Transitions Between Sexual Systems
DOWNLOAD
Download Transitions Between Sexual Systems PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Transitions Between Sexual Systems book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Transitions Between Sexual Systems
DOWNLOAD
Author : Janet L. Leonard
language : en
Publisher: Springer
Release Date : 2019-05-21
Transitions Between Sexual Systems written by Janet L. Leonard and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-21 with Science categories.
This book focuses on explaining the distribution of sexual systems (simultaneous hermaphroditism, sequential hermaphroditism, environmental sex determination,dioecy, androdioecy, etc.) among taxa, which remains a major challenge in evolutionary biology. Although significant advances have been made for angiosperms, there is not yet a theory that predicts the sexual system for the majority of animal taxa, and other taxa of plants also remain poorly understood. The problem, particularly for animals, is that sexual systems can be very conservative, with whole phyla and classes being characterized by a single sexual system; for example essentially the whole phylum Platyhelminthes is simultaneously hermaphroditic, whereas the Insecta (Hexapoda) and the Tetrapoda among the vertebrates, are exclusively dioecious. Sex allocation theory on the other hand, suggests that sexual systems should be highly responsive to evolution, changing with population density, life span, patterns of resource availability, etc. The book provides an overview of the topic and then presents a series of chapters, each dealing with a taxon with substantial lability in sexual system in order to identify the factors associated with changes in sexual system in each case. By doing so, the authors reveal factors that have not been considered in formal theory but seem to have a major impact on transitions between sexual systems. This book appeals to a wide readership in fields from zoology and evolutionary biology to botany.
Major Evolutionary Transitions In Flowering Plant Reproduction
DOWNLOAD
Author : Spencer C. H. Barrett
language : en
Publisher: University of Chicago Press
Release Date : 2008-11-28
Major Evolutionary Transitions In Flowering Plant Reproduction written by Spencer C. H. Barrett and has been published by University of Chicago Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-28 with Science categories.
The first volume to address the study of evolutionary transitions in plants, Major Evolutionary Transitions in Flowering Plant Reproduction brings together compelling work from the three areas of significant innovation in plant biology: evolution and adaptation in flowers and pollination, mating patterns and gender strategies, and asexual reproduction and polyploidy. Spencer C. H. Barrett assembles here a distinguished group of authors who address evolutionary transitions using comparative and phylogenetic approaches, the tools of genomics, population genetics, and theoretical modeling, and through studies in development and field experiments in ecology. With special focus on evolutionary transitions and shifts in reproductive characters—key elements of biological diversification and research in evolutionary biology—Major Evolutionary Transitions in Flowering Plant Reproduction is the most up-to-date treatment of a fast-moving area of evolutionary biology and ecology.
The Evolution Of Sex Determination
DOWNLOAD
Author : Leo Beukeboom
language : en
Publisher: OUP Oxford
Release Date : 2014-06-12
The Evolution Of Sex Determination written by Leo Beukeboom and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-12 with Science categories.
Sexual reproduction is a fundamental aspect of life. It is defined by the occurrence of meiosis and the fusion of two gametes of different sexes or mating types. Sex-determination mechanisms are responsible for the sexual fate and development of sexual characteristics in an organism, be it a unicellular alga, a plant, or an animal. In many cases, sex determination is genetic: males and females have different alleles or different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex may be determined by environmental (e.g. temperature) or social variables (e.g. the size of an organism relative to other members of its population). Surprisingly, sex-determination mechanisms are not evolutionarily conserved but are bewilderingly diverse and appear to have had rapid turnover rates during evolution. Evolutionary biologists continue to seek a solution to this conundrum. What drives the surprising dynamics of such a fundamental process that always leads to the same outcome: two sex types, male and female? The answer is complex but the ongoing genomic revolution has already greatly increased our knowledge of sex-determination systems and sex chromosomes in recent years. This novel book presents and synthesizes our current understanding, and clearly shows that sex-determination evolution will remain a dynamic field of future research. The Evolution of Sex Determination is an advanced, research level text suitable for graduate students and researchers in genetics, developmental biology, and evolution.
Hermaphroditism And Mating Systems In Fish
DOWNLOAD
Author : Tetsuo Kuwamura
language : en
Publisher: Springer Nature
Release Date : 2022-12-13
Hermaphroditism And Mating Systems In Fish written by Tetsuo Kuwamura and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-13 with Science categories.
This book provides a comprehensive review of hermaphroditism in fishes. It focuses on the behavioral ecology of functional hermaphroditism in fishes and discusses its evolution. Approximately 99% of all vertebrate species consist of separate-sex individuals (gonochorists), i.e., pure males and pure females. The other 1% of vertebrate species are hermaphroditic, and almost all of them are fishes. Among hermaphroditic fishes, four major types of hermaphroditism are known: simultaneous (or synchronous) hermaphroditism, protandry (male-to-female sex change), protogyny (female-to-male sex change), and bidirectional sex change (or reversed sex change in protogynous species). The book examines the occurrence of hermaphroditism in relation to phylogeny and mating systems. It also reviews the hypotheses for the evolution of hermaphroditism, and the size-advantage model, which is the main theory for the evolution of sex change, tested in relation to the mating system. The appendix in the last chapter provides an annotated list of hermaphroditic fish species (ca. 500 spp.).
Evolutionary Ecology Of Social And Sexual Systems
DOWNLOAD
Author : J. Emmett Duffy
language : en
Publisher: Oxford University Press
Release Date : 2007-09-06
Evolutionary Ecology Of Social And Sexual Systems written by J. Emmett Duffy and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-06 with Science categories.
Understanding of animal social and sexual evolution has seen a renaissance in recent years with discoveries of frequent infidelity in apparently monogamous species, the importance of sperm competition, active female mate choice, and eusocial behavior in animals outside the traditional social insect groups. Each of these findings has raised new questions, and suggested new answers, about the evolution of behavioral interactions among animals. This volume synthesizes recent research on the sexual and social biology of the Crustacea, one of the dominant invertebrate groups on earth. Its staggering diversity includes ecologically important inhabitants of nearly every environment from deep-sea trenches, through headwater streams, to desert soils. The wide range of crustacean phenotypes and environments is accompanied by a comparable diversity of behavioral and social systems, including the elaborate courtship and wildly exaggerated morphologies of fiddler crabs, the mysterious queuing behavior of migrating spiny lobsters, and even eusociality in coral-reef shrimps. This diversity makes crustaceans particularly valuable for exploring the comparative evolution of sexual and social systems. Despite exciting recent advances, however, general recognition of the value of Crustacea as models has lagged behind that of the better studied insects and vertebrates. This book synthesizes the state of the field in crustacean behavior and sociobiology and places it in a conceptually based, comparative framework that will be valuable to active researchers and students in animal behavior, ecology, and evolutionary biology. It brings together a group of internationally recognized and rising experts in fields related to crustacean behavioral ecology, ranging from physiology and functional morphology, through mating and social behavior, to ecology and phylogeny. Each chapter makes connections to other, non-crustacean taxa, and the volume closes with a summary section that synthesizes the contributions, discusses anthropogenic impacts, highlights unanswered questions, and provides a vision for profitable future research.
The Evolution Of Primary Sexual Characters In Animals
DOWNLOAD
Author : Janet Leonard
language : en
Publisher: Oxford University Press
Release Date : 2010-07-19
The Evolution Of Primary Sexual Characters In Animals written by Janet Leonard and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-19 with Language Arts & Disciplines categories.
This edited volume explores primary sexual characters in a wide variety of animal taxa. It provides an overview of sexual diversity, the selective pressures that have shaped it, and an introduction to the data and theoretical issues in sexual selection that are changing our view of sexual processes.
The Evolution Of Primary Sexual Characters In Animals
DOWNLOAD
Author : Janet Leonard
language : en
Publisher: Oxford University Press
Release Date : 2010-07-16
The Evolution Of Primary Sexual Characters In Animals written by Janet Leonard and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-16 with Science categories.
Primary sexual traits, those structures and processes directly involved in reproduction, are some of the most diverse, specialized, and bizarre in the animal kingdom. Moreover, reproductive traits are often species-specific, suggesting that they evolved very rapidly. This diversity, long the province of taxonomists, has recently attracted broader interest from evolutionary biologists, especially those interested in sexual selection and the evolution of reproductive strategies. Primary sexual characters were long assumed to be the product of natural selection, exclusively. A recent alternative suggests that sexual selection explains much of the diversity of "primary" sexual characters. A third approach to the evolution of reproductive interactions after copulation or insemination has been to consider the process one of sexual conflict. That is, the reproductive processes of a species may reflect, as does the mating system, evolution acting on males and on females, but in different directions. In this volume, authors explore a wide variety of primary sexual characters and selective pressures that have shaped them, from natural selection for offspring survival to species-isolating mechanisms, sperm competition, cryptic female choice and sexual arms races. Exploring diverse reproductive adaptations from a theoretical and practical perspective, The Evolution of Primary Sexual Characters will provide an unparalleled overview of sexual diversity in many taxa and an introduction to the issues in sexual selection that are changing our view of sexual processes.
The Genetics And Biology Of Sexual Conflict
DOWNLOAD
Author : William Richard Rice
language : en
Publisher:
Release Date : 2014
The Genetics And Biology Of Sexual Conflict written by William Richard Rice and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Science categories.
"A subject collection from Cold Spring Harbor Perspectives in Biology."
The Natural History Of The Crustacea Reproductive Biology
DOWNLOAD
Author : Rickey Cothran
language : en
Publisher: Oxford University Press, USA
Release Date : 2020-04-24
The Natural History Of The Crustacea Reproductive Biology written by Rickey Cothran and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-24 with Science categories.
This is the sixth volume of a ten-volume series on The Natural History of the Crustacea. The volume synthesizes in nineteen chapters our current understanding of diverse topics in crustacean reproductive biology. In the first part of this book, the chapters address allocation strategies to reproduction, gamete production, brooding behavior, and other components of parental care in crustaceans. The second part of the volume centers on sexual systems in crustaceans. The third section of the volume covers crustacean mating systems and sexual selection. Reproductive Biology ends with three chapters covering diverse topics including reproductive rhythms, crustacean personality research, and record breaking crustaceans with respect to reproductive characters.
The Evolution Of Sex Determination
DOWNLOAD
Author : Leo W. Beukeboom
language : en
Publisher: Oxford University Press, USA
Release Date : 2014
The Evolution Of Sex Determination written by Leo W. Beukeboom and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Science categories.
temperature) or social variables (e.g.