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

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.

Amphibia, the animal group that includes frogs, toads, salamanders, and caecilians, contains more than 4,500 known living species and new ones are being discovered continuously. This book focuses on the natural history of amphibians worldwide, how interaction with their environment over time has affected their evolutionary processes and what factors will determine their destinies. 37 photos. 52 line illus.

The Reproduction of Vertebrates ...