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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 136
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 136
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Author: Miroslaw Luczynski
Publisher: E. Schweizerbartsche Verlagsbuchhandlung
ISBN:
Category : Science
Languages : en
Pages : 508
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Book Description
Coregonid fishes are an interesting and important group of freshwater and anadromous fishes. Coregonids are highly adaptable to diverse environmental conditions and are widely distributed throughout the Holarctic. They support substantial commercial, subsistence, and recreational fisheries. Also, Coregonid fishes are the basis of aquaculture operations in some countries and rearing techniques are important for aquaculture and for sustaining and augmenting natural populations. Coregonids are fascinating subjects for the study of evolutionary and zoogeographic problems. These fishes are also useful in the study of general fish biology and interspecific interactions. This volume contains the proceedings of the Fifth International Symposium on the Biology and Management of Coregonid Fishes. The objectives of the symposium were to address all aspects of biology, genetics, aquaculture and management of coregonid fishes, throughout their entire geographic range. The conference themes were: biology, life history and population dynamics; genetics and systematics; aquaculture; fisheries and fisheries management and human interventions.
Author: John W. Tucker Jr.
Publisher: Springer Science & Business Media
ISBN: 1461549116
Category : Science
Languages : en
Pages : 755
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4 Water Sources ........................................ 149 Criteria ............................................. 149 Major types .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 . . . . . . . . . . . . Summary ............................................ 152 5 Water Treatment ...................................... 155 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 . . . . . . . . . . . . Materials ............................................ 155 Treatment options . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 . . . . . . . . . . . System design ........................................ 169 System monitoring and control . . . . . . . . . . . . . . . . . . . . . 172 . . . . . . . . Environmental considerations .............................. 174 Summary ............................................ 174 6 Culture Units ......................................... 175 Considerations in choosing culture units ...................... 175 Characteristics of culture units . . . . . . . . . . . . . . . . . . . . . 175 . . . . . . . . Applications of culture units .............................. 191 Hatchery design " . . . . . . . . . . . . . . . . . . . . . . . . . . 208 . . . . . . . . . . . Summary ............................................ 210 7 Obtaining Fish for Stocking . ............................. 211 Stock from the wild .................................... 211 Stock from the hatchery ................................. 211 Spermatogenesis (sperm formation) ....................... 232 Oogenesis (egg formation) ............................. 232 Oocyte maturation ................................... 233 Endocrine control of oocyte maturation and ovulation .......... 237 fuduced ovulation . . . . . . . . . . . . . . . . . . . . . . . . . . 238 . . . . . . . . . . Timing and egg quality . . . . . . . . . . . . . . . . . . . . . . . 257 . . . . . . . . . Artificial fertilization ................................. 265 Care of eggs ....................................... 267 Storage of gametes ................. ' .................. 269 Natural ovulation . . . . . . . . . . . . . . . . . . . . . . . . . . 270 . . . . . . . . . . Care of broodfish . . . . . . . . . . . . . . . . . . . . . . . . . . 289 . . . . . . . . . . Egg collection .. . . . . . . . . . . . . . . . . . . . . . . . . . . 290 . . . . . . . . . . fuduced vs natural ovulation ............................ 290 Broodfish adaptability . . . . . . . . . . . . . . . . . . . . . . . . . 291 . . . . . . . . . . Examples ............................................ 291 Genetic considerations . . . . . . . . . . . . . . . . . . . . . . . . . 295 . . . . . . . . . . Hybridization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 . . . . . . . . . . . . Sex control .......................................... 296 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298 . . . . . . . . . . . . . vi 8 Nutrition of Larval Fish . . . . . . . . . . . . . . . . . . . . . . . 299 . . . . . . . . . . Feeding criteria ....................................... 299 Choice and culture of foods . . . . . . . . . . . . . . . . . . . . . . 307 . . . . . . . . . General feeding practices . . . . . . . . . . . . . . . . . . . . . . . 336 . . . . . . . . . . Specific feeding practices ................................ 352 General methods used in our hatchery . . . . . . . . . . . . . . . . . 372 . . . . . . . Industrial-scale larval food processing in Italian hatcheries ......... 373 Summary ............................................ 374 9 Nutrition of Juvenile and Adult Fish ...................... 375 ............................. 375 Requirements and components Broodstock nutrition .................................... 407 Nutritional disorders .................................... 408 Environmental considerations . . . . . . . . . . . . . . . . . . . . . 411 . . . . . . . . . Feed studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411 . . . . . . . . . . . . Suggested feed formulas ................................. 460 Making and storing feeds ................................ 461 Feeding methods ...................................... 464 Summary ............................................ 467 10 Energetics ............................................ 469 Energy budget components and influencing factors . . . . . . . . . . . 469 . . . .
Author: Amy B. Gautam
Publisher:
ISBN:
Category : Fishery resources
Languages : en
Pages : 140
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Book Description
Regional reports and feature articles.
Author: Tom Lovell
Publisher: Springer Science & Business Media
ISBN: 1461549094
Category : Science
Languages : en
Pages : 270
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Book Description
Aquaculture is now recognized as a viable and profitable enterprise worldwide. As aquaculture technology has evolved, the push toward higher yields and faster growth has involved the enhancement or replacement of natural foods with prepared diets. In many aquaculture operations today, feed accounts for more than one-half the variable operating cost. Therefore, knowledge of nutrition and practical feeding of fish is essential to successful aquaculture. This book is not written exclusively for scientists but also for students, practicing nutritionists, and aquaculturists. It covers the known nutrient requirements and deficiency effects for different fishes, and digestion and metabolism of nutrients and energy. It discusses nutrient sources and preparation of practical and research feeds. It gives directions for conducting fish nutrition and feeding experiments. Feeding practices for salmonids, channel catfish, tilapias, shrimps and hybrid striped bass are presented. Since the first edition of this book was printed, the National Research Council of the National Academy of Sciences has revised the nutrient requirements for fish. These revisions are in the present edition. Other additions to this revised edition are chapters on nutrition and fish health, and bioavailability of nutrients. Each original chapter has been meticulously revised and updated with new information. Aquaculture is a dynamic area and new technologies are being introduced continuously; therefore, some of the material discussed in this revised edition may become obsolete quickly. Nonetheless, the material presented has been thoughtfully selected and updated to make it of maximum use to persons whose interests range from general aquaculture to animal nutrition to feed manufacture.
Author: Jack A. Mathias
Publisher: CRC Press
ISBN: 9781566702607
Category : Science
Languages : en
Pages : 436
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Book Description
Integrated Fish Farming (IFF) is a sustainable-agriculture technology practiced widely in Asia and other regions of the world. This integrated technology can offer farmers economic improvements while lessening the adverse environmental impacts of farming. IFF systems typically involve a combination of fish polyculture, integration of agricultural production (livestock and/or crops) with aquaculture, and on-farm waste recycling. Drawing on research presented by experts from around the world at the International Workshop on Integrated Fish Farming, this book provides thorough, detailed and truly interdisciplinary coverage of one of the world's most important approaches to integrated farming systems. Integrated Fish Farming places IFF in a global context, reporting on case studies of successful IFF operations, experiments to enhance IFF performance, bioeconomic survey and modeling analyses, research on farm waste use and pond ecology, socioeconomic elements of IFF extension and adoption, and the bio-technical and economic aspects of adapting IFF to reservoirs, marshlands, rice paddies and marginal habitats.
Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 1208
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Author:
Publisher:
ISBN:
Category : Loggerhead turtle
Languages : en
Pages : 192
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Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on the Department of the Interior and Related Agencies
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 436
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 434
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