TY - BOOK AU - Pillay, T V R AU - Kutty, M N TI - Aquaculture principles and practices U1 - e-book (AS) PY - 2005/// CY - UK PB - Blackwell Publishing KW - Aquaculture N2 - CONTENT Acknowledgements, xvi Part I Principles of Aquaculture, 1 1 Basis of Aquaculture, 3 1.1 Scope and definition, 3 1.2 Cultural and socio-economic basis, 3 1.3 Biological and technological basis, 4 1.4 Role in fishery management, 5 1.5 References, 6 2 History of Aquaculture and its Present State, 7 2.1 Origins and growth of aquaculture, 7 2.2 Present state of aquaculture, 9 2.3 References, 13 3 National Planning of Aquaculture Development, 14 3.1 National priorities and aquaculture development, 15 3.2 National resources, 15 3.3 Technology and human resources, 19 3.4 Legal and environmental factors, 19 3.5 Organization of aquaculture, 21 3.5.1 Stakeholder participation, 21 3.5.2 Employment opportunities, 22 3.5.3 Industrial-scale aquaculture, 22 3.5.4 Investment requirements, 23 3.5.5 Plan reviews and revisions, 23 3.6 Aquaculture for rural development, 23 3.7 Aquaculture for social benefit, 24 3.7.1 Participation of the local community, 24 3.8 References, 25 4 Selection of Sites for Aquaculture, 27 4.1 General considerations, 27 4.2 Land-based farms – conflicts, 30 4.2.1 Soil characteristics, 30 4.2.2 Acid sulphate soils, 32 4.3 Open-water farms, 34 4.4 Water quantity and quality, 34 4.5 Sources of pollution and user conflicts, 36 4.6 Environmental impact assessment, 39 4.7 Social aspects of site selection and management, 40 4.8 Legal empowerment and licensing of farms, 41 4.9 References, 41 5 Selection of Species for Culture, 43 5.1 Biological characteristics of aquaculture species, 44 5.2 Economic and market considerations, 45 5.3 Introduction of exotic species, 46 5.4 Common aquaculture species, 48 5.5 References, 55 6 Design and Construction of Aquafarms, 56 6.1 Inland and coastal pond farms, 56 6.1.1 Data for pond farm design, 56 6.1.2 Design and construction of pond farms, 61 6.2 Tank and raceway farms, 77 6.2.1 Tank farms, 77 6.2.2 Raceway farms, 82 6.3 Cage farms, 84 6.3.1 Types of cages and layout of cage farms, 84 6.3.2 Submersible cages and cage maintenance, 87 6.4 Pens and enclosures, 90 6.5 Design and construction of hatcheries, 91 6.5.1 Source and supply of water, 93 6.5.2 Reconditioning and recirculation of water, 94 Contents ix 6.5.3 Hatchery equipment, 95 6.5.4 Layout and accessories, 98 6.6 References, 102 7 Nutrition and Feeds, 105 7.1 Feeding habits and food utilization, 105 7.2 Energy metabolism, 106 7.3 Energy requirements and sources, 107 7.3.1 Carbohydrates, 108 7.3.2 Proteins, 108 7.3.3 Lipids and essential fatty acids, 112 7.3.4 Vitamins, 115 7.3.5 Minerals, 118 7.4 Brood stock and larval nutrition, 120 7.5 Live foods, 121 7.5.1 Nature and source of live foods, 121 7.5.2 Pond fertilization for production of live foods, 134 7.6 Artificial feeds, 143 7.6.1 Supplementary feedstuffs, 143 7.6.2 Types of processed feeds, 144 7.6.3 Ingredients, 145 7.6.4 Feed formulation and feed formulae, 148 7.6.5 Substitution of fish meal in feeds, 153 7.6.6 Feed preparation, 154 7.6.7 Larval feeds, 159 7.6.8 Feeding techniques, 162 7.7 References, 168 8 Reproduction and Genetic Selection, 174 8.1 Reproductive cycles, 174 8.2 Control of reproduction, 175 8.3 Induced reproduction, 176 8.3.1 Hypophysation, 178 8.3.2 Gametes and fertilization, 180 8.4 Preservation of gametes, 181 8.5 Use of sex steroids for sex reversal, 181 8.6 Genetic selection and hybridization, 182 8.6.1 Methods of genetic selection, 183 8.6.2 Mass selection, 184 8.6.3 Genotypic selection, 185 8.6.4 Progeny testing, 186 8.6.5 Combined selection, 186 8.6.6 Cross-breeding, 187 8.6.7 Chromosomal manipulation, 189 8.7 Transgenics in aquaculture, 189 8.8 Molecular techniques, 190 8.8.1 Inbreeding and maintenance of genetic quality, 191 8.8.2 Intraspecific crossbreeding, 191 8.8.3 Interspecific hybridization, 192 8.8.4 Genetic selection, 192 8.8.5 Correlated responses, 192 8.8.6 Polyploidy, 192 8.8.7 Sex manipulation and breeding, 193 8.8.8 Gynogenesis, androgenesis and cloning, 193 8.8.9 Interspecific nuclear transfer, 193 8.8.10 Linkage mapping, 194 8.8.11 Marker-assisted selection, 194 8.8.12 Combining genetic enhancement programmes, 194 8.9 References, 195 9 Health and Diseases, 201 9.1 Health and diseases in aquaculture, 201 9.1.1 Factors affecting fish health, 202 9.1.2 Integrated health management, 206 9.2 Major diseases of aquaculture species, 216 9.2.1 Viral diseases, 217 9.2.2 Bacterial diseases, 222 9.2.3 Fungus diseases, 230 9.2.4 Protozoan diseases, 233 9.2.5 Copepod infections, 237 9.2.6 Trematode infections, 239 9.3 Public health and aquaculture, 240 9.4 References, 242 10 Control of Weeds, Pests and Predators, 246 10.1 Weed problems in aquaculture farms, 246 10.2 Common aquatic weeds, 247 10.3 Methods of weed control, 247 10.3.1 Prevention of infestations and utilization of weeds, 247 10.3.2 Manual and mechanical methods, 249 10.3.3 Chemical methods, 250 10.3.4 Biological control, 252 10.4 Control of predators, weed animals and pests, 253 10.4.1 Predators, 254 10.4.2 Weed animals and pests, 255 10.4.3 Use of non-selective pesticides, 256 10.5 References, 257 11 Harvesting and Post-Harvest Technology, 260 11.1 Harvesting methods, 260 11.1.1 Harvesting drainable ponds, 260 11.1.2 Seining undrainable ponds, 260 11.1.3 Other methods of fishing, 264 11.1.4 Harvesting cage and raceway farms, 266 11.1.5 Harvesting of molluscs, 267 11.2 Handling, preservation and transport, 268 11.2.1 Sorting, 268 11.2.2 Depuration of molluscs, 270 11.2.3 Preservation and processing, 271 11.3 References, 272 x Contents 12 Marketing of Aquaculture Products, 274 12.1 Outlets for aquaculture products, 274 12.2 Organization of marketing, 275 12.3 Market strategies for industrial aquaculture, 276 12.3.1 Market research, 276 12.3.2 Formulation of market strategies, 280 12.4 Marketing strategies for aquaculture products, 282 12.5 References, 283 13 Economics and Financing of Aquaculture, 284 13.1 Economic viability, 284 13.2 Data requirements, 285 13.2.1 Assets and liabilities, 285 13.2.2 Variable and fixed costs, 285 13.2.3 Operating income, 286 13.3 Analysis of data, 286 13.3.1 Evaluation of farm performance, 287 13.3.2 Sensitivity analysis, 289 13.3.3 Minimum farm size, 290 13.4 Financial and economic feasibility of investment, 293 13.4.1 Financial analysis, 296 13.4.2 Cash flow analysis, 299 13.4.3 Socio-economic analysis, 299 13.5 Risk and insurance, 301 13.6 References, 303 14 Farm Management, 304 14.1 Concepts and economic principles of farm management, 304 14.2 Application of farm management principles in aquaculture, 306 14.2.1 Farm business analysis, 307 14.2.2 Planning and organization of farm business, 308 14.2.3 Operation and financing, 308 14.2.4 Labour management, 309 14.2.5 Decision-making, 309 14.3 References, 310 15 Sustainability and Environmental Management of Aquaculture, 311 15.1 Sustainability and environmental management, 311 15.2 Pollutionary effects of waste discharges from aquatic farms, 311 15.3 Controlled use of natural resources, 312 15.4 Selection of sites and farming practices, 312 15.5 Guidelines for sustainable aquaculture and transport of live aquatic animals, 315 15.5.1 Guidelines of principles and standards, 315 15.5.2 Regulation and licensing, 315 15.6 References, 316 Part II Aquaculture Practices, 319 16 Carps, 321 16.1 Main species of carps (family Cyprinidae) used for culture, 321 16.1.1 Common carp, 321 16.1.2 Chinese carps, 324 16.1.3 Indian carps, 326 16.1.4 Species combinations, 328 16.2 Culture systems, 328 16.3 Spawning and fry production, 330 16.3.1 Breeding of common carp, 332 16.3.2 Selection and segregation of brood stock, 332 16.3.3 Spawning and larval rearing, 333 16.3.4 Hypophysation, 334 16.3.5 Nursing of carp fry, 342 16.4 Grow-out and polyculture, 343 16.4.1 Stocking rates, 343 16.4.2 Polyculture, 343 16.4.3 Pond fertilization and feeding, 345 16.5 Diseases and mortality, 346 16.6 Harvesting and marketing, 349 16.6.1 Economics and carp culture, 350 16.7 References, 350 17 Trouts and Salmons, 352 17.1 Trouts, 353 17.1.1 Culture systems, 355 17.1.2 Development of brood stock, 358 17.1.3 Techniques of propagation, 359 17.1.4 Grow-out, 362 17.2 Salmons, 363 17.2.1 Culture systems, 364 17.2.2 Techniques of propagation, 365 17.2.3 Grow-out, 367 17.3 Feeds and feeding of salmonids, 368 17.4 Salmonid diseases, 370 17.5 Harvesting and processing, 371 17.6 Economics, 371 17.7 References, 372 18 Catfishes, 373 18.1 Channel catfish, 373 18.1.1 Culture system, 373 18.1.2 Propagation and grow-out, 374 18.2 Asian catfishes, 379 18.2.1 Spawning and fry production of Clarias spp., 380 18.2.2 Propagation of Pangasius, 381 18.2.3 Grow-out of Asian catfishes, 382 Contents xi 18.2.4 Diseases, 383 18.2.5 Economics, 384 18.3 African catfish, 384 18.3.1 Spawning and fry production, 385 18.3.2 Grow-out and feeds, 386 18.4 European catfish (family Siluridae), 387 18.4.1 Spawning and rearing of fry, 387 18.4.2 Grow-out, 388 18.5 References, 389 19 Eels, 391 19.1 Culture systems, 391 19.2 Collection and rearing of seed eels, 393 19.3 Feeds and grow-out of adult eels, 394 19.4 Diseases and mortality, 395 19.5 Harvesting and marketing, 397 19.6 Economics, 398 19.7 References, 399 20 Tilapias, 400 20.1 Cultivated species of tilapias, 401 20.2 Culture systems, 402 20.3 Spawning and production of seed stock, 404 20.3.1 Methods of spawning, 404 20.3.2 Mono-sex seed stock and hybrids, 406 20.4 Grow-out and feeding, 409 20.4.1 Grow-outs in ponds, 409 20.4.2 Cage and pen culture, 410 20.4.3 Tank and raceway culture, 411 20.4.4 Feeds and feeding, 411 20.5 Diseases and mortality, 412 20.6 Harvesting and marketing, 412 20.7 Economics, 412 20.8 References, 415 21 Grey Mullets and Milkfish, 417 21.1 Grey mullets (family Mugilidae), 417 21.1.1 Culture systems, 418 21.1.2 Fry collection and artificial propagation, 419 21.1.3 Grow-out, 421 21.1.4 Diseases, 423 21.2 Milkfish, 423 21.2.1 Culture systems, 424 21.2.2 Fry collection and induced spawning, 424 21.2.3 Grow-out, 428 21.2.4 Harvesting and marketing, 431 21.3 References, 432 22 Yellowtail, 434 22.1 Culture systems, 434 22.2 Production of seedlings, 435 22.3 Grow-out, 436 22.4 Diseases, 436 22.5 Harvesting and marketing, 437 22.6 References, 437 23 Sea-Basses and Sea-Breams, 438 23.1 Sea-basses, 438 23.1.1 European sea-bass, 440 23.1.2 Asian sea-bass, 440 23.2 Sea-breams, 444 23.2.1 Gilthead sea-bream, 444 23.2.2 Red sea-bream, 446 23.3 References, 447 24 Other Finfishes, 449 24.1 Murrels (snakeheads), 451 24.1.1 Spawning and fry production, 452 24.1.2 Grow-out, 453 24.2 Gouramis, 453 24.1.1 Spawning and fry production, 454 24.1.2 Grow-out, 456 24.3 Groupers, 457 24.3.1 Fry collection and induced spawning, 457 24.3.2 Nursing and grow-out, 458 24.4 Rabbit fishes, 458 24.4.1 Fry collection and induced spawning, 459 24.4.2 Grow-out, 460 24.5 Turbot, 460 24.5.1 Controlled spawning and hatchery production of juveniles, 460 24.5.2 Grow-out, 462 24.6 Cod, 463 24.7 Tunas, 465 24.8 References, 469 25 Shrimps and Prawns, 473 25.1 Major cultivated species of shrimps and prawns, 473 25.2 Shrimp culture systems, 478 25.2.1 Production of seed stock, 480 25.2.2 Collection of wild seed stock, 480 25.2.3 Hatchery production of seed stock, 480 25.3 Reproduction and larval rearing of shrimps, 481 25.3.1 Brood stock, 481 25.3.2 Hatchery systems, 482 25.3.3 Spawning and larval rearing, 485 25.4 Grow-out of shrimps, 487 25.4.1 Food and feeding, 490 25.4.2 Diseases, 490 25.4.3 Harvesting and marketing, 492 25.5 Economics of shrimp farming, 493 25.6 Reproduction and larval rearing of freshwater prawns, 495 25.6.1 Hatchery systems, 496 25.6.2 Spawning and larval rearing, 497 xii Contents 25.7 Grow-out of fresh-water prawns, 500 25.7.1 Food and feeding, 501 25.7.2 Harvesting and marketing, 503 25.8 Economics of fresh-water prawn farming, 506 25.9 References, 506 26 Crayfishes and Crabs, 510 26.1 Crayfishes, 510 26.1.1 Culture of Procambarus clarkii, 513 26.2 Crabs, 515 26.2.1 Culture of Scylla serrata, 515 26.2.2 Propagation of crabs in Japan, 517 26.3 References, 517 27 Oysters and Mussels, 519 27.1 Oysters, 520 27.1.1 Culture systems, 522 27.1.2 Production of seed oysters, 525 27.1.3 Grow-out, 532 27.1.4 Harvesting, handling and marketing, 538 27.2 Mussels, 538 27.2.1 Culture systems, 541 27.2.2 Seed stock, 543 27.2.3 Grow-out, 544 27.2.4 Harvesting, depuration and marketing, 545 27.3 References, 546 28 Clams, Scallops and Abalones, 549 28.1 Clams, 549 28.1.1 Culture systems, 549 28.1.2 Hatchery production of seed, 550 28.1.3 Grow-out, 551 28.2 Scallops, 552 28.2.1 Spat collection, 552 28.2.2 Hatchery production of spat, 553 28.2.3 Grow-out, 553 28.3 Abalones, 555 28.3.1 Controlled reproduction and larval rearing, 558 28.3.2 Grow-out, 559 28.4 References, 560 29 Seaweeds, 562 29.1 Culture systems, 563 29.2 Culture practices, 564 29.2.1 Porphyra culture, 564 29.2.2 Culture of Undaria, 569 29.2.3 Culture of Laminaria, 570 29.2.4 Culture of other edible seaweeds, 571 29.2.5 Culture of seaweeds for industrial use, 572 29.3 References, 574 30 Integration of Aquaculture with Crop and Livestock Farming, 576 30.1 Rationale of integrated farming, 576 30.2 Integrated farming of fish and livestock, 577 30.2.1 Pig and fish farming, 577 30.2.2 Duck and fish farming, 579 30.2.3 Farming of other animals in association with fish, 582 30.3 Rice-field aquaculture, 582 30.3.1 Objectives and types of rice-field aquaculture, 584 30.3.2 Rice–fish rotation, 585 30.3.3 Combined culture of rice and fish, 587 30.4 Polyculture of bivalves and seaweeds in marine environments, 591 30.5 References, 591 31 Stocking of Open Waters and Ranching, 594 31.1 Open-water stocking, 594 31.1.1 Reservoirs, 594 31.1.2 Lakes and streams, 596 31.1.3 Coastal and inland seas, 600 31.2 Ranching of anadromous species, 602 31.2.1 Salmons, 603 31.2.2 Sturgeons, 609 31.3 Ownership and regulation of fishing, 611 31.4 References, 611 Index, 614 ER -