Ronald J. Roberts – författare

At present, the supply of eggs and fry is one of the major constraints on future aquaculture development. For the majority of farmed species, production is totally dependent on harvesting of broodstocks or seed from wild populations At present we know little about the control of reproduction of most farmed finfish nor of the detailed nutrient, metabolic and husbandry requirements of the broodstock or the ways in which they might be managed to optimize seed production and improve the quality of eggs and larvae. Newer technologies such as ploidy and gender manipulation, induced spawning and cryopreservation are coming to the forefront of modern broodstock management and all of these topics are considered, in detail, in this new text. Broodstock Management and Egg and Larval Quality has been written as a standard text for commercial practitioners and students of aquaculture, fish biology and fisheries and provides a comprehensive review of current and future methods of broodstock and hatchery management. The range of marine and freshwater tropical and temperate finfish species considered, together with contributions from many of the world's most eminent fish biologists, provide comprehensive and international coverage of this increasingly important area of aquaculture.

Fish Pathology is the definitive, classic and essential book on the subject, providing in-depth coverage across all major aspects of fish pathology. This new, fully updated and expanded fourth edition builds upon the success of the previous editions which have made Fish Pathology the best known and most respected book in the field, worldwide.Commencing with a chapter covering the aquatic environment, the book provides comprehensive details of the anatomy and physiology of teleosts, pathophysiology and sytematic physiology, immunology, neoplasia, virology, parasitology, bacteriology, mycology, nutritional pathology and other non-infectious diseases. A final chapter provides extremely useful details of the most widely-used and trusted laboratory methods in the area. Much new infomation is included in this new edition, including enhanced coverage of any diseases which have become commercially significant since publication of the previous editionBeautifully illustrated in full colour throughout with many exceptional photographs, Fish Pathology, Fourth Edition, is an essential purchase for fish pathologists, fish veterinarians, biologists, microbiologists and immunologists, including all those working in diagnostic services worldwide. Personnel working in fish farming and fisheries will also find much of great use and interest within the book's covers. All libraries in universities and research establishments where biological and veterinary sciences are studied and taught should have copies of this landmark publication on their shelves.

It is a tribute to the vigour of research and development in aquaculture that we are able, in a relatively short time, to provide readers with a second volume in this series, which has such a diversity of high calibre research and developments to report. That the first volume was so well received has been a source of great satisfaction to the editors and supported their conviction as to the need for links to join the research laboratory to the fish farm by making current research available to a wider range of potential users. In this volume. we have changed the balance somewhat towards more specialised subject areas. We make no apology for this. as the modern aquaculture professional is concerned with a wide range of specialisms within the broader content of management and production, and there is every need to present such work in an acceptable format. Furthermore many of these specialised topics have a significance right across the range of production, are often economically criticaL and are therefore of con­ siderable and widespread importance. The first contribution. by Dr Derek Robertson, manager of the Institute of Aquaculture's Howietoun Fish Farm, covers just such a subject.

Bacterial diseases are among the most important causes of losses among fish stocks. A full understanding of the aetiological agent, the pathogenesis, biochemistry, antigenicity, epizootiology and the inter-relationship of stress-related and environmental factors is essential for successful management and control. This book, which has been written as a standard text for students of aquaculture, veterinarians and microbiologists, brings these aspects together and reflects current international practices and incidence.