Molecular Genetics In Fisheries

The basic principle of all molecular genetic methods is to employ inherited, discrete and stable markers to identify genotypes that characterize individuals, populations or species. Such genetic data can provide information ori the levels and distribution of genetic variability in relation to mating patterns, life history, population size, migration and environment. Although molecular tools have long been employed to address various questions in fisheries biology and management, their contributions to the field are sometimes unclear, and often controversial. Much of the initial impetus for the deployment of molecular markers arose from the desire to assess fish stock structure based on various interpretations of the stock concept. Although such studies have met with varying success, they continue to provide an impetus for the development of increasingly sensitive population discriminators, yielding information that can be valuable for both sustainable exploitation and the conservation of fish populations. In the last major synthesis of the subject, Ryman and Utter (1987) summarized progress and applications, though this was prior to the wide-scale adoption of DNA methodology. New sources of genetic markers and protocols are now available, in particular those that exploit the widely distributed and highly variable repeat sequences of DNA, and the amplification technique of the polymerase chain reaction.

The basic principle of all molecular genetic methods is to employ inherited, discrete and stable markers to identify genotypes that characterize individuals, populations or species. Such genetic data can provide information ori the levels and distribution of genetic variability in relation to mating patterns, life history, population size, migration and environment. Although molecular tools have long been employed to address various questions in fisheries biology and management, their contributions to the field are sometimes unclear, and often controversial. Much of the initial impetus for the deployment of molecular markers arose from the desire to assess fish stock structure based on various interpretations of the stock concept. Although such studies have met with varying success, they continue to provide an impetus for the development of increasingly sensitive population discriminators, yielding information that can be valuable for both sustainable exploitation and the conservation of fish populations. In the last major synthesis of the subject, Ryman and Utter (1987) summarized progress and applications, though this was prior to the wide-scale adoption of DNA methodology. New sources of genetic markers and protocols are now available, in particular those that exploit the widely distributed and highly variable repeat sequences of DNA, and the amplification technique of the polymerase chain reaction.

Following the extremely well-received structure of the firstedition, this carefully revised and updated new edition nowincludes much new information of vital importance to those workingand researching in the fisheries and aquaculture industries. Commencing with chapters covering genetic variation and how itcan be measured, the authors then look at genetic structure innatural populations, followed by a new chapter covering genetics inrelation to population size and conservation issues. Geneticvariation of traits and triploids and the manipulation of ploidyare fully covered, and another new chapter is included, entitled'From Genetics to Genomics'. The book concludes with a chaptercovering the impact of genetic engineering in aquaculture. With the inclusion of a wealth of up-to-date information, newtext and figures and the inclusion of a third author, PierreBoudry, the second edition of Biotechnology and Genetics inFisheries and Aquaculture provides an excellent text andreference of great value and use to upper level students andprofessionals working across fish biology, aquatic sciences,fisheries, aquaculture, genetics and biotechnology. Libraries inall universities and research establishments where biologicalsciences, fisheries and aquaculture are studied and taught shouldhave several copies of this excellent new edition on theirshelves. Completely updated, revised and expanded new edition Subject area of ever increasing importance Expanded authorship Commercially useful information for fish breeders

Cellular and Molecular Approaches in Fish Biology is a highly interdisciplinary resource to bring industry professionals, students and researchers up-to-date with the latest developments and information on fish biology research combining a historical overview of the different research areas in fish biology and detailed descriptions of cellular and molecular approaches with explanations and recommendations for research. The book presents a global perspective of each research area with detailed analytical methodologies on the cellular and molecular mechanisms within fish biology for expermentation. The book provides different points of view on how researchers have addressed timely issues, while describing and dissecting some of the new experimental/analytical approaches used to answer the key questions at cellular and molecular levels, making this a valuable resource to those in industry and academia as well as those entering the field. Provides detailed descriptions of each research approach, highlighting the tricks of the trade for its effective and successful application Includes the latest developments in fish reproduction, fish development and nutrition, fish welfare, fish immunology, ecology and biomedics Presents hot topics of research such as genetics, transcriptomics and epigenetics

The genetic improvement of fish for aquaculture and related fisheries has seen huge advances over recent years. Building upon the previous two editions of Aquaculture and Fisheries Biotechnology: Genetic Approaches, this 3rd edition offers a presentation of traditional selective breeding, modern genetic biotechnology, genomics, gene transfer and gene editing, and the latest developments in genetic biotechnology such as epigenetics, xenogenesis and genome-wide association study coupled with commercial application, the impact of government regulation and expectations for the future. It provides a firm grounding in relevant aspects of classical genetics, before focusing on particular aspects such as sex reversal and breeding as applied in aquaculture and fisheries. It also explores how more recent molecular genetics, genomics and biotechnology techniques can be used and combined in improvement programmes for fish and aquaculture species. A glossary explains the latest terminology used in biotechnology and genetics. This book will be useful for research scientists and students in marine biotechnology, aquaculture biotechnology, and fish genetics and breeding.

Biotechnology is a technique that used living organisms to create and amend a product, to develop plants and animals or to develop micro-organisms for explicit uses. Biotechnological means of genetic improvement is a modern and faster approach. Genome manipulations (Chromosomal Engineering) and gene transfer (Genetic Engineering) have been experimentally studied throughout past in many countries. To date genetic progress in livestock breeding programmes has relied whichever on breed exchange or leading the conventional quantitative genetic approach of testing and selection. Under these circumstances the need to develop new technologies became imperative unlike in agriculture and veterinary farming exploitation of genetic potentials and utilisation of genetically improved cultured varieties of fish is not a common practice in aquaculture all most all species of fish are genetically improved to the traditional selective reading and hybridisation methods. Aquaculture is multidisciplinary activity. This book overviews Fishes and related biotechnology techniques. Reading this book will be beneficial for students of fisheries, researchers in this field and entrepreneurs.

"List of Fish Taxa -- Preface -- Introduction -- An Overview of Classical and Molecular Genetics -- Measurement of Genetic Variation -- Allozyme Variation -- Chromosomal Variation -- Mitochondrial DNA -- Nuclear DNA -- Population GeneticProcesses -- Natural Selection -- Random Genetic Drift -- Inbreeding -- Coadaptation and Outbreeding Depression -- Quantitative Genetics -- Practical Applications of Population Genetics -- Genetic Stock Identification and Risk Assessment -- Genetic Guidelines for Hatchery Supplementation Programs --Genetic Impacts of Fish Introductions --Genetic Marking -- Forensics -- Population Viability Analysis --Glossary - Index"--P. v.