Download or read book The Effect of Acclimation Temperature and Triploidy on Hypoxia Tolerance in Brook Charr Salvelinus Fontinalis written by Rebecca Rae Porter and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Triploid fish could be beneficial to aquaculture sustainability due to their effective sterility preventing escaped farmed fish from mating with wild fish. However, experience to date has suggested that they are less tolerant of environmental stressors. The goal of this study was therefore to determine whether acclimation to warm temperature improves the performance of both diploid and triploid brook charr (Salvelinus fontinalis) under conditions of high temperature and hypoxia. A preliminary experiment tested fish of both ploidies acclimated to two different temperatures (15 and 18°C) at a range of test temperatures (ambient, 20, 22, 24, 26, 28, 30°C) to determine the oxygen tension (PO2) at loss of equilibrium and time taken to reach loss of equilibrium, during progressive hypoxia. A follow-up experiment involved first acclimating fish to the same two temperatures and then reacclimating the 18°C fish to 15°C before using the same protocol to test hypoxia tolerance at a narrower range of temperatures (ambient, 24, 26, 28, 30°C). Warm acclimation (18°C) improved high temperature and hypoxia tolerance in both ploidies, but this improvement did not last after reacclimation to cooler temperatures. Triploids had slightly lower hypoxia tolerance in both experiments. This study shows that (1) while increasing acclimation temperature improves tolerance of fish regardless of ploidy in high temperature and hypoxic conditions, the effect is not long-lasting, and (2) the difference in tolerance between ploidies may not be great enough for triploids to have a negative impact on the aquaculture industry and instead should be used to minimize negative impacts caused by farmed salmon mating with wild populations of Atlantic salmon. However, further research needs to be done to optimize this approach for use in the aquaculture industry.
Download or read book Hypoxia Tolerance of Triploid Brook Charr Salvelinus Fontinalis written by Sarah Anne McGeachy and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Triploid salmonids are used in aquaculture and stocking programs for recreational fishing because they are reproductively sterile and therefore cannot breed in the wild. However, they appear to be more sensitive than diploids to environmental stressors. The objective of this study was to develop a better understanding of the hypoxia tolerance of triploids. I compared the acute hypoxia tolerance of sibling diploid and triploid brook charr that were acclimated to either moderate hypoxia (65% of air saturation) or normoxia (98% air saturation). Fish then underwent acute hypoxia trials, by slowly injecting nitrogen gas to displace oxygen and using loss of equilibrium (LOE) as the endpoint. Hypoxia-acclimated fish had a lower oxygen tension (PO2) at LOE compared to fish acclimated to normoxia, regardless of ploidy. Ploidy did not affect time to LOE, but triploids had a higher PO2 at LOE (i.e., were less hypoxia tolerant) compared to diploids. Potential predictors of hypoxia tolerance (hematocrit, blood glucose, blood lactate, relative ventricular mass, hepatosomatic index, condition factor, compact myocardium thickness, and interlamellar cell mass) did not provide conclusive results. This study has shown the capacity for hypoxia acclimation to improve triploid performance, although not to the same extent as for diploids.
Download or read book Transcriptional posttranscriptional regulations in agricultural species after stresses written by Suxu Tan and published by Frontiers Media SA. This book was released on 2023-02-03 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1988 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tilapias Biology and Exploitation written by M.C.M Beveridge and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Referred to in the Bible, pictured on the wall-friezes of ancient Egyptian tombs, and a subject of fascination for generations of scientists, the tilapias (Cichlidae: Tilapiini) have featured in the diet and culture of humankind for thousands of years. The present century has seen their spread from Africa throughout the tropics and sub-tropics, largely for food and fisheries purposes. This book attempts to pull together our knowledge of this important group - their biology and fisheries and aquaculture - in a single volume, something that has not been done comprehensively for nearly two decades. A succession of chapters by acknowledged authorities covers evolution, phylogenetic relationships and biogeography, reproductive biology, mating systems and parental care, diet, feeding and digestive physiology, environmental physiology and energetics, the role of tilapias in ecosystems, population dynamics and management, genetics, seed production, nutrition, farming, economics and marketing. The book is aimed at biologists, fisheries scientists, aquaculturists, and all interested in aquatic ecology.
Download or read book The Cardiovascular System written by and published by Academic Press. This book was released on 1992-10-16 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book and its companion, Fish Physiology, Volume 12, Part B, are the first major syntheses of recent advances, general concepts, and species diversity of fish in almost 25 years. It provides broad coverage of the major aspects of cardiovascular physiology and is a definitive sourcebook for the field. This book discusses the special design of the venous system in aquatic vertebrates, reviews the nature of the secondary circulation in fish, and discusses the probable absence of the lymphatic system. It is of value to teachers in comparative physiology as well as to the researcher.
Download or read book Aquaculture Production Systems written by James H. Tidwell and published by John Wiley & Sons. This book was released on 2012-06-26 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture is an increasingly diverse industry with an ever-growing number of species cultured and production systems available to professionals. A basic understanding of production systems is vital to the successful practice of aquaculture. Published with the World Aquaculture Society, Aquaculture Production Systems captures the huge diversity of production systems used in the production of shellfish and finfish in one concise volume that allows the reader to better understand how aquaculture depends upon and interacts with its environment. The systems examined range from low input methods to super-intensive systems. Divided into five sections that each focus on a distinct family of systems, Aquaculture Production Systems serves as an excellent text to those just being introduced to aquaculture as well as being a valuable reference to well-established professionals seeking information on production methods.
Download or read book Fish Welfare written by Edward J. Branson and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish have the same stress response and powers of nociception as mammals. Their behavioural responses to a variety of situations suggest a considerable ability for higher level neural processing – a level of consciousness equivalent perhaps to that attributed to mammals. Each chapter of this book has been written by specialists in their field. The subject matter is wide ranging and covers in detail concepts of animal welfare in addition to more specific aspects of fish welfare. Philosophical concepts of welfare are discussed along with more practical areas of fish welfare encompassing all husbandry and management activities that have a potential to affect the welfare of the fish in our care. This book is an essential purchase for fish veterinarians, fish farmers, fish biologists and those involved in the aquaculture industry and its regulation.
Download or read book Principles of Comparative Respiratory Physiology written by Pierre Dejours and published by Elsevier-North-Holland Biomedical Press. This book was released on 1981 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sturgeons and Paddlefish of North America written by G.T.O LeBreton and published by Springer Science & Business Media. This book was released on 2006-01-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern North American sturgeons and paddlefish are the result of 100 million years of evolution. Once an integral part of aboriginal culture, their numbers were decimated by overfishing and habitat destruction during the past two centuries. This book details the extensive science aimed at helping these remarkable species recover from the brink of extinction, and describes the historical, biological, and ecological importance of North American sturgeon and paddlefish. The text is enhanced by photographs and detailed line drawings. This comprehensive volume will be an invaluable resource for researchers, educators, and consultants, in academic and government settings, who work to further scientific understanding of these fishes. No other single compilation has documented current information in such detail.
Download or read book Reproductive Sciences in Animal Conservation written by Pierre Comizzoli and published by Springer Nature. This book was released on 2019-08-30 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition emphasizes the environmental impact on reproduction, with updated chapters throughout as well as complete new chapters on species such as sharks and rays. This is a wide-ranging book that will be of relevance to anyone involved in species conservation, and provides critical perspectives on the real utility of current and emerging reproductive sciences. Understanding reproductive biology is centrally important to the way many of the world’s conservation problems should be tackled. Currently the extinction problem is huge, with up to 30% of the world’s fauna being expected to disappear in the next 50 years. Nevertheless, it has been estimated that the global population of animals in zoos encompasses 12,000 – 15,000 species, and we anticipate that every effort will be made to preserve these species for as long as possible, minimizing inbreeding effects and providing the best welfare standards available. Even if the reproductive biology community cannot solve the global biodiversity crisis for all wild species, we should do our best to maintain important captive populations. Reproductive biology in this context is much more than the development of techniques for helping with too little or too much breeding. While some of the relevant techniques are useful for individual species that society might target for a variety of reasons, whether nationalistic, cultural or practical, technical developments have to be backed up by thorough biological understanding of the background behind the problems.
Download or read book Genome Mapping and Genomics in Fishes and Aquatic Animals written by Thomas D. Kocher and published by Springer Science & Business Media. This book was released on 2008-06-07 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mapping of animal genomes has generated huge databases and several new concepts and strategies, which are useful to elucidate origin, evolution and phylogeny. Genetic and physical maps of genomes further provide precise details on chromosomal location, function, expression and regulation of academically and economically important genes. The series Genome Mapping and Genomics in Animals provides comprehensive and up-to-date reviews on genomic research on a large variety of selected animal systems, contributed by leading scientists from around the world. This volume summarizes the first era of genomic studies of aquaculture species, in which the tools and resources necessary to support whole-genome sequencing were developed. These tools will enhance efforts toward selective breeding of aquaculture species. Included in this volume are summaries of work on salmonids, cyprinids, catfish, tilapias, European sea bass, Japanese flounder, shrimps and oysters.
Download or read book Comparative Developmental Physiology written by Stephen J. Warburton and published by Oxford University Press. This book was released on 2006-03-02 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparative developmental physiology is a growing discipline examining a diversity of organisms as they transform from single cells to mature, reproductive individuals. This collection of original, innovative essays emerged from a Roundtable on Comparative Developmental Physiology held in Glen Rose, Texas in the summer of 2002. This meeting brought together investigators studying the physiology of developing animals in an effort to identify the field's potential contributions to biology. The participants honed in on common emerging themes and future goals, which are reflected in the chapters within. The nascent community of comparative developmental physiologists was challenged to amplify the power of data collection and tool development by focusing on a few select model organisms, while still employing the power of the broader, more traditional comparative approach. Evolution has provided comparative developmental physiologists with remarkable biological diversity, which they have used to investigate a broad range of questions critical for understanding how life works. This goes beyond the basic nuts and bolts of cellular mechanisms to the functional whole, from the mechanistic level to behavior within and between organisms. The union of developmental biology with the breadth of comparative physiology holds much promise for a deeper understanding of evolutionary processes.
Download or read book The Welfare of Fish written by Tore S. Kristiansen and published by Springer Nature. This book was released on 2020-07-01 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates how fish experience their lives, their amazing senses and abilities, and how human actions impact their quality of life. The authors examine the concept of fish welfare and the scientific knowledge behind the inclusion of fish within the moral circle, and how this knowledge can change the way we treat fish in the future. In many countries fish are already protected by animal welfare legislation in the same way as mammals, but in practice there is still a major gap between how we ethically view these groups and how we actually treat them. The poor treatment of fish represents a massive animal welfare problem in aquaculture and fisheries, both in terms of the number of animals affected and the severity of the welfare issues. Thanks to its interdisciplinary scope, this thought-provoking book appeals to professionals, academics and students in the fields of animal welfare, cognition and physiology, as well as fisheries and aquaculture management.
Download or read book Biological Opinion that Address the Potential Effects on Sacramento River Winter run Chinook Salmon from the Bureau of Reclamation s Proposed Los Vaqueros Project written by and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Comparative Physiology of Vertebrate Respiration written by George Morgan Hughes and published by Harvard University Press. This book was released on 1963 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a concise study of the structure and function of vertebrate respiratory systems. It describes not only the individual organ systems, but also the relationship of these systems to each other and to the animal's environment. For example, the author emphasizes that a proper understanding of respiration involves a consideration of the external environment as a source of oxygen as well as the biochemistry of the cell; and, from the evolutionary point of view, that physiological changes in the respiratory and circulatory systems are dominated by the origin of the land habit. The author's approach to the subject exemplifies that trend to the amalgamation of Zoology and Physiology, which has become increasingly marked at universities and schools in recent years. This synthesis requires, broadly, a knowledge of classical comparative anatomy, ecology, evolution, physiology and biochemistry; an enormous task, but nevertheless one in which the zoologist holds a central position. This book indicates the nature of such an eclectic approach, with the animal, in its environment and its evolution, as its focal point. Covering a rapidly changing field of research the author refers to many recent views and indicates where these differ from those commonly accepted.
