Download or read book Effect of Differently Lipid enriched Live Feed on Growth Survival and Lipid Composition of Two Larval Gadoids written by Alexandre Sachsida Garcia and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enrichment of Live Feeds with Various Oil Emulsions written by Metusalach and published by . This book was released on 2002 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Larval Fish Nutrition written by G. Joan Holt and published by John Wiley & Sons. This book was released on 2011-05-24 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrition is particularly important in the healthy development of fish during their early-life stages. Understanding the unique nutritional needs of larval fish can improve the efficiency and quality of fish reared in a culture setting. Larval Fish Nutrition comprehensively explores the nutritional requirements, developmental physiology, and feeding and weaning strategies that will allow aquaculture researchers and professionals to develop and implement improved culture practices. Larval Fish Nutrition is logically divided into three sections. The first section looks at the role of specific nutrient requirements in the healthy digestive development of fish. The second section looks at the impacts if nutritional physiology on fish through several early-life stages. The final section looks at feeding behaviors and the benefits and drawbacks to both live feed and microparticulate diets in developing fish. Written by a team of leading global researchers, Larval Fish Nutrition will be an indispensible resource for aquaculture researchers, professionals, and advanced students. Key Features: Reviews the latest research on larval fish nutritional requirements, developmental physiology, and feeding and weaning strategies Extensively covers nutritional needs of various early-life stages in fish development Weighs the benefits and drawbacks to both live feeds and microparticulate diets Written by a global team of experts in fish nutrition and physiology

Download or read book Enrichment of Live Prey with Microparticles for the Enhanced Delivery of Water soluble Nutrients to Marine Fish Larvae written by Matt Hawkyard and published by . This book was released on 2015 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the wild, marine fish larvae feed on copepods and other planktonic organisms. Copepods are often considered the "gold standard" for meeting the nutritional needs of cultured marine fish larvae; however, in captivity, marine fish larvae are generally fed cultured live prey, i.e. rotifers (Brachionus plicatilis) and/or Artemia sp., until they can be weaned onto artificial diets, which typically coincides with the end of the larval phase. Concentrations of certain water-soluble nutrients in rotifers and Artemia, notably taurine, may not be sufficient to meet the nutritional demands of some species of marine fish larvae. The delivery of low-molecular weight, water-soluble substances to aquatic organisms is challenging because these substances are rapidly lost from food particles when suspended in water, referred to as nutrient leaching. One solution to this problem is to encapsulate water-soluble substances within synthetic microparticles that are specifically designed to reduce nutrient leaching. Alternatively, water-soluble substances may be dissolved in the culture water of these organisms facilitating nutrient absorption or ingestion via drinking, hereafter referred to as the "dissolved method" of nutrient enrichment. In Chapter 2, I provide an overview of enrichment methods for cultured live prey and put particular emphasis on the enrichment of water-soluble compounds. In Chapters 3, 4 and 5, my co-authors and I evaluated the use of synthetic microparticles, liposomes and wax spray beads, for increasing the water-soluble nutrient concentrations (enrichment) of rotifers and Artemia with the intent to increase their nutritional quality for marine fish larvae. Furthermore, we compared microparticulate enrichment with dissolved methods whereby the nutrients were dissolved in the culture medium. Microparticle-enriched live prey were evaluated by: 1) using fluorescent techniques to investigate the ingestion and digestion of microparticles by live prey and 2) determining the growth performance of two species of marine fish larvae, northern rock sole (Lepidopsetta polyxystra) and California yellowtail (CYT: Seriola lalandi) in response to different enrichment methods for the water-soluble nutrient, taurine. Taurine was used as a model nutrient because taurine concentrations are low in cultured live prey, especially when compared to copepods, and because its was believed to be a growth-limiting nutrient for marine fish larvae. Taurine concentrations in rotifers and Artemia enriched with taurine-containing microparticles could be increased to levels reported in copepods. In Chapters 3 and 4, we found that northern rock sole larvae grew significantly larger, were more developed and had higher whole body taurine concentrations when fed rotifers enriched with taurine-containing microparticles when compared to control treatments. In Chapter 5, we found that CYT larvae fed taurine enriched rotifers showed increased growth (final dry weights) and had higher whole body taurine concentrations when compared to larvae fed unenriched rotifers but these differences were not apparent in the subsequent Artemia phase, suggesting that unenriched Artemia had sufficient taurine concentrations to allow compensatory growth of CYT. Differences and similarities are discussed between the efficacy of liposomes and wax spray beads for rotifer enrichment and subsequent nutritional effects on fish larvae. Ultimately, this research provides the first evidence of positive growth effects of liposome- and wax spray bead-enriched live prey on marine fish larvae as a result of enhanced delivery of water-soluble nutrients. The outcomes of these findings suggest that microparticles may be used as a research tool to assess the water-soluble nutrient deficiencies of cultured live prey for marine fish larvae. Furthermore, with further development, these methods may have application for commercial hatcheries and could result in improved production efficiencies and cost savings for these operations

Download or read book Digestive Physiology and Food Intake in Marine Fish Larvae written by Sofia Morais and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A growth depressing effect of high dietary neutral lipid levels in cultured marine fish larvae has been reported. This may be the result of a decrease in the efficiency or activity of digestive enzymes, a reduction in absorption efficiency and/or a decrease in food intake. This book presents work that was carried out on commercially valuable species (Atlantic herring, Senegalese sole, European seabass and gilthead seabream), to investigate the effects of neutral lipid level and source (fatty acid composition) on some of these key factors. The results collectively indicate that lipid transport across the enterocytes may be more problematic when feeding high neutral lipid diets than lipid digestion, although both factors are likely to intervene. Results also suggest that food intake might be affected by the lipid source included in the diet. Therefore, the neutral lipid level in diets for marine fish larvae has a significant impact in several factors influencing growth but clearly it cannot be dissociated of its fatty acid composition, which appears to play a central role on the nutritional and physiological effects of dietary lipid, at the ingestion, digestion and absorption levels.

Download or read book Development of Microparticulate Feeds and Methods to Improve Acceptability of Artificial Diets by Blue Spotted Goby Larvae Asterropteryx Semipunctata written by Brendan W. Clack and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: An acceptable microparticulate diet for marine fish larvae may be defined as an artificial diet that contains, retains, and delivers the required nutrients to support survival and growth. Factors affecting ingestion rate of prey items by fish larvae include environmental factors such as light intensity, prey/background contrast, possible chemical cues, and co-feeding with live foods. The efficient addition of FAA (free amino acids) in microparticles, at concentrations similar to those found in live foods may reduce or eliminate the need for exogenous proteases and FAA from live feeds. Complex particles (CP), when coupled with optimization of environmental parameters, may result in ingestion of artificial diets at rates sufficient to support high survival and growth rates. Lipid spray beads (LSB) have shown promise in their ability to deliver low molecular weight water-soluble (LMWS) nutrients to marine fish larvae. Furthermore, ingestion and digestion of zein-bound complex particles (CP), with incorporated LSB, by fish larvae have been reported. Here we describe improvements in LSB technology as well as feeding conditions for the effective delivery of FAA to blue spotted goby larvae (Asterropteryx semipunctata). The FAA glycine was used as a model LMWS nutrient due to its high solubility in water. LSB performance was found to be optimized with an aqueous core concentration of 400 g l-1 glycine and was shown to have significantly higher DE over a 60 min period in aqueous suspension compared to that of beads with lower core glycine concentrations (two-way ANOVA; p0.0001). Evaluation of core to lipid ratios (v/v) showed that retention and delivery efficiencies of LSB containing cores of 400 g glycine l-l at a core to lipid ratio of 1:2 v/v were greater than those of LSB with other core to lipid ratios. The use of optimized LSB in zein-bound CP resulted in an encapsulation efficiency of 4% w/w glycine for the CP, which was within the range of FAA concentrations reported for rotifers, Artemia and copepods. Blue spotted goby larvae showed peak feeding incidence at a light intensity of 5.44 æE s-1 m-2 when fed on CP against a black background. Higher or lower light intensities and a white background, were shown to independently reduce feeding incidence. In a 5 day feeding trial, larvae fed CP containing LSB with core material consisting of casein, hydrolyzed casein, or a mix of FAA (based on the average of the amino acids found in casein and hydrolyzed casein) showed 6, 8, and 6% survival respectively, which was significantly lower than 37% survival for larvae fed the marine phytoplankton, Tahitian Isochrysis galbana and Rhodomonas sp. (p0.05). At 0% survival, the starved control had significantly lower survival than that of all other treatments (p

Download or read book Essential Fatty Acid Requirements and Related Aspects of Lipid Metabolism in the Red Drum S c i a e n o p s O c e l l a t u s written by Rebecca Thoms Lochmann and published by . This book was released on 1992 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Feeding Diets Supplemented with Different Ratios of Linseed Oil corn Oil Mixture on the Larval Survival Postlarvae Production and Fatty Acid Composition of Freshwater Prawn Macrobrachium Rosenbergii written by P. Roustaian and published by . This book was released on 1999 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Copepods in Aquaculture written by Cheng-Sheng Lee and published by John Wiley & Sons. This book was released on 2008-02-15 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of copepods in aquaculture has long been recognized, especially in the larval rearing of many marine fishes. This timely publication provides a single source of information on copepod biology, culture methods and practical use in marine finfish hatcheries. Originating out of a workshop held on copepods by the Oceanic Institute in Hawaii, this proceedings includes review articles and papers presented by leading international experts in copepod biology and aquaculture. It is a seminal work that integrates the most up-to-date information on selecting copepod species, effects of algal species on reproduction, ways to increase production, the nutritional value of copepods, behavioral characteristics of copepods, potential use of copepod nauplii and eggs, and their application to larval rearing of various marine finfish species.

Download or read book Fish Energetics written by Peter Tytler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is almost thirty years since Professor G. G. Winberg established the basis for experimental studies in fish energetics with the publication of his monograph, Rate of Metabolism and Food Requirements of Fishes. His ultimate aim was to develop a scientific approach to fish culture and management, and the immense volume of literature generated in the ensuing years has been mainly in response to the demand for information from a rapidly expanding, world-wide aquaculture industry and to the shortcomings of contemporary practices in fisheries management. The purpose of this book is not to review this literature compre hensively, but, assuming an informed readership, to focus attention on topics in which new knowledge and theory are beginning to be applied in practice. Most emphasis has been placed on food; feeding; production (growth and reproduction) and energy budgeting, as these have most influence on the development of fish culture. Some chapters offer practical advice for the selection of methods, and warn of pitfalls in previous approaches. In others the influence of new theory on the interpretation of studies in fish energetics is discussed in the context of resource allocation and adaptation. We hope that the scope of material presented here will have sufficient interest and value to help significantly to fulfil Winberg's original objectives.

Download or read book Impacts of climate change on fisheries and aquaculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-01-06 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report indicates that climate change will significantly affect the availability and trade of fish products, especially for those countries most dependent on the sector, and calls for effective adaptation and mitigation actions encompassing food production.

Download or read book North Sea Region Climate Change Assessment written by Markus Quante and published by Springer. This book was released on 2016-08-31 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an up-to-date review of our current understanding of climate change in the North Sea and adjacent areas, as well as its impact on ecosystems and socio-economic sectors. It provides a detailed assessment of climate change based on published scientific work compiled by independent international experts from climate-related disciplines such as oceanography, atmospheric sciences, marine and terrestrial ecology, using a regional evaluation and review process similar to that of the Intergovernmental Panel on Climate Change (IPCC). It provides a comprehensive overview of all aspects of our changing climate, discussing a wide range of topics including past, current and future climate change, and climate-related changes in marine, terrestrial and freshwater ecosystems. It also explores the impact of climate change on socio-economic sectors such as fisheries, agriculture, coastal zone management, coastal protection, urban climate, recreation/tourism, offshore activities/energy, and air pollution.

Download or read book Aquaculture Perspective of Multi Use Sites in the Open Ocean written by Bela H. Buck and published by Springer. This book was released on 2017-05-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY 4.0 license. This volume addresses the potential for combining large-scale marine aquaculture of macroalgae, molluscs, crustaceans, and finfish, with offshore structures, primarily those associated with energy production, such as wind turbines and oil-drilling platforms. The volume offers a comprehensive overview and includes chapters on policy, science, engineering, and economic aspects to make this concept a reality. The compilation of chapters authored by internationally recognized researchers across the globe addresses the theoretical and practical aspects of multi-use, and presents case studies of research, development, and demonstration-scale installations in the US and EU.

Download or read book Jellyfish and Polyps written by Antonella Leone and published by MDPI. This book was released on 2020-11-20 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue of Marine Drugs gathers recent investigations on the proteomes, metabolomes, transcriptomes, and the associated microbiomes of marine jellyfish and polyps, including bioactivity studies of their compounds and more generally, on their biotechnological potential, witnessing the increasingly recognized importance of Cnidaria as a largely untapped Blue Growth resource for new drug discovery. These researches evoke the outstanding ecological importance of cnidarians in marine ecosystems worldwide, calling for a global monitoring and conservation of marine biodiversity, so that the biotechnological exploitation of marine living resources will be carried out to conserve and sustainably use the natural capital of the oceans.

Download or read book Marine Fish Culture written by John W. Tucker Jr. and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 . . . .

Download or read book Early Life History and Recruitment in Fish Populations written by R.C. Chambers and published by Springer Science & Business Media. This book was released on 1997-07-31 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the processes influencing recruitment to an adult fish population or entry into a fishery occur very early in life. The variations in life histories and behaviours of young fish and the selective processes operating on this variation ultimately determine the identities and abundance of survivors. This important volume brings together contributions from many of the world's leading researchers from the field of fish ecology. The book focuses on three major themes of pressing importance in the analysis of the role that the early life history of fishes plays in the number and quality of recruits: the selective processes at play in their early life history; the contributions of early life history to the understanding of recruitment.

Download or read book Physiological Adaptations to Swimming in Fish written by Josep V. Planas and published by Frontiers Media SA. This book was released on 2017-08-16 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Swimming is an integral part of the life history of many fish species as is intimately linked with their ability to express feeding and predator avoidance behaviors, habitat selection and environmental preferences, social and reproductive behaviors as well as migratory behaviors. Therefore, swimming is an important determinant factor of fitness in a true Darwinian sense and, not surprisingly, swimming performance has been often used as a measure of physiological fitness in fish. The main aim of this Research Topic is to showcase some of the current studies designed to improve our understanding of the physiological energetic and metabolic requirements of swimming and of the adaptive responses to swimming in fish.