. Theoretical and Conceptual Context.- A. Organization vs. Activation: Critical Periods.- B. Adult Sexual Dimorphism.- C. The Nature of the Inducer(s).- III. Differentiation of the Gonads.- A. Fishes.- B. Amphibians.- C. Reptiles.- IV. Differentiation of Other Reproductive Structures.- A. Fishes.- B. Amphibians.- C. Reptiles.- V. Differentiation of Behavior and the Nervous System.- A. Fishes.- B. Amphibians..- C. Reptiles.- VI. Temperature and Sexual Differentiation.- VII. Environmental Hermaphroditism and Social Influences on Sexual Differentiation.- A. Fishes.- VIII. Summary and Conclusions.- A. The Nature of the Inducer(s).- B. How Useful is the Organizational Theory?.- C. Relationship Between Sex Determination and Differentiation..- D. Differentiation and Epigenesis.- IX. Acknowledgments.- X. References.- 2 Gonadotropin-Releasing Hormones in Fishes.- I. The primary Structure of Known GnRH Family Members.- A. Overview of Mammals and Birds.- B. Fishes.- C. Amphibians and Reptiles.- II. Characterization of New GnRH Molecules in Fishes.- A. Agnatha.- B. Chondrichthyes.- C. Osteichthyes.- 1. Nonteleosts.- 2. Teleosts.- III. Anatomical Location of GnRH in Fish Brain.- A. Agnatha.- B. Chondrichthyes.- C. Osteichthyes.- IV. Reproductive Responses to GnRH.- A. Agnatha.- 1. Gonadotropins (Gns).- 2. Steroids.- 3. Ovulation..- B. Chondrichthyes.- 1. Gonadotropins.- 2. Steroids.- 3. Ovulation.- C. Osteichthyes: Nonteleosts.- 1. Gonadotropins.- 2. Steroids.- 3. Ovulation.- D. Osteichthyes: Teleosts.- 1. Gonadotropins.- 2. Steroids.- 3. Ovulation and Spawning.- V. Summary and Future Research Directions.- A. Evolution of the GnRH Family.- B. The Primary Structure of GnRH in Other Fishes.- C. Multiple Forms of GnRH in Single Species of Fish.- D. Other Roles for GnRH in Fishes.- E. Inhibitory Effects of GnRH.- F. A Possible GnRIF.- G. The Nature of Fish GnRH Receptors..- H. The Fish GnRH Precursor(s).- VI. Acknowledgments.- VII. References.- 3 Role of Gonadotropin-Releasing Hormone in Regulation of Gonadotropin Secretion from Amphibian and Reptilian Pituitaries.- I. Identification and Chemical Characterization of GnRH.- A. Amphibians.- 1. Changes in Endogenous GnRH.- 2. Biochemistry of GnRH.- B. Reptiles.- 1. Biochemical Characterization.- II. Regulation of Pituitary Gonadotropin Release: In vivo studies.- A. Amphibians.- B. Reptiles.- III. In vitro Characterization of Pituitary Responsiveness to GnRH.- A. Amphibians.- B. Reptiles.- IV. Mechanism of Action of GnRH.- V. Future Research Directions.- VI. Acknowledgment.- VII. References.- 4 Prolactin and Reproduction.- I. Prolactin Receptors.- A. Overview of Mammals.- B. Fishes.- C. Amphibians.- D. Reptiles.- II. Effects of Prolactin on Gonads, Sexual Accessories and on Secondary Sexual Characters.- A. Overview of Mammals.- B. Fishes.- C. Amphibians.- D. Reptiles.- III. Prolactin and Adaptations to the Reproductive Environment.- A. Overview of Mammals.- B. Fishes.- C. Amphibians.- D. Reptiles.- IV. Prolactin and Reproductive Behavior.- A. Overview of Mammals.- B. Fishes.- 1. Migration.- 2. Sexual Behavior.- 3. Parental Behavior.- C. Amphibians.- 1. Water Drive.- 2. Sexual Behavior.- 3. Parental Care.- D. Reptiles.- V. Summary and Future Research Directions.- VI. References.- 5 Regulation of Ovarian Steroidogenesis.- I. Introduction.- II. Overview of Mammals.- III. Ovarian Morphology.- A. Cyclostomes.- B. Elasmobranchs.- C. Teleosts.- D. Amphibians.- E. Reptiles.- IV. Sites of Steroidogenesis.- A. Cyclostomes.- B. Elasmobranchs.- C. Teleosts.- D. Amphibians.- E. Reptiles.- V. Steroid Identification and Biosynthesis.- A. Cyclostomes.- B. Elasmobranchs.- C. Teleosts.- D. Amphibians.- E. Reptiles.- VI. Seasonal Profiles.- A. Cyclostomes.- B. Elasmobranchs.- C. Teleosts.- D. Amphibians.- E. Reptiles.- VII. Gonadotropic Control of Folliculogenesis and Steroidogenesis.- A. Cyclostomes.- B. Elasmobranchs.- C. Teleosts.-

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