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Books > Professional & Technical > Agriculture & farming > Aquaculture & fishing: practice & techniques

The Ocean Sunfishes - Evolution, Biology and Conservation (Hardcover): Tierney M. Thys, Graeme C. Hays, Jonathan D. R. Houghton The Ocean Sunfishes - Evolution, Biology and Conservation (Hardcover)
Tierney M. Thys, Graeme C. Hays, Jonathan D. R. Houghton
R5,476 Discovery Miles 54 760 Ships in 10 - 15 working days

The Ocean Sunfishes: Evolution, Biology and Conservation is the first book to gather into one comprehensive volume our fundamental knowledge of the world-record holding, charismatic ocean behemoths in the family Molidae. From evolution and phylogeny to biotoxins, biomechanics, parasites, husbandry and popular culture, it outlines recent and future research from leading sunfish experts worldwide This synthesis includes diet, foraging behavior, migration and fisheries bycatch and overhauls long-standing and outdated perceptions. This book provides the essential go-to resource for both lay and academic audiences alike and anyone interested in exploring one of the ocean's most elusive and captivating group of fishes.

Tropical Marine Mollusks - An Illustrated Biogeographical Guide (Hardcover): Edward J. Petuch, David P. Berschauer Tropical Marine Mollusks - An Illustrated Biogeographical Guide (Hardcover)
Edward J. Petuch, David P. Berschauer
R5,273 Discovery Miles 52 730 Ships in 10 - 15 working days

Marine biogeography, the study of the spatial distribution of organisms in the world's oceans, is one of the most fascinating branches of oceanography. This book continues the pioneering research into the distributions of molluscan faunas, first studied by biologists over 160 years ago. It illustrates 1778 species of gastropods in full color, many of which are extremely rare and poorly known endemic species that are illustrated for the first time outside of their original descriptions. The spatial arrangements of malacofaunas shown in this book can be considered proxies for worldwide oceanic conditions and used as tools for determining patterns of global climate change. The book's documentation of evolutionary "hot spots" and geographically restricted endemic faunas can also be used as a base line for future studies on patterns of environmental deterioration and extinction in the marine biosphere. Documenting the evolution of the amazingly rich worldwide gastropod fauna, this book will appeal to physical and chemical oceanographers, systematic and evolutionary biologists, historical geologists, paleontologists, climatologists, geomorphologists, and physical geographers. The authors incorporate aspects of all of these disciplines into a new classification system for the nomenclature of biogeographical spatial units found in tropical, subtropical, and warm temperate seas.

Fisheries Economics, Volume I - Collected Essays (Paperback): Lee G Anderson Fisheries Economics, Volume I - Collected Essays (Paperback)
Lee G Anderson
R1,717 Discovery Miles 17 170 Ships in 10 - 15 working days

This title was first published in 2002: This important collection of international research on fisheries economics offers a comprehensive source of contemporary research on key topics in the field, as well as presenting the history of how the economic theory of fisheries exploitation has developed. Bringing into focus a wide range of inquiry, this volume concentrates most particularly on the traditional economic problem of optimal resource allocation. Individual papers examine fundamental issues including, the lack of efficiency of open access and the specification of exactly what dynamic efficiency entails. Fisheries Economics is an invaluable research reference collection for the libraries of academic and other professional economists, as well as an indispensable resource for those studying across the fields of natural resources, fisheries economics and particularly fisheries management.

Marine Biomedicine - From Beach to Bedside (Paperback): Bill J. Baker Marine Biomedicine - From Beach to Bedside (Paperback)
Bill J. Baker
R1,518 Discovery Miles 15 180 Ships in 10 - 15 working days

Marine Biomedicine: From Beach to Bedside assesses current efforts in marine biomedicine and evaluates the implications of recent advances on the future of the field. Richly illustrated in full color to enhance reader comprehension, the book covers four sections. The first one addresses the technology that has recently been brought to bear on the study of marine natural products, including omics and bioinformatic techniques. The second focuses on lead discovery and reviews various products and their biomedical potential. Examples of clinically successful marine products and discussions of approaches to the clinic are presented in the third section while the last section discusses prospects for the future of marine biodiscovery. Highlighting new technologies, this valuable resource provides an overview of both what is currently possible in the field as well as a detailed look at what is being done in marine natural products research.

The Politics of Aquaculture - Sustainability Interdependence, Territory and Regulation in Fish Farming (Paperback): Caitriona... The Politics of Aquaculture - Sustainability Interdependence, Territory and Regulation in Fish Farming (Paperback)
Caitriona Carter
R1,348 Discovery Miles 13 480 Ships in 10 - 15 working days

Aquaculture is increasingly complementing global fisheries and is relevant to ocean and freshwater health, biodiversity and food security, as well as coastal management, tourism and natural heritage. This book makes the case for treating the governance of this industry as meriting attention in its own right, abandoning the polemic discussions of fish farming and opening up new ways for debating its past, present and future. Developing and applying an original analytical framework for studying fish farming aquaculture, embedded into larger theory about the changing political system, the author generates and compares new data on the governance of aquaculture. Detailed case studies are presented of Scottish salmon, Aquitaine trout in France and seabass and seabream in Greece. The book shows how ecological issues are related to economic and social issues, as well as interdependences between territories, public and private regulation and different knowledge forms, demonstrating that these are creating alternative approaches for sustainability governance. It provides a deeper understanding of the political aspects of governing European aquaculture, including how it both is structured by and is structuring politics. It is aimed at advanced students, researchers and professionals in aquaculture and fisheries, as well as those with a broader interest in sustainability politics and sustainability governing practices.

Fish Catching Methods of the World 4e (Hardcover, 4th Edition): O Gabriel Fish Catching Methods of the World 4e (Hardcover, 4th Edition)
O Gabriel
R5,817 Discovery Miles 58 170 Ships in 10 - 15 working days

In the sixteen years since the last edition of Von Brant's classic work was published, fishing and fisheries have undergone vast changes. Not only has there been great progress in the development of new tools, materials and techniques, but the industry has seen an increasing need to address controversial issues such as declining fish stocks, enormous quantities of bycatch and discard and the impact of towed fishing gear on the environment. Fully revised and updated to reflect such changes, the fourth edition of this widely read and popular book offers:


A unique, comprehensive survey of the evolution of fishing methods throughout the world
Approximately 750 illustrations showing the extensive range of methods, techniques and equipment used in fishing across the globe
Fishing gear classified according to the FAO system
Additional chapters: Fishing Effects on Fish Stocks and Environment and Fishery and Gear Research


All researchers, fisheries scientists, fisheries students, administrators and libraries in universities and research establishments where fish and fisheries are studied and taught will find this book a valuable addition to their shelves. Commercial and sports fishermen will also find Fish Catching Methods of the World a fascinating and vital reference.

Coral Reef Restoration Handbook (Hardcover, annotated edition): William F Precht Coral Reef Restoration Handbook (Hardcover, annotated edition)
William F Precht
R5,223 Discovery Miles 52 230 Ships in 10 - 15 working days

"... this book is the first to describe, in detail, the art and science of coral reef restoration. It is to be hoped that the information that can be gleaned within the pages of this book will set a path towards continued preservation of this valuable underwater treasure to be used, appreciated, and experienced for future generations." -- Senator Bob Graham (retired), Miami Lakes, Florida, from the Foreword Most of what we know about the rehabilitation of coral reef systems stems from efforts to repair reefs injured by vessels that have run aground. To date, however, there is a paucity of published literature regarding the efficacy and/or failure of coral reef restoration techniques. While most of the literature that is available comes from meeting abstracts, workshops and technical memoranda, these papers and reports have forged a scientific framework that can help guide future efforts. The Coral Reef Restoration Handbook is the first published volume devoted to the science of coral reef restoration. It offers a scientific, conceptual framework along with practical strategies for reef assessment and restoration. Contributors from a variety of disciplines discuss engineering, geological, biological, and socioeconomic factors to create a text that is designed to guide scientists and resource managers in the decision-making process from initial assessment of the injury through conceptual restoration design, implementation, and monitoring. An excellent selection of relevant case studies is utilized to illustrate concepts and challenges inherent in the process of restoration. This volume gives reef scientists and managers the opportunity to glean significant information from previous efforts. It provides them with the opportunity to build on the lessons learned and develop successful restoration efforts into the future.

Shark Research - Emerging Technologies and Applications for the Field and Laboratory (Paperback): Jeffrey C. Carrier, Michael R... Shark Research - Emerging Technologies and Applications for the Field and Laboratory (Paperback)
Jeffrey C. Carrier, Michael R Heithaus, Colin A Simpfendorfer
R1,490 Discovery Miles 14 900 Ships in 10 - 15 working days

Over the last decade, the study of shark biology has benefited from the development, refinement, and rapid expansion of novel techniques and advances in technology. These have given new insight into the fields of shark genetics, feeding, foraging, bioenergetics, imaging, age and growth, movement, migration, habitat preference, and habitat use. This pioneering book, written by experts in shark biology, examines technologies such as autonomous vehicle tracking, underwater video approaches, molecular genetics techniques, and accelerometry, among many others. Each detailed chapter offers new insights and promises for future studies of elasmobranch biology, provides an overview of appropriate uses of each technique, and can be readily extended to other aquatic fish and marine mammals and reptiles. Including chapter authors who were pioneers in developing some of the technologies discussed in the book, this book serves as the first single-source reference with in-depth coverage of techniques appropriate for the laboratory and field study of sharks, skates, and rays. It concludes with a unique section on Citizen Science and its application to studies of shark biology. This is a must-read for any marine biologist or scientist working in the field of shark biology, as well as marine biology students and graduates.

Coastal and Deep Ocean Pollution (Hardcover): Andres Hugo Arias, Sandra Elizabeth Botte Coastal and Deep Ocean Pollution (Hardcover)
Andres Hugo Arias, Sandra Elizabeth Botte
R5,084 Discovery Miles 50 840 Ships in 10 - 15 working days

During the recent decades, social, political and academic endeavours have been made to improve environmental quality and reduce pollution. In particular, the ocean, sea and coastal areas show varying degrees of impact from the multiple human activities carried out in the terrestrial as well as in the aquatic environment. Ecology is a science which studies the relationship between organisms and the surrounding environment and in the modern era, the marine world is getting increasing attention. For centuries it has been the final reservoir of human garbage; later it became an oil farm with a concomitant increase of coastal population growth and unplanned growth of the fishing industry and the increasing use of sea routes for cargo transport and recreational uses (cruises). All this led to rising contamination with negative effects on biota and even human health. It is then imperative to know the current situation of the world's oceans: that is the main purpose of this book, to document at a glance the latest research in the field of ocean pollution.

Practical Understanding Of Water Quality In Shrimp Aquaculture (Hardcover): R Dinesh Practical Understanding Of Water Quality In Shrimp Aquaculture (Hardcover)
R Dinesh
R2,306 Discovery Miles 23 060 Ships in 10 - 15 working days
Extremophiles - From Biology to Biotechnology (Paperback): Ravi V. Durvasula, D.V. Subba Rao Extremophiles - From Biology to Biotechnology (Paperback)
Ravi V. Durvasula, D.V. Subba Rao
R1,581 Discovery Miles 15 810 Ships in 10 - 15 working days

Highly recommended by CHOICE, Oct 2018 Extremophiles are nature's ultimate survivors, thriving in environments ranging from the frozen Antarctic to abyssal hot hydrothermal vents. Their lifeforms span bacteria to fishes, and are categorized as halophiles from hypersaline environments, acidophiles from acidic waters, psychrophiles from cold habitats, and thermophiles from warm waters. Extremophiles: From Biology to Biotechnology comprehensively covers the basic biology, physiology, habitats, secondary metabolites for bioprospecting, and biotechnology of these extreme survivors. The chapters focus on the novel genetic and biochemical traits that lend these organisms to biotechnological applications. Couples studies of marine extremophile biology/genomics and extremophile culture for biotechnological applications with the latest advances in bio-prospecting and bio-product development Includes practical experiments that a laboratory can use to replicate extreme habitats for research purposes Presents latest advances in extremophile genomics to give the reader a better understanding of the regulatory mechanisms of extremophiles Offers insights into the production of commercially important extremozymes, carotenoids, bioactive compounds and secondary metabolites of medicinal value. This unique guide serves as a resource for biotechnologists who wish to explore extremophiles for their commercial potential, as well as a valuable reference for teaching undergraduate, graduate and postgraduate students.

Stock Enhancement and Sea Ranching - Developments,  Pitfalls and Opportunities 2e (Hardcover, 2nd Edition): KM Leber Stock Enhancement and Sea Ranching - Developments, Pitfalls and Opportunities 2e (Hardcover, 2nd Edition)
KM Leber
R6,356 Discovery Miles 63 560 Ships in 10 - 15 working days

The collapse of many of the World's fisheries continues to be of major concern and the enhancement of fish stocks through techniques such as ranching is of huge importance and interest across the globe. This important book, which contains fully peer reviewed and carefully edited papers from the 2nd International Symposium in Stock Enhancement and Sea Ranching is broadly divided into sections covering the following areas:


The present situation of stock enhancement
Seed quality and techniques for effective stocking
Health management of hatchery stocks
Methods for evaluating stocking effectiveness
Population management in stock enhancement and sea ranching
Management of stocked populations
Ecological interactions with wild stocks
Genetic management of hatchery and wild stocks
Socio-economics of stock enhancement
Case studies


"Stock Enhancement and Sea Ranching" has been written and edited by some of the world's foremost authorities in fisheries science and related areas and is essential reading for all fisheries scientists throughout the World. Fish biologists, marine and aquatic scientists, environmental biologists, ecologists, conservationists, aquaculture personnel and oceanographers will all find much of use and interest within this book. All libraries within universities and research establishments where these subjects are studied and taught should have copies of this book on their shelves.

The Arctic - Environment, People, Policy (Hardcover): Jack D Ives, Roger G. Barry The Arctic - Environment, People, Policy (Hardcover)
Jack D Ives, Roger G. Barry
R6,322 Discovery Miles 63 220 Ships in 10 - 15 working days

Originally published in 2000, The Arctic provides a comprehensive overview of the region's rapidly changing physical and human dimensions, and demonstrates the importance of communication between natural scientists, social scientists, and local stakeholders in response to the tremendous challenges and opportunities facing the Arctic. It is an essential resource for all Arctic researchers, particularly those developing multidisciplinary projects. It provides an overview of key areas of Arctic research by renowned specialists in the field, and each chapter forms a detailed, varied and accessible account of current knowledge. Each author introduces the subject to a specialist readership, while retaining intellectual integrity and relevance for specialists. Overall, the richness of the material presented in this volume reflects the ecological and cultural diversity of this vast and environmentally critical part of the globe.

Oyster Culture (Hardcover): Matthiessen Oyster Culture (Hardcover)
Matthiessen
R3,965 Discovery Miles 39 650 Ships in 10 - 15 working days

The oyster trade worldwide is of huge commercial importance, and the demand for high quality oysters is rising all the time. With wild stocks depleted, the ever-increasing multi-million dollar oyster farming industry is serving this demand.

"Oyster Culture" is a thorough review of the subject, providing a huge wealth of practical and commercially vital information of importance to all those involved in this expanding industry.

Based on a lifetime's work in the industry, George Matthiessen has written a much-needed and comprehensive book covering all major aspects of the subject. The book covers the biology, distribution, husbandry and disease of cultured oysters and looks in detail at recent developments in oyster culture as well as considering the limits to oyster production. Separate chapters deal in detail with a) oyster culture in the Far East, the Indo-Pacific Region, Western Europe, North America and tropical areas and b) a history of production methods by a New England-based oyster company.

This important book will be a vital tool and reference work for all those involved in the culture of oysters, including oyster farm managers and workers; biologists working on oysters and other bivalve shellfish and invertebrates; regulatory personnel and all those serving the industry, including personnel in aquaculture equipment and feed companies. Copies of the book should also be available in libraries of universities, research establishments and government laboratories where aquaculture is studied or taught.

George C. Matthiessen PhD, has for 30 years been President of Ocean Pond Corporation, Fishers Island, New York, U.S.A.

Behavioural Ecology of Fishes (Paperback): Felicity Anne Huntingford Behavioural Ecology of Fishes (Paperback)
Felicity Anne Huntingford
R1,876 Discovery Miles 18 760 Ships in 10 - 15 working days

This volume is based on the proceedings of a conference held in Sicily, in October 1991. It illustrates the developments in the field of behavioural ecology using fishes, with new or more sophisticated ideas and techniques that offer the potential of powerful analyses of selection on behaviour.

Biology and Evolution of the Mollusca, Volume 1 (Hardcover): David R Lindberg, Winston Frank Ponder, Juliet Mary Ponder Biology and Evolution of the Mollusca, Volume 1 (Hardcover)
David R Lindberg, Winston Frank Ponder, Juliet Mary Ponder
R6,529 Discovery Miles 65 290 Ships in 10 - 15 working days

Molluscs comprise the second largest phylum of animals (after arthropods), occurring in virtually all habitats. Some are commercially important, a few are pests and some carry diseases, while many non-marine molluscs are threatened by human impacts which have resulted in more extinctions than all tetrapod vertebrates combined. This book and its companion volume provide the first comprehensive account of the Mollusca in decades. Illustrated with hundreds of colour figures, it reviews molluscan biology, genomics, anatomy, physiology, fossil history, phylogeny and classification. This volume includes general chapters drawn from extensive and diverse literature on the anatomy and physiology of their structure, movement, reproduction, feeding, digestion, excretion, respiration, nervous system and sense organs. Other chapters review the natural history (including ecology) of molluscs, their interactions with humans, and assess research on the group. Key features of both volumes: up to date treatment with an extensive bibliography; thoroughly examines the current understanding of molluscan anatomy, physiology and development; reviews fossil history and phylogenetics; overviews ecology and economic values; and summarises research activity and suggests future directions for investigation. Winston F Ponder was a Principal Research Scientist at The Australian Museum in Sydney where he is currently a Research Fellow. He has published extensively over the last 55 years on the systematics, evolution, biology and conservation of marine and freshwater molluscs, as well as supervised post graduate students and run university courses. David R. Lindberg is former Chair of the Department of Integrative Biology, Director of the Museum of Paleontology, and Chair of the Berkeley Natural History Museums, all at the University of California. He has conducted research on the evolutionary history of marine organisms and their habitats on the rocky shores of the Pacific Rim for more than 40 years. The numerous elegant and interpretive illustrations were produced by Juliet Ponder.

Cenozoic Seas - The View From Eastern North America (Hardcover): Edward J. Petuch Cenozoic Seas - The View From Eastern North America (Hardcover)
Edward J. Petuch
R7,192 Discovery Miles 71 920 Ships in 10 - 15 working days

The rich fossil record of the Atlantic and Gulf coastal plains of the United States is a gold mine for interested scientists. The last thirty million years of Earth history are superbly chronicled by a succession of fossil assemblages extending from the St. Lawrence River to Florida. Marine scientists, paleontologists, and systematic biologists alike need a thorough guide to interpret this history.

Cenozoic Seas: The View from Eastern North America analyzes the changing geography, the arrival and departures of ecosystems and species, and the affect of climate on living things. The author classifies all of the region's fossil-bearing formations and their contents within a logical, descriptive framework of space and time, providing a clear path for those studying evolution and extinction within specific communities of organisms.

The book is also an excellent field guide for fossil collectors, providing detailed information for all species illustrated. Many organisms have never before been illustrated in a book on fossil shells.

Terrestrial Environments (Hardcover): J.L. Cloudsley-Thompson Terrestrial Environments (Hardcover)
J.L. Cloudsley-Thompson
R3,233 Discovery Miles 32 330 Ships in 10 - 15 working days

Originally published in 1975 Terrestrial Environments covers the zoogeography and ecology of the main terrestrial environments of the world, including fresh water habitats with emphasis on their fauna. The book also explores climate and vegetation in so far as they affect animal life. Finally, the selective influence of the environment on its fauna is discussed and, conversely, the influence of regulation, a synthesis of these interrelations. Morphological adaptations of the animals inhabiting various types of terrestrial environments are considered in relation to locomotion, feeding, and escape from enemies. Physiological adaptations are also mentioned briefly, and the adaptative importunate of diurnal and seasonal rhythms is stressed.

Sustainable Aquaculture - Global Perspectives (Paperback): Carl D Webster, Bana B. Jana Sustainable Aquaculture - Global Perspectives (Paperback)
Carl D Webster, Bana B. Jana
R1,938 Discovery Miles 19 380 Ships in 10 - 15 working days

Examine the world's leading aquaculture producers! Sustainable Aquaculture: Global Perspectives is a one-of-a-kind primer on the world's leading sources of aquatic production, presenting expert commentary that includes the latest advancements, developments, and research findings. The book examines essential elements of aquaculture (water quality, nutrition, genetics, culture methods) and addresses problems such as over-fishing, coastal and wetland destruction, and habitat and environmental degradation. Sustainable Aquaculture: Global Perspectives addresses policy measures that are essential for the long-term sustainability of the world's fisheriesand the long-term employment of those who rely on the aquaculture industry for their livelihood. As the world's population increases at an alarming rate, the question of how to ensure global food security is one of extreme importance. But the world's total yield is below expectations and the book examines the reasons why: the under-utilization of natural resources, the lack of adoption of modern scientific methods, the lack of standardized, proven pond fertilization protocols; long-term inbreeding and the loss of genetic variability due to genetic drift. Sustainable Aquaculture: Global Perspectives also addresses: freshwater pearl culture breeding programs pond fertilization regimes fish diseases in tropical climates indoor recirculating culture systems water quality management for shrimp farming and much more! With much of its information available in one place for the first time, Sustainable Aquaculture: Global Perspectives is invaluable as a textbook for introductory aquaculture courses and is an essential resource for professionals and researchers.

Fisheries Economics, Volume II - Collected Essays (Hardcover): Lee G Anderson Fisheries Economics, Volume II - Collected Essays (Hardcover)
Lee G Anderson
R4,240 Discovery Miles 42 400 Ships in 10 - 15 working days

This title was first published in 2002: This important collection of international research on fisheries economics offers a comprehensive source of contemporary research on key topics in the field, as well as presenting the history of how the economic theory of fisheries exploitation has developed. Bringing into focus a wide range of inquiry, this second volume concentrates on extensions, analysis of management agencies and applications. Individual papers examine fundamental issues including, multispecies models, international utilization and recreational fisheries. Fisheries Economics is an invaluable research reference collection for the libraries of academic and other professional economists, as well as an indispensable resource for those studying across the fields of natural resources, fisheries economics and particularly fisheries management.

Sustainable Aquaculture - Global Perspectives (Hardcover): Carl D Webster, Bana B. Jana Sustainable Aquaculture - Global Perspectives (Hardcover)
Carl D Webster, Bana B. Jana
R3,381 Discovery Miles 33 810 Ships in 10 - 15 working days

Examine the world's leading aquaculture producers! Sustainable Aquaculture: Global Perspectives is a one-of-a-kind primer on the world's leading sources of aquatic production, presenting expert commentary that includes the latest advancements, developments, and research findings. The book examines essential elements of aquaculture (water quality, nutrition, genetics, culture methods) and addresses problems such as over-fishing, coastal and wetland destruction, and habitat and environmental degradation. Sustainable Aquaculture: Global Perspectives addresses policy measures that are essential for the long-term sustainability of the world's fisheriesand the long-term employment of those who rely on the aquaculture industry for their livelihood. As the world's population increases at an alarming rate, the question of how to ensure global food security is one of extreme importance. But the world's total yield is below expectations and the book examines the reasons why: the under-utilization of natural resources, the lack of adoption of modern scientific methods, the lack of standardized, proven pond fertilization protocols; long-term inbreeding and the loss of genetic variability due to genetic drift. Sustainable Aquaculture: Global Perspectives also addresses: freshwater pearl culture breeding programs pond fertilization regimes fish diseases in tropical climates indoor recirculating culture systems water quality management for shrimp farming and much more! With much of its information available in one place for the first time, Sustainable Aquaculture: Global Perspectives is invaluable as a textbook for introductory aquaculture courses and is an essential resource for professionals and researchers.

Sea Bass and Sea Bream - A Practical Approach to Disease Control and Health Management (Hardcover): Pierpaolo Patarnello,... Sea Bass and Sea Bream - A Practical Approach to Disease Control and Health Management (Hardcover)
Pierpaolo Patarnello, Niccolo Vendramin
R2,180 R1,996 Discovery Miles 19 960 Save R184 (8%) Ships in 10 - 15 working days

The aim of this book is to provide practical advice and awareness of health management and disease control in sea bass and sea bream, the most widely-farmed fish in the Mediterranean region. The prevention and control of the main pathologies affecting intensively-cultured marine fish species are of paramount importance. Farmed sea bass and sea bream are high-value fish, making significant contributions to the economies of many countries. This important book gives particular emphasis to rapid diagnosis and response to the most dangerous pathologies, which can cause severe economic losses in affected fish farms.Key features of the book Sea Bass and Sea Bream include: A clear layout and practical approach: easy to understand and implement; colour photographs of the main diseases and parasites affecting sea bass and sea bream; a combination of the authors' wide field-based experience in the diagnosis of fish diseases, with knowledge from a major fish diseases reference laboratory.This book is an essential purchase for fish farm operatives and managers, veterinarians, fish health managers and inspectors, consultants, fish pathologists, microbiologists and parasitologists.Personnel within companies supplying the aquaculture industry with pharmaceuticals and vaccines, feed, and technical equipment will find a wealth of useful information within this book. Libraries in all universities and establishments teaching and researching aquaculture, veterinary studies, fish biology, microbiology, pathology and parasitology should have copies of this important book on their shelves.

Limnology, Climatology and Paleoclimatology of the East African Lakes (Paperback): Thomas C. Johnson, Eric O. Odada Limnology, Climatology and Paleoclimatology of the East African Lakes (Paperback)
Thomas C. Johnson, Eric O. Odada
R1,920 Discovery Miles 19 200 Ships in 10 - 15 working days

The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.

Trawling - The Rise and Fall of the British Trawl Fishery (Paperback, New Ed): Robb Robinson Trawling - The Rise and Fall of the British Trawl Fishery (Paperback, New Ed)
Robb Robinson
R1,045 Discovery Miles 10 450 Ships in 10 - 15 working days

A distinct branch of the multi-faceted fishing industry, trawling dates back at least to the 1370s when attempts were made to prohibit the use of a primitive trawling device, the 'wondyrychoun' on the Thames. But it was not until the late 18th century that the beam trawl was deployed to any great extent, the fishermen of Barking and Brixham claiming credit for pioneering the technique. Thereafter, particularly from the 1840s, trawling eclipsed seining, drifting and line fishing as the principal method of capture, a transition which not only underpinned the growth of east coast fishing stations such as Hull and Grimsby, but also explained Britain's emergence as the largest and most successful of Europe's fishing nations. The rapid adoption of the steam trawler in the 1880s confirmed these trends and facilitated the exploitation of more distant fishing grounds. Two World Wars, a series of Cod Wars and intense foreign competition have eroded Britain's pre-eminence in the 20th century, so much so that by the early 1990s her interests in distant water trawling were negligible. The author adopts a largely chronological approach to chart the rise and fall of trawling in Britain. Using an array of primary sources, he identifies the key factors - growing demand, links with markets, technological change, political rivalries - which have conditioned the performance of the trawling business. A number of themes permeate the work, including the life and working conditions of the trawlermen, the place of trawling in the fishing industry at large, attitudes to the conservation of fish stocks and the role of government in the prosecution and prosperity of the trawl fishery. In dealing with such issues, the book provides a well balanced, thoroughly researched account of a vital arm of Britain's 19th and 20th century fishing industry.

Practical Genetics for Aquaculture (Hardcover): C. G. Lutz Practical Genetics for Aquaculture (Hardcover)
C. G. Lutz
R3,476 Discovery Miles 34 760 Ships in 10 - 15 working days

Over recent years there have been major advances in the application of molecular, biotechnological and genetic techniques to a wide range of aquatic species. Until now, many working in a hands-on capacity in the area of aquaculture have not known what the benefits of this work could be to them. This important new book redresses this situation, providing clear details of the available scientific information and the direct application of techniques under simple and practical situations.

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