Download or read book The Effects of Salinity Temperature and Stocking Density on the Growth and Food Conversion Efficiency of Juvenile Striped Bass Morone Saxatilis Walbaum written by Alice Fusfeld and published by . This book was released on 1982 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquaculture Europe written by and published by . This book was released on 1995 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Compensatory Growth in Hybrid Striped Bass Morone Chrysops X Morone Saxatilis Hormones and Mechanisms written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Compensatory growth (CG) is a period of growth acceleration that exceeds normal rates after animals are alleviated of certain growth-stunting conditions. While the endocrine control of growth in fishes and other vertebrates is regulated primarily through the growth hormone (GH) D insulin-like growth factor (IGF) axis, the hormonal dynamics regulating accelerated (compensatory) phases of growth are poorly understood. We assessed whether CG responses could be induced in hybrid striped bass (HSB; Morone chrysops X Morone saxatilis) through feeding and/or temperature manipulation, and then examined whether components of the GH/IGF endocrine growth axis could be contributing to the response. We found that CG responses can be elicited in HSB following periods of 1) partial feed restriction, 2) complete feed restriction and 3) a combination of low water temperatures and complete feed restriction, with full catch-up growth being achieved in the latter. The most dramatic periods of CG were preceded by a catabolic state marked by body weight loss, hepatic steatosis, depressed hepatosomatic index values and an endocrine state of GH resistance. Upon alleviation of the growth-stunting condition, HSB displayed significant elevations in growth rate that exceeded controls by as much as 4 times. This CG response was accompanied by increases in feed intake (hyperphagia), improved feed conversion and a reversal of steatotsis and GH resistance. The onset of CG in feed manipulation studies was marked by significant elevations in total hepatic IGF-I mRNA and plasma IGF-I, indicating that elevated synthesis and secretion of the growth factor may mediate rapid growth responses. Strong correlations between systemic IGF-I and SGR suggest that circulating levels of IGF-I may serve as a biomarker of growth in HSB and perhaps other fishes. The 40kDa IGF binding protein (IGFBP) may also contribute to CG, since plasma levels increased in concordance with IGF-I and growth. Although little is.
Download or read book The effect of salinity on growth food conversion ratio protein efficiency ratio and condition of Oreochromis mossabicus written by ER. Madikizela and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Fish Reproductive Biology written by Tore Jakobsen and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish recruitment is a key process for maintaining sustainable fish populations. In the marine environment, fish recruitment is carried out in many different ways, all of which have different life history strategies. The objective of this book is to argue for greater linkages between basic and applied research on fisheries recruitment, and assessment and management of exploited fish stocks. Following an introductory chapter, this second edition of Fish Reproductive Biology is organized into 3 main sections: Biology, Population Dynamics and Recruitment Information Critical to Successful Assessment and Management Incorporation of Reproductive Biology and Recruitment Considerations into Management Advice and Strategies The authors collectively bring a wide range of diverse experience in areas of reproductive biology, fisheries oceanography, stock assessment, and management. Fully updated throughout, the book will be of great interest to a wide audience. It is useful as a textbook in graduate and undergraduate courses in fisheries biology, fisheries science, and fisheries resource management and will provide vital information for fish biologists, fisheries scientists and managers.
Download or read book Striped Bass and Other Morone Culture written by R.M. Harrell and published by Elsevier. This book was released on 1997-05-23 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date discussion of the culture of striped bass and other Morone spp. The subject matter is broken down into functional components of the spawning, husbandry, and economics of the industry, and is written by some of the leading scientists in each of the respective areas of discussion. The chapters on reproduction, nutrition, environmental requirements, transportation, economics and fish processing are not found anywhere else in the striped bass literature. The chapter on water quality takes a very non-traditional approach to considering the impact water quality has on the production success of Morone and offers some very thought-provoking ideas on water management.Primarily written as a reference work, this book is intended to complement existing technique manuals.
Download or read book Synopsis of Biological Data on the Blue Crab Callinectes Sapidus Rathbun written by Mark R. Millikin and published by . This book was released on 1984 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chesapeake Delaware Canal written by and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Multivariate Statistics for Wildlife and Ecology Research written by Kevin McGarigal and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its focus on the practical application of the techniques of multivariate statistics, this book shapes the powerful tools of statistics for the specific needs of ecologists and makes statistics more applicable to their course of study. It gives readers a solid conceptual understanding of the role of multivariate statistics in ecological applications and the relationships among various techniques, while avoiding detailed mathematics and the underlying theory. More importantly, the reader will gain insight into the type of research questions best handled by each technique and the important considerations in applying them. Whether used as a textbook for specialised courses or as a supplement to general statistics texts, the book emphasises those techniques that students of ecology and natural resources most need to understand and employ in their research. While targeted for upper-division and graduate students in wildlife biology, forestry, and ecology, and for professional wildlife scientists and natural resource managers, this book will also be valuable to researchers in any of the biological sciences.
Download or read book Otolith Microstructure Examination and Analysis written by David K. Stevenson and published by McClain Printing Company. This book was released on 1992 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of otolith microstructure research has experienced phenomenal growth since the early 1970s and now forms the basis for hundreds of studies in early life history, age, growth, recruitment, migration, mortality and stock structure. This book represents the first effort to compile and summarize the many techniques and procedures associated with studies of otolith microstructure. The complete sequence of events, from sample collection to data analysis, is covered comprehensively, so as to be applicable to most species and situations. The various chapters include both published and unpublished procedures.
Download or read book Dissolved Gas Concentration in Water written by John Colt and published by Elsevier. This book was released on 2012-01-17 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquacultural, oceanographic, and fisheries engineering, as well as other disciplines, require gas solubility data to compute the equilibrium concentration. These calculations, for example, can affect the output of aquacultural production or assist in environmental consulting. Until now, published solubility information has not been available in a consistent and uniform manner in one location. This book presents solubility concentrations of major atmospheric gases (oxygen, nitrogen, argon, carbon dioxide), noble gases (helium, neon, krypton, xenon), and trace gases (hydrogen, methane, nitrous oxide) as a function of temperature, salinity, pressure, and gas composition in a variety of formats. Data, equations, and theory are explained so that the user is able to understand the calculations and problems. Furthermore, data and solubility information are presented in a range of units to make them accessible across disciplines. This book will help the reader to look at a problem from a quantitative viewpoint and better understand carbonate chemistry. Revised from the earlier edition to include more accurate carbon dioxide tables and separate sections on the solubility of noble gases, trace gases, and oxygen in brines to provide a single resource for gas solubility data. This book is essential for all students and practitioners working in aquatic fields. - A single source for highly accurate and comprehensive tables for gas solubility in aquatic systems - Information provided in tables, equations, and computer programmes - Theory is presented to better understand the equations and calculations
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 and Fisheries Management in Lakes and Reservoirs written by and published by . This book was released on 1993 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of Rising Feed Ingredient Prices on Aquafeeds and Aquaculture Production written by Krishen J. Rana and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2009 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of the ingredients, fishmeal and fish oil are highly favoured for aquafeeds and aquafeed production is under increasing pressure due to limited supplies and increasing price of fishmeal and fish oil.
Download or read book Human Impact on Danube Watershed Biodiversity in the XXI Century written by Doru Bănăduc and published by Springer Nature. This book was released on 2020-04-20 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second-longest European river after the Volga, the Danube is one of the world’s most important rivers in terms of its geographical and historical significance. In recent history, it has served as a major international waterway and numerous cities, including four capitals, have been founded on its banks. The 2826km-long Danube has a watershed measuring 801,093 km2 that is now shared between 19 countries, from its source in the Black Forest to the Black Sea, into which it pumps an average of 827 km3 of water a year. This book describes and explains key landscape values interactions (geographical, cultural and natural heritage). It also identifies the threats and various types of human impact affecting this system in all the countries of the Danube River Basin, based on the investigations and perspectives of a team of experienced naturalists, and in the context of the early 21st century, in which the human-nature relationship is still far from balanced. These studies demonstrate how biodiversity, conservation and ecological studies can help us successfully promote mutual cooperation and combine our efforts to address problems as a responsible continent.
