Author : Maria Oielska
Publisher : CRC Press
Page : 437 pages
File Size : 47,26 MB
Release : 2009-01-07
Category : Nature
ISBN : 1482280132
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
Author : Maria Oielska
Publisher : CRC Press
Page : 444 pages
File Size : 30,5 MB
Release : 2009-01-07
Category : Nature
ISBN :
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.
Author :
Publisher :
Page : pages
File Size : 35,76 MB
Release : 2011
Category : Hormones, Sex
ISBN :
Author : Christopher A. Phillips
Publisher : University of Illinois Press
Page : 304 pages
File Size : 25,6 MB
Release : 2022-06-28
Category : Nature
ISBN : 0252053257
The second edition of the Field Guide to Amphibians and Reptiles of Illinois offers up-to-date information on the state’s 102 species of frogs and toads, salamanders, turtles, lizards, and snakes. Detailed descriptions by the authors include habitats, distinguishing features, behaviors, and other facts, while revised range maps and full-color photographs help users recognize animals in the field. In addition, an identification key and easy-to-navigate page layouts guide readers through extensive background material on each species' population, diet, predators, reproduction, and conservation status. A one-of-a-kind resource, the Field Guide to Amphibians and Reptiles of Illinois is a definitive guide aimed at biologists, teachers, students, wildlife specialists, natural resource managers, conservationists, law enforcement officials, landowners, hobbyists, and everyone else eager to explore herpetology and nature in the Prairie State.
Author : Kentwood D. Wells
Publisher : University of Chicago Press
Page : 1162 pages
File Size : 33,95 MB
Release : 2010-02-15
Category : Science
ISBN : 0226893332
Consisting of more than six thousand species, amphibians are more diverse than mammals and are found on every continent save Antarctica. Despite the abundance and diversity of these animals, many aspects of the biology of amphibians remain unstudied or misunderstood. The Ecology and Behavior of Amphibians aims to fill this gap in the literature on this remarkable taxon. It is a celebration of the diversity of amphibian life and the ecological and behavioral adaptations that have made it a successful component of terrestrial and aquatic ecosystems. Synthesizing seventy years of research on amphibian biology, Kentwood D. Wells addresses all major areas of inquiry, including phylogeny, classification, and morphology; aspects of physiological ecology such as water and temperature relations, respiration, metabolism, and energetics; movements and orientation; communication and social behavior; reproduction and parental care; ecology and behavior of amphibian larvae and ecological aspects of metamorphosis; ecological impact of predation on amphibian populations and antipredator defenses; and aspects of amphibian community ecology. With an eye towards modern concerns, The Ecology and Behavior of Amphibians concludes with a chapter devoted to amphibian conservation. An unprecedented scholarly contribution to amphibian biology, this book is eagerly anticipated among specialists.
Author : Laurie J. Vitt
Publisher : Academic Press
Page : 544 pages
File Size : 35,99 MB
Release : 2012-12-02
Category : Science
ISBN : 0323139248
Herpetology has always been one of the most exciting disciplines of zoology. During the past few years the field has continued to grow, yet it has been plagued by scarcity of comprehensive, up-to-date textbooks containing the most important developments. This timely book fills that void. Through skillful synthesis, the author summarizes the diversity in the biology of living amphibians and reptiles and describes the breadth of current herpetological research. Topics covered include the evolution, classification, development, reproduction, population, and environmental issues surrounding the study of amphibians and reptiles. Designed as an advanced undergraduate textbook, Herpetology is a valuable resource for students, practitioners, and interested amateurs alike. - Provides an incisive survey and much needed update of the field - Emphasizes the biological diversity among amphibians and reptiles - Details the most recent research findings, citing ke
Author : William E. Duellman
Publisher : JHU Press
Page : 702 pages
File Size : 21,84 MB
Release : 1994-02
Category : Nature
ISBN : 9780801847806
Now reissued in paperback with an updated preface by the authors, Biology of Amphibians remains the standard work in its field.
Author : David O. Norris
Publisher : Springer Science & Business Media
Page : 627 pages
File Size : 25,52 MB
Release : 2012-12-06
Category : Science
ISBN : 1461318696
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.
Author : Richard Sadleir
Publisher : Elsevier
Page : 242 pages
File Size : 28,29 MB
Release : 2012-12-02
Category : Science
ISBN : 0323159354
The Reproduction of Vertebrates describes the vertebrate reproductive systems in an evolutionary sequence and according to taxonomic classes. This book is divided into seven chapters; each chapter tackles a specific vertebrate class. This text specifically considers fish, amphibians, reptiles, birds, mammals, and man. Discussions in each chapter include these species' evolutionary history, classification, external indications of sex, mating, fertilization, development, endocrinology, breeding seasons, sexual maturation, migration, response to environmental factors, and economic importance. The concluding chapter presents the comparative aspects of reproduction of these vertebrates. This text is of great value to teachers and students who are interested in the vertebrate reproductive system.
Author : Robert C. Stebbins
Publisher : Princeton University Press
Page : 336 pages
File Size : 41,53 MB
Release : 1997-01-26
Category : Nature
ISBN : 9780691102511
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.
