Reproduction of Amphibians

Highlighting caecilians, salamanders, and frogs and toads, this book synthesizes current literature and original research and describes the anatomy, histology, cytology, and molecular mechanisms that regulate reproductive cycles. Devoting separate chapters to males and females, it discusses gonad structure and development, gametogenesis, urogenital connections, and reproductive tracts. Heavily illustrated with original schemes and photographs, the text investigates somatic and germ cell origin during formation of undifferentiated gonads as well as embryonic and post-embryonic development, direct development, neoteny, and modifications in gametogenesis and meiosis in hybrids and polyploids.

Klappentext
This book deals with reproduction of Amphibians belonging to three extant orders: Caecilians, Salamanders, Frogs and Toads. Separate chapters have been written for males and females; the chapters describe gonad structure and development, gametogenesis, urogenital connections, and reproductive tracts. The authors have provided a synthesis of the lit

Inhalt
The Undifferentiated Amphibian Gonad: Formation of gonads in amphibians. Spermatogeneiss and Male Reproductive System in Amphibia. Anura: Structure of testis in Anura; Sperm collecting ducts and urogenital connections; Spermatogenesis in Anura; Regulation of spermatogenesis in Anura. Spermatogenesis and Male Reproductive System in Amphibia. Urodela: Structure of testis in Urodela; Urogenital connections; Spermatogenesis in Urodela. Spermatogenesis and Male Reproductive System in Amphibia. Gymnophiona: Introduction; Structure of testis in Gymnophiona; Urogenital connections; Spermatogenesis in Gymnophiona; Age of sexual maturity; Hormonal control of spermatogenesis. Oogenesis and Female Reproductive System in Amphibia. Anura: Structure of ovaries in Anura; Female reproductive tract; Oogenesis in Anura; Regulation of oogenesis in Anura. Oogenesis and Female Reproductive System in Amphibia. Urodela: Structure of ovary in Urodela; Female reproductive tract; Oogenesis; Postovulatory ovary; Atretic follicles. Oogenesis and Female Reproductive System in Amphibia. Gymnophiona: Structure of ovaries in Gymnophiona; Female reproductive tract in Gymnophiona; Oogenesis in Gymnophiona; Hormonal control of reproduction. Development and Reproduction of Amphibian: Species, Hybrids, and Polyploids: Early devlopment; Postembryonic development; Direct development; Reproduction of larvae (neoteny); Hybridization; Polyploidy; Reproduction of hybrids and allopolyploids; Hybridogenesis; Development and viability of hybrid progeny.

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