Marine Fish Culture

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 . . . .

With the continuing decline of commercial stocks of wild-caught fish, the interest in the culture of cold-water marine fish is rapidly growing, with much ongoing research into the development of this area. This important and timely book reviews the current and potential future situation concerning the major exploited marine fish species, such as cod, haddock, hake, wolf-fish, halibut, turbot and sole. The editors of Culture of Cold-Water Marine Fish have drawn together and carefully edited chapters from a wide range of international scientists. The contents list includes detailed reviews of abiotic factors, microbial interactions, prophylaxis and disease, live food and first feeding technologies, brood stock and egg production, functional development, weaning and nursery, on-growing to market size, status and perspectives for the species covered, stock enhancement and sea ranching, and an analysis of the finances, economics and markets for the fish species used in marine aquaculture. Culture of Cold-Water Marine Fish is an essential purchase for personnel involved in marine aquaculture, whether managing fish farms, supplying equipment and feed to the industry, or researching, studying or teaching the subject. Marine biologists, fisheries scientists, fish biologists, ecologists and environmental scientists will all find much of use and interest in this timely book. Libraries in all universities and research establishments where these subjects are studied and taught should have copies.

With the expansion of the world aquaculture industry, there has been increasing concern over sustainability and environmental impact. This book addresses this topical issue, concentrating on marine aquaculture.

Environmental risks associated with large-scale marine finfish cage aquaculture cast doubt on the sustainability of the industry. This book divides the topic into its broad parts: Eutrophication; Sedimentation and Benthic Impacts; Changes in Trophic Structure and Function; and Managing Environmental Risks, and goes further to analyze methods and models currently used to measure near and far-field environmental effects of finfish mariculture and and their implications for management.

In spite of the volume of literature on the subject of marine fish farming, there is no up–to–date history of the subject. As much valuable data has been published in journals which are difficult to access, the author of this history felt there was a need for as complete an account as possible of those trials, failures and successes which have been recorded since the first descriptions by the Romans. This overview of the industry is not clouded by technical detail so that the non–specialist should find it illuminating and entertaining, while the expert will gain useful background knowledge. Controversial issues and theories are reviewed and a diverse range of information and topics is covered.

This book compiles the latest findings in the field of marine and brackishwater aquaculture. It covers significant topics such as techniques of culture of live feeds (microalgae, rotifer, Artemia, marine copepod & polychaetes), while also highlighting vital themes like the culture and applications of free and marine sponge associated microbial probiotics, controlled breeding, seed production and culture of commercially important fin and shell fishes. Moreover, the book focuses on the breeding and culture of marine ornamental fishes, sea cucumber and sea urchin and discusses seaweeds culture, aqua feed formulation and nutrition, water quality management in hatchery and grow-out culture systems, fish disease diagnosis and health management and cryopreservation of fish gametes for sustainable aquaculture practices, all from a multidimensional perspective. The global fish production was 154 million tonnes in 2011 which more or less consisted of capture and culture fisheries (FAO, 2012). Roughly 80% of this is from inland-freshwater aquaculture and the remainder from capture fisheries in the marine and brackishwater sector. However, marine and brackishwater catches have recently begun to diminish due to overexploitation, climate change and pollution. The UNEP report affirmed that if the world remains on its current course of overfishing, by 2050, the ocean fish stock could become extinct or no longer commercially viable to exploit. In these circumstances, aquaculture is considered to be a promising sector to fulfill our future protein requirement. However, brackishwater and marine fish production now face serious challenges due to e.g. lack of quality fish seeds, feeds, poor water quality management and diseases. Fisheries and aquaculture sectors play a vital role as potential sources of nutritional security and food safety around the globe. Fish food is rich in protein, vitamins, phosphorous, calcium, zinc, selenium etc. In addition, fish contains omega-3 fatty acids, which help to prevent cardiovascular diseases. Fish food can also provide several health benefits to consumers. The omega 3 fatty acids found in fish can reduce the levels of LDL cholesterol (the “bad” cholesterol) and increase the HDL levels (the “good” cholesterol). Research conducted in Australia has proved that fish consumption can be used to cure hypertension and obesity. It is also reported that people who ate more fish were less prone to asthma and were able to breathe more easily. Omega 3 fish oil or fish consumption can help to prevent three of the most common forms of cancer: breast cancer, colon and prostate cancer. The omega 3 fatty acids present in fish or fish oil induce faster hair growth and prevent hair loss. Since most varieties of fish are rich in protein, eating fish helps to keep hair healthy. Furthermore, fish or fish oil helps in improving the condition of dry skin, giving it a healthy glow. It is useful in treating various skin problems such as eczema, psoriasis, itching, redness of skin, skin lesions and rashes. It is well known that eating fish improves vision and prevents Alzheimer’s and type-2 diabetes, and can combat arthritis. Further, fish oil or fish is good for pregnant women, as the DHA present in it helps in the development of the baby’s eyes and brain. It helps to avoid premature births, low birth weights and miscarriages. In addition, it is widely known that fish can be a good substitute for pulses in cereal-based diets for the poor. The global fish production was roughly 154 million tonnes in 2011 (FAO, 2012). It is estimated that by 2020 global fish requirements will be over 200 million tonnes; as such, innovative technological improvements are called for in order to improve the production and productivity in fisheries. In this context, this book provides valuable information for academics, scientists, researchers, government officials and farmers on innovative technological advances for sustainable fish production using aquaculture methods. The book identifies the main issues and trends in marine and brackishwater aquaculture from a global perspective in general and in the Indian context in particular. It includes 23 chapters written by prominent researchers from various institutes and universities across India, who address the latest aquaculture technologies with distinctive approaches to support academics, researchers and graduates in the fields of Fisheries, Aquaculture, Marine Science, Marine Biology, Marine Biotechnology, Zoology and Agricultural Sciences. Our thanks go to our contributors; we are confident that all readers will immensely benefit from their valued expertise in the field of marine and brackishwater aquaculture.

The global trade of aquatic organisms for home and public aquariums, along with associated equipment and accessories, has become a multi-billion dollar industry. Aquaculture of marine ornamental species, still in its infancy, is recognized as a viable alternative to wild collection as it can supplement or replace the supply of wild caught specimens and potentially help recover natural populations through restocking. This book collects into a single work the most up-to-date information currently available on the aquaculture of marine ornamental species. It includes the contributions of more than 50 leading scientists and experts on different topics relevant for the aquaculture of the most emblematic groups of organisms traded for reef aquariums. From clownfish, to angelfish, tangs and seahorses, as well as corals, anemones, shrimps, giant clams and several other reef organisms, all issues related with the husbandry, breeding, and trade are addressed, with explanatory schemes and illustrations being used to help in understanding the most complex topics addressed. Marine Ornamental Species Aquaculture is a key reference for scientists and academics in research institutes and universities, public and private aquaria, as well as for hobbyists. Entrepreneurs will also find this book an important resource, as the culture of marine ornamental species is analyzed from a business oriented perspective, highlighting the risks and opportunities of commercial scale aquaculture of marine ornamentals.