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Sexuality In Fishes
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Book Synopsis Reproduction and Sexuality in Marine Fishes by : Kathleen S. Cole
Download or read book Reproduction and Sexuality in Marine Fishes written by Kathleen S. Cole and published by Univ of California Press. This book was released on 2010-10-28 with total page 643 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine fishes represent astonishing diversity with respect to practically every aspect of their biology. Reproductive modes and sexual patterns are especially fascinating and provide deep insight into general evolutionary problems. In this volume, chapters focus on reproduction and sexuality among groups of fishes defined by habitat, taxon, and the reproductive processes that are critical for reproductive success. The book illustrates how knowledge of reproductive biology among marine fishes can help identify vulnerable and potentially vulnerable species in the face of changing environmental conditions and increasing human-based pressures.
Book Synopsis Sexuality in Fishes by : T. J. Pandian
Download or read book Sexuality in Fishes written by T. J. Pandian and published by CRC Press. This book was released on 2010-09-15 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The unprecedented level of diversity recorded among the clones of self-fertilizing gynogenetic unisexuals and self-fertilizing simultaneous hermaphrodites challenges current ideas on the predominant role of recombination in promoting evolution of biological diversity. Though limited to a few species, the existence of self-fertilizing and cyclical sex changing hermaphrodites remians a puzzle to many geneticists and endocrinologists. Within a few days after the removal of a harem master or mistress, a successor changes sex and takes over the harem; the causes for the sex changing mechanism pose many challenges to socio-ecologists and behaviour specialists.This book is a synthesis of relevant and recent information on sexuality of fishes and points towards new directions of desired research.
Book Synopsis Genetic Sex Differentiation in Fish by : T. J. Pandian
Download or read book Genetic Sex Differentiation in Fish written by T. J. Pandian and published by CRC Press. This book was released on 2012-06-05 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of sex differentiation gonochoric and hermaphroditic fishes, this book examines sex chromosomes and sex determining genes, emphasizing the need to search for more than one sex-determining gene residing on different chromosomes. It traces the origin of hermaphrodites from secondary gonochores and explains the conservation of ho
Book Synopsis Sex Determination in Fish by : T. J. Pandian
Download or read book Sex Determination in Fish written by T. J. Pandian and published by CRC Press. This book was released on 2011-09-02 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to report that research in allogenics/xenogenics has conclusively shown that fishes have retained bisexual potency even after sexual maturity and spermiation. The XY genotype found in the unexpected female phenotypes sired by supermales (Y1Y2) and androgenic males (Y2Y2) points out the need to employ sex specific molecular ma
Book Synopsis Endocrine Sex Differentiation in Fish by : T. J. Pandian
Download or read book Endocrine Sex Differentiation in Fish written by T. J. Pandian and published by CRC Press. This book was released on 2013-05-07 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all vertebrates, fish exhibit unparalleled diversity of sexual plasticity and flexibility, ranging from gonochorism to unisexualism, and exceptional patterns of functional hermaphroditism. Fish farming and monosex aquaculture have led to reproductive dysfunction with males producing less milt, and females failing to ovulate and spawn. This book brings together relevant information on the role of the endocrine system on sexual differentiation in fish, and bridges the gap between molecular endocrinologists and fishery scientists.
Book Synopsis Sex Control in Aquaculture by : Hanping Wang
Download or read book Sex Control in Aquaculture written by Hanping Wang and published by John Wiley & Sons. This book was released on 2018-11-08 with total page 1810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Awarded Bookauthority's "Best Aquaculture Books of all Time" A comprehensive resource that covers all the aspects of sex control in aquaculture written by internationally-acclaimed scientists Comprehensive in scope, Sex Control in Aquaculture first explains the concepts and rationale for sex control in aquaculture, which serves different purposes. The most important are: to produce monosex stocks to rear only the fastest-growing sex in some species, to prevent precocious or uncontrolled reproduction in other species and to aid in broodstock management. The application of sex ratio manipulation for population control and invasive species management is also included. Next, this book provides detailed and updated information on the underlying genetic, epigenetic, endocrine and environmental mechanisms responsible for the establishment of the sexes, and explains chromosome set manipulation techniques, hybridization and the latest gene knockout approaches. Furthermore, the book offers detailed protocols and key summarizing information on how sex control is practiced worldwide in 35 major aquaculture species or groups, including fish and crustaceans, and puts the focus on its application in the aquaculture industry. With contributions from an international panel of leading scientists, Sex Control in Aquaculture will appeal to a large audience: aquaculture/fisheries professionals and students, scientists or biologists working with basic aspects of fish/shrimp biology, growth and reproductive endocrinology, genetics, molecular biology, evolutionary biology, and R&D managers and administrators. This text explores sex control technologies and monosex production of commercially-farmed fish and crustacean species that are highly in demand for aquaculture, to improve feed utilization efficiency, reduce energy consumption for reproduction and eliminate a series of problems caused by mixed sex rearing. Thus, this book: Contains contributions from an international panel of leading scientists and professionals in the field Provides comprehensive coverage of both established and new technologies to control sex ratios that are becoming more necessary to increase productivity in aquaculture Includes detailed coverage of the most effective sex control techniques used in the world's most important commercially-farmed species Sex Control in Aquaculture is the comprehensive resource for understanding the biological rationale, scientific principles and real-world practices in this exciting and expanding field.
Book Synopsis Fish Reproduction by : Maria J Rocha
Download or read book Fish Reproduction written by Maria J Rocha and published by CRC Press. This book was released on 2008-01-01 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the decline in world fish stocks, our knowledge of fish reproduction has become fundamental. Reproduction is an essential commitment to future generation. It is also a continuous development process throughout ontogeny, requiring energetic, ecological, physiological, anatomical, biochemical and endrocrinological adaptations. The first chapters highlight important issues affecting fish normal ways of reproductive development; details would focus on species living in opposite environments, such as tropical and polar fishes; far related, as teleosts and cartilaginous fishes; and finally, fish having different reproductive strategies. Thereafter, since many fishes live in detrimental environments, mainly induced by the continuous input of xenobiotic substances into waterways, the authors found it highly pertinent to include this topic. Herein, the authors fix their attention on the factors and mechanisms that may well affect reproductionrelated hormonal systems as also on known consequences for fish living i
Book Synopsis Endocrine Control of Sexual Behavior by : Carlos Beyer
Download or read book Endocrine Control of Sexual Behavior written by Carlos Beyer and published by Raven Press (ID). This book was released on 1979 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intersexuality in the Animal Kingdom by : R. Reinboth
Download or read book Intersexuality in the Animal Kingdom written by R. Reinboth and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Richard Goldschmidt' coined the term "intersexuality" in 1915, he intended it to apply to normally dioecious species which exhibit some kind of mixture between male and female characters. However, as knowledge of the bewildering variability present in the sexual orga nization of members of the animal kingdom has increased, the original meaning of the word has changed. Today many authors define inter sexuality as "the presence of both male and female characteristics, or of intermediate sexual characteristics, in a single individual".2 This more extensive and widely accepted concept justifies the title of our book •. Among all the anatomical and physiological features of living organisms the reproductive system has a unique importance for the perpetuation of the species. Conversely, reproductive processes are of little or no account for the viability of the individual. Therefore, within the framework of general biology reproduction has all too often been looked at solely from the point of view of genetics. Lively discussions about genotypic versus phenotypic sex determination long dominated the sci entific literature on sexuality in animals; this one-sided emphasis has tended to obscure many important facets of an organism's ability to reproduce. Recent developments in current biological research have brought the classic problem of sex differentiation into focus again, and the rapid progress being made in comparative endocrinology has added a new di mension to the study of reproductive biology.
Book Synopsis Evolutionary Genetics of Fishes by : Bruce Turner
Download or read book Evolutionary Genetics of Fishes written by Bruce Turner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is my hope that this collection of reviews can be profitably read by all who are interested in evolutionary biology. However, I would like to specifically target it for two disparate groups of biologists seldom men tioned in the same sentence, classical ichthyologists and molecular biologists. Since classical times, and perhaps even before, ichthyologists have stood in awe at the tremendous diversity of fishes. The bulk of effort in the field has always been directed toward understanding this diversity, i. e. , extracting from it a coherent picture of evolutionary processes and lineages. This effort has, in turn, always been overwhelmingly based upon morphological comparisons. The practical advantages of such compari sons, especially the ease with which morphological data can be had from preserved museum specimens, are manifold. But considered objectively (outside its context of "tradition"), morphological analysis alone is a poor tool for probing evolutionary processes or elucidating relationships. The concepts of "relationship" and of "evolution" are inherently genetic ones, and the genetic bases of morphological traits are seldom known in detail and frequently unknown entirely. Earlier in this century, several workers, notably Gordon, Kosswig, Schmidt, and, in his salad years, Carl Hubbs, pioneered the application of genetic techniques and modes of reasoning to ichthyology. While certain that most contemporary ichth yologists are familiar with this body of work, I am almost equally certain that few of them regard it as pertinent to their own efforts.
Book Synopsis Ecology and Evolution of Poeciliid Fishes by : Jonathan P. Evans
Download or read book Ecology and Evolution of Poeciliid Fishes written by Jonathan P. Evans and published by University of Chicago Press. This book was released on 2011-09-26 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of biology is populated by numerous model species or organisms. But few vertebrate groups have aided evolutionary and ecological research more than the live-bearing fishes of the family Poeciliidae. Found throughout tropical and subtropical waters, poeciliids exhibit a fascinating variety of reproductive specializations, including viviparity, matrotrophy, unisexual reproduction, and alternative mating strategies, making them ideal models for research on patterns and processes in ecology, behavior, and evolution. Ecology and Evolution of Poeciliid Fishes is a much-needed overview of the scientific potential and understanding of these live-bearing fishes. Chapters by leading researchers take up a wide range of topics, including the evolution of unisexual reproduction, life in extreme environments, life-history evolution, and genetics. Designed to provide a single and highly approachable reference, Ecology and Evolution of Poeciliid Fishes will appeal to students and specialists interested in all aspects of evolutionary ecology.
Book Synopsis Fish Reproductive Biology by : Tore Jakobsen
Download or read book Fish Reproductive Biology written by Tore Jakobsen and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish recruitment is a key process for maintaining sustainable fish populations. In the marine environment, fish recruitment is carried out in many different ways, all of which have different life history strategies. The objective of this book is to argue for greater linkages between basic and applied research on fisheries recruitment, and assessment and management of exploited fish stocks. Following an introductory chapter, this second edition of Fish Reproductive Biology is organized into 3 main sections: Biology, Population Dynamics and Recruitment Information Critical to Successful Assessment and Management Incorporation of Reproductive Biology and Recruitment Considerations into Management Advice and Strategies The authors collectively bring a wide range of diverse experience in areas of reproductive biology, fisheries oceanography, stock assessment, and management. Fully updated throughout, the book will be of great interest to a wide audience. It is useful as a textbook in graduate and undergraduate courses in fisheries biology, fisheries science, and fisheries resource management and will provide vital information for fish biologists, fisheries scientists and managers.
Book Synopsis Sexual Plasticity and Gametogenesis in Fishes by : Balasubramanian Senthilkumaran
Download or read book Sexual Plasticity and Gametogenesis in Fishes written by Balasubramanian Senthilkumaran and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sex determination, differentiation and gamete maturation are well organised molecular events in vertebrates. In vertebrates, sex determination and differentiation are two important events in the development of gonads (testis or ovary). Sex determination is the genetic (sex chromosomes) or environmental process by which the sex (male or female) of an individual is established. During embryonic development, primordial germ cells migrate from the site of origin to the gonadal primordia where they differentiate along with somatic cells and finally form the indifferent/bipotential gonads. Depending on the action of various factors the bipotential gonads give rise to either testis or ovaries. In most vertebrates, excluding fishes and some amphibians, the event of sex determination is controlled genetically and later the progression of gonadal development is controlled by hormones and other factors. Interestingly, these processes in fishes are controlled not only genetically but also through hormones or environmental factors. These characteristics make fish the champions of sex reversal and serve as excellent animal models to precisely understand sexual development. The next interesting aspect is meiotic maturation which is essentially mediated by gonadotropins and progesterone metabolites to trigger final gamete maturation in fishes which is different from mammals. The novel aspects pertaining to gamete maturation has been studied in great detail in fish which depicts precise regulatory events of gamete maturation.
Book Synopsis Fishes: A Guide to Their Diversity by : Philip A. Hastings
Download or read book Fishes: A Guide to Their Diversity written by Philip A. Hastings and published by Univ of California Press. This book was released on 2015-01-10 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a coursebook and reference guide for ichthyology courses that will also serve as a tool for ichthyologists, fisheries scientists, marine biologists, and vertebrate zoologists. It will cover the basic anatomy and diversity of all 62 orders of fishes, focusing on the distinguishing characteristics of approximately 180 of the most commonly encountered fish families. Each family will be diagnosed with easily observed characteristics and clear photos--many in color and from living specimens. This guide will be distinctive through the use of photographs of preserved specimens primarily from the Scripps Institution of Oceanography Marine Vertebrate Collection, supplemented by radiographs and additional illustrations of key characters. The goal is to give ichthyology students, fisheries scientists, marine biologists, vertebrate zoologists, and others with an interest or stake in the diversity of fishes a broad overview of the morphological diversity of fishes, arranged in a modern classification system. For students, it's a natural complement to primary ichthyology textbooks, which don't cover the breadth of morphological characteristics necessary to identify fish"--Provided by publisher.
Book Synopsis Fishes in Varied Reproduction and Sexuality by : Herman Tingchen Weng
Download or read book Fishes in Varied Reproduction and Sexuality written by Herman Tingchen Weng and published by . This book was released on 1982-01-01 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intersexuality in Vertebrates Including Man by : C. N. Armstrong
Download or read book Intersexuality in Vertebrates Including Man written by C. N. Armstrong and published by . This book was released on 1964 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sex Determination in Vertebrates by :
Download or read book Sex Determination in Vertebrates written by and published by Academic Press. This book was released on 2019-04-16 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sex Determination, Volume 134, the latest release in the Current Topics in Developmental Biology series, contains current reviews in the field of vertebrate sex determination. It covers molecular pathways of sex determination in genetic and environmental species and encompasses both sex determination of somatic lineages and commitment of germ cells to male or female fate. Chapters in this new release cover, amongst other topics, Mapping the Sox9 Enhancer Elements, Epigenetic Regulation of Sex Determination, Evolution and Management of Sex Chromosomes, Regulation of Germ Cell Sex Identity in Medaka, Control of Sex Determination in Zebrafish, Sexually Dimorphic Germ Cell Identity in Mammals, and more. Contains reviews written by leading experts in each field Includes informative figures that illustrate principle points that are useful for teaching Written in a style that is clear and simple
