Search results for: ascorbic-acid-in-aquatic-organisms

Ascorbic Acid In Aquatic Organisms

Author : Konrad Dabrowski
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We are just beginning to discover the importance of vitamin C in the health of natural and man-made ecosystems. Synthesis of ascorbic acid is well understood, but algae as the only source of ascorbate in the aquatic food pyramid has not been explored. There is an expanding field of the culture of aquatic organisms that demand formulated feeds to be

Nutrition and Fish Health

Author : Carl D Webster
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Safeguard the success of aquaculture operations without expensive antibiotics! Diseases are a major threat to the sustainability of the aquaculture industry. Because antibiotics have many drawbacks, increasing importance is being placed on understanding the mechanisms that make nutrition a key factor in host defense against pathogens. Nutrition and Fish Health is the first book to provide comprehensive information on nutrition as a means to improve fish health and defend against infection. Nutrition and Fish Health offers state-of-the-art information on diseases affecting cold-water and warm-water fish, as well as marine shrimp. It comprehensively addresses such vital issues as: nutrition and feeding management immuno-stimulants mycotoxins fish immune system mechanisms the use of vaccines nutrition and environmental stress Nutrition and Fish Health is a comprehensive guide to using nutrition to make your aquaculture operation a success. Proper fish nutrition can help you: reduce the risk of disease decrease the risk of environmental contamination associated with the use of antibiotics increase production of good quality product increase profits Generously illustrated with graphs, charts, tables, and photographs, Nutrition and Fish Health is an essential guidebook for aquaculturists, fish producers, extension agents, aquaculture students, disease specialists, and feed formulators.

Biological Monitoring of Marine Pollutants

Author : F. John Vernberg
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Biological Monitoring of Marine Pollutants presents the proceedings of a symposium on ""Pollution and Physiology of Marine Organisms"" held in Milford, Connecticut, on November 7-9, 1980. It looks at the physiological effects of pollutants, such as synthetic organic compounds, petroleum hydrocarbons, and heavy metals, on marine organisms ranging from fishes and shrimps to barnacles, crabs, mussels, polychaetes, and microalgae. Comprised of four sections encompassing 22 chapters, this volume begins with an overview of the effects of synthetic organics, such as pesticides on marine organisms like the mysid shrimps Mysidopsis bahia. It proceeds with a discussion of the toxic effects of several chlorophenols on the grass shrimp, Palaemonetes pugio; how heavy metals, including silver, copper, cadmium, zinc, and mercury, affect species such as the polychaete Neanthes virens and the caridean shrimp Palaemonetes pugio; monitoring of water quality based on the biochemical and physiological responses of marine organisms to pollutants; and the effects of monocyclic aromatic hydrocarbons on fishes from an ecological standpoint. Marine scientists, ecologists, and students will find this book extremely useful.

Nutrition and Feeding of Fish

Author : Tom Lovell
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Aquaculture is more than a science in its infancy; it is now recognized as a viable and profitable enterprise worldwide. It will continue to grow and supply an increasingly larger percentage of fishery products consumed because the oceans are inadequately managed and their yield is unpredictable. Supply, price, and quality can be controlled more effectively when fish are cultured under managed conditions, like corn in a field. As aquaculture technology has evolved, there has been a trend toward higher yields and faster growth which has necessitated enhancing or replacing natural foods with prepared diets. In many aquaculture operations today, feed accounts for over half of the vari able operating cost. Feeding fish in their aqueous environment takes on dimensions beyond those considered in fee ding land animals; the nutrient requirements, feeding practices, and feeding environment are unique for fish. Knowledge on nutrition and practical feeding of fish is essential to successful aquaculture. This book is intended to be helpful to students, scientists, practic ing nutritionists, and aquaculturists. It covers the known nutrient requirements and deficiency effects for various fishes. It discusses nu trient sources and preparation of research and practical feeds. It gives direction for designing and conducting fish nutrition and feeding ex periments. Feeding practices for several commercially important fishes representing diverse culture systems (coldwater fish, warm water fish, crustaceans, pond cultures, and highly artificial cultures) are presented. One book, of course, cannot be all-encompassing in the area of fish nutrition and feeding.

Fisheries And Fish Toxicology

Author : B. N. Pandey
File Size : 57.73 MB
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Proceedings of "16th All India Congress of Zoology and National Symposium or Recent Advances in Animal Research with Special Emphasis on Invertebrates" held at Hyderabad during 21st-23rd October, 2005.

The Maintenance of Life

Author :
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Diseases of Aquatic Organisms

Author :
File Size : 78.5 MB
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Aquaculture

Author : B. N. Pandey
File Size : 34.34 MB
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Proceedings of the 17th All India Congress of Zoology and National Symposium on Co-existence with Friendly Fauna in India, held at Baramati during 15-17 October 2006.

Fish Adaptations

Author : Adalberto Luís Val
File Size : 83.15 MB
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Water is a living tissue influenced by chemical, biological and physical factors that, in turn, are influenced by local and climatic factors. Fish have to adjust physiologically to these alterations in habitat to survive. Physiological adaptation is a dynamic and never-ending process that has resulted in myriad fish groups adapted to the vast environmental diversity which exists on Earth. Moreover, adaptively modified organisms acquire greater ability to exploit the full range of natural environments, by adopting new modes of life in many situations. This book is a journey through fish adaptations.

Dietary Supplements for the Health and Quality of Cultured Fish

Author : Delbert M. Gatlin
File Size : 86.55 MB
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This book addresses current information on the effects of micronutrients and other efficacious substances from plants, animals and bacteria, with regard to quality and health of cultured fish. Each chapter contains tables, figures and is packed with many new references to help expand your knowledge of various aspects of fish culture technology. With fisheries scientists and students in mind, this book serves as a useful manual for your field of research.

UV Effects in Aquatic Organisms and Ecosystems

Author : E. Walter Helbling
File Size : 36.51 MB
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This book offers extensive coverage of the most important aspects of UVR effects on all aquatic ecosystems, encompassing UV physics, chemistry, biology and ecology.

Ascorbic Acid in Plant Growth Development and Stress Tolerance

Author : Mohammad Anwar Hossain
File Size : 37.2 MB
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Ascorbic acid (AsA), vitamin C, is one of the most abundant water-soluble antioxidant in plants and animals. In plants AsA serves as a major redox buffer and regulates various physiological processes controlling growth, development, and stress tolerance. Recent studies on AsA homeostasis have broadened our understanding of these physiological events. At the mechanistic level, AsA has been shown to participate in numerous metabolic and cell signaling processes, and the dynamic relationship between AsA and reactive oxygen species (ROS) has been well documented. Being a major component of the ascorbate-glutathione (AsA-GSH) cycle, AsA helps to modulate oxidative stress in plants by controlling ROS detoxification alone and in co-operation with glutathione. In contrast to the single pathway responsible for AsA biosynthesis in animals, plants utilize multiple pathways to synthesize AsA, perhaps reflecting the importance of this molecule to plant health. Any fluctuations, increases or decreases, in cellular AsA levels can have profound effects on plant growth and development, as AsA is associated with the regulation of the cell cycle, redox signaling, enzyme function and defense gene expression. Although there has been significant progress made investigating the multiple roles AsA plays in stress tolerance, many aspects of AsA-mediated physiological responses require additional research if AsA metabolism is to be manipulated to enhance stress-tolerance. This book summarizes the roles of AsA that are directly or indirectly involved in the metabolic processes and physiological functions of plants. Key topics include AsA biosynthesis and metabolism, compartmentation and transport, AsA-mediated ROS detoxification, as well as AsA signaling functions in plant growth, development and responses to environmental stresses. The main objective of this volume is therefore to supply comprehensive and up-to-date information for students, scholars and scientists interested in or currently engaged in AsA research.

Larval Fish Nutrition

Author : G. Joan Holt
File Size : 42.91 MB
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Nutrition is particularly important in the healthy development offish during their early-life stages. Understanding the uniquenutritional needs of larval fish can improve the efficiency andquality of fish reared in a culture setting. Larval FishNutrition comprehensively explores the nutritionalrequirements, developmental physiology, and feeding and weaningstrategies that will allow aquaculture researchers andprofessionals to develop and implement improved culture practices. Larval Fish Nutrition is logically divided into threesections. The first section looks at the role of specific nutrientrequirements in the healthy digestive development of fish. Thesecond section looks at the impacts if nutritional physiology onfish through several early-life stages. The final section looks atfeeding behaviors and the benefits and drawbacks to both live feedand microparticulate diets in developing fish. Written by a team of leading global researchers, Larval FishNutrition will be an indispensible resource for aquacultureresearchers, professionals, and advanced students. Key Features: Reviews the latest research on larval fish nutritionalrequirements, developmental physiology, and feeding and weaningstrategies Extensively covers nutritional needs of various early-lifestages in fish development Weighs the benefits and drawbacks to both live feeds andmicroparticulate diets Written by a global team of experts in fish nutrition andphysiology

The Progressive Fish Culturist

Author : U.S. Fish and Wildlife Service
File Size : 59.5 MB
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Control and Disposal of Cotton ginning Wastes

Author : Julius Korshover
File Size : 76.81 MB
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Biological Aspects of Lead an Annotated Bibliography Literature from 1950 Through 1964

Author : Irene R. Campbell
File Size : 29.54 MB
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Office of Air Programs Publication

Author : United States. Environmental Protection Agency. Office of Air Programs
File Size : 45.87 MB
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Improving Farmed Fish Quality and Safety

Author : Øyvind Lie
File Size : 67.10 MB
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Global aquaculture production has grown rapidly over the last 50 years. It is generally accepted that there is limited potential to increase traditional fisheries since most fish stocks are well or fully exploited. Consequently increased aquaculture production is required in order to maintain global per capita fish consumption at the present level. Fish farming enables greater control of product quality and safety, and presents the possibility of tailoring products according to consumer demands. This important collection reviews safety and quality issues in farmed fish and presents methods to improve product characteristics. The first part of the book focuses on chemical contaminants, chemical use in aquaculture and farmed fish safety. After an opening chapter discussing the risks and benefits of consumption of farmed fish, subsequent contributions consider environmental contaminants, pesticides, drug use and antibiotic resistance in aquaculture. Part two addresses important quality issues, such as selective breeding to improve flesh quality, the effects of dietary factors including alternative lipids and proteins sources on eating quality, microbial safety of farmed products, parasites, flesh colouration and off-flavours. Welfare issues and the ethical quality of farmed products are also covered. The final part discusses ways of managing of product quality, with chapters on HACCP, monitoring and surveillance, authenticity and product labelling. With its distinguished editor and international team of contributors, Improving farmed fish quality and safety is a standard reference for aquaculture industry professionals and academics in the field. Reviews safety and quality issues in farmed fish and presents methods to improve product characteristics Discusses contaminants, persistent organic pollutants and veterinary drug residues and methods for their reduction and control Addresses important quality issues, genetic control of flesh characteristics and the effects of feed on product nutritional and sensory quality

Toxicity of Dietborne Metals to Aquatic Organisms

Author : Joseph S. Meyer
File Size : 87.43 MB
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The Progressive Fish Culturist

Author :
File Size : 89.80 MB
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