Download or read book Measuring the Influence of Winter Conditions on Largemouth Bass Behaviour Using Both Biotelemetry and Laboratory Studies written by Caleb Thomas Hasler and published by . This book was released on 2007 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studying the winter ecology of freshwater fishes has been a focus of much past and present research. Because of obvious constraints with studying fish in situ during the winter, few studies have made links between laboratory findings and observations made in the natural environment. Recently, new developments in biotelemetry have provided a way of assessing the winter ecology of fish in a natural setting. At present, however, there are few, if any, studies that attempt to make direct links between field and laboratory results. This research focuses on the reaction of largemouth bass (Micropterus salmoides) to winter conditions using both biotelemetry and laboratory components. In the first part of the study, biotelemetry-derived swimming activity is assessed across a range of temperatures (4.0-25°C). As well, swim tunnel-derived Ucrit swimming speeds and burst swimming ability across similar temperatures were evaluated. In both cases, swimming activity and speeds decreased as temperatures decreased. In biotelemetry-derived measurements, swimming activities increase late in winter, possibly suggesting acclimatization. In the second part of the study the effect of hypoxia on winter habitat selection was investigated. Biotelemetry-obtained locations of largemouth bass were compared to the distribution of dissolved oxygen throughout the lake at numerous times throughout the winter. In addition, experiments were conducted in a laboratory setting on winter juvenile fish to determine the behavioural and physiological impacts of hypoxia. The results of these experiments revealed a behavioural response in the lab and habitat avoidance in the field at an environmental oxygen level of approximately 2 mg/L of dissolved oxygen. The combination of biotelemetry with laboratory data has demonstrated that more informative results about the winter ecology of freshwater fishes can be derived. In the future, usefulness of this combined approach in assessing the impacts of climate change on fish populations will be invaluable.
Download or read book Physiological and Behavioural Responses of Largemouth Bass Yearlings Micropterus Salmoides to Hypoxia at Summer and Winter Temperatures written by Vera Brenda Li and published by . This book was released on 2008 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this thesis was to determine the metabolic and behavioural outcomes from hypoxia exposure to largemouth bass (Micropterus salmoides) yearlings when acclimated to either winter (5°C) or summer (20°C) temperatures. This was achieved by exposing largemouth bass to varying levels of hypoxia and subsequently quantifying metabolites, in addition to observing behavioural patterns. The critical partial pressure of oxygen was also determined for fish at both temperatures. Hypoxia experiments revealed that metabolite concentrations increased or decreased significantly compared to control values as hypoxia levels intensified at 20°C, however there were minimal changes for fish at 5°C. More specifically, end product concentrations of lactate increased, while substrate concentrations of ATP, PCr and glycogen decreased and glucose concentrations did not change significantly at 20°C. It was also found that the magnitude of change was greater for fish at 20°C, indicating the impact of hypoxia is greater at warmer temperatures. In addition, it was noted that hypoxia experiments performed at either identical percent oxygen saturation (%) or identical dissolved oxygen (mg/L) resulted in very similar metabolite trends at both temperatures. In terms of behaviour, ventilation rates increased significantly and peaked at 2mg/L for largemouth bass at 20°C, however there was no change for fish at 5°C. There were also more instances of aquatic surface respiration with increasing hypoxia for fish at 20°C, but nearly no attempts at 5°C. Critical partial pressure of oxygen (Pcrit) values were calculated to be 1.36 " 0.02 mg/L (16% oxygen saturation) for 20°C and 0.77 " 0.04 mg/L (5% oxygen saturation) for 5°C fish respectively. The Pcrit levels corresponded to the hypoxia levels that initiated changes in metabolite concentrations at each temperature, thus indicating that largemouth bass undergo anaerobic metabolism. This study shows that the overall impact of hypoxia on largemouth bass yearlings was much greater in warmer water. These results indicate that hypoxia may become a very important physiological stress on younger life stages of fish as water temperatures increase with climate change.
Download or read book Contemporary and Historic Effects of Fishing on Largemouth Bass Populations Using Unexploited Populations for Reference written by Jan-Michael Hessenauer and published by . This book was released on 2015 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1995-10 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book South Dakota Farm Home Research written by and published by . This book was released on 1994 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of Stress in Fish written by Carl B. Schreck and published by Academic Press. This book was released on 2016-11-01 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology of Stress in Fish: Fish Physiology provides a general understanding on the topic of stress biology, including most of the recent advances in the field. The book starts with a general discussion of stress, providing answers to issues such as its definition, the nature of the physiological stress response, and the factors that affect the stress response. It also considers the biotic and abiotic factors that cause variation in the stress response, how the stress response is generated and controlled, its effect on physiological and organismic function and performance, and applied assessment of stress, animal welfare, and stress as related to model species. Provides the definitive reference on stress in fish as written by world-renowned experts in the field Includes the most recent advances and up-to-date thinking about the causes of stress in fish, their implications, and how to minimize the negative effects Considers the biotic and abiotic factors that cause variation in the stress response
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 Nutrition Abstracts and Reviews written by and published by . This book was released on 1998 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Directions in Ecological Physiology written by Martin E. Feder and published by Cambridge University Press. This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1988 book outlines conceptual approaches to the study of physiological adaptation in animals.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The BUGS Book written by David Lunn and published by CRC Press. This book was released on 2012-10-02 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bayesian statistical methods have become widely used for data analysis and modelling in recent years, and the BUGS software has become the most popular software for Bayesian analysis worldwide. Authored by the team that originally developed this software, The BUGS Book provides a practical introduction to this program and its use. The text presents
Download or read book Rhythms in Fishes written by Mohamed Ather Ali and published by Springer Science & Business Media. This book was released on 1992 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressed primarily to researchers of fish, but also of possible interest to researchers of biological rhythms in general, 19 papers from a workshop near Montreal, August 1991, discuss aspects of the biorhythms of fishes as they apply to aquaculture and to reactions to the pollution of natural habit
Download or read book Fish Field and Laboratory Methods for Evaluating the Biological Integrity of Surface Waters written by Donald J. Klemm and published by . This book was released on 1993 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animal Dispersal written by N.C. Stenseth and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.
Download or read book Fundamentals of Acoustical Oceanography written by Herman Medwin and published by Academic Press. This book was released on 1997-11-05 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: The developments in the field of ocean acoustics over recent years make this book an important reference for specialists in acoustics, oceanography, marine biology, and related fields. Fundamentals of Acoustical Oceanography also encourages a new generation of scientists, engineers, and entrepreneurs to apply the modern methods of acoustical physics to probe the unknown sea. The book is an authoritative, modern text with examples and exercises. It contains techniques to solve the direct problems, solutions of inverse problems, and an extensive bibliography from the earliest use of sound in the sea to present references.Written by internationally recognized scientists, the book provides background to measure ocean parameters and processes, find life and objects in the sea, communicate underwater, and survey the boundaries of the sea. Fundamentals of Acoustical Oceanography explains principles of underwater sound propagation, and describes how both actively probing sonars and passively listening hydrophones can reveal what the eye cannot see over vast ranges of the turbid ocean. This book demonstrates how to use acoustical remote sensing, variations in sound transmission, in situ acoustical measurements, and computer and laboratory models to identify the physical and biological parameters and processes in the sea.* Offers an integrated, modern approach to passive and active underwater acoustics* Contains many examples of laboratory scale models of ocean-acoustic environments, as well as descriptions of experiments at sea* Covers remote sensing of marine life and the seafloor* Includes signal processing of ocean sounds, physical and biological noises at sea, and inversions* resents sound sources, receivers, and calibration* Explains high intensities; explosive waves, parametric sources, cavitation, shock waves, and streaming* Covers microbubbles from breaking waves, rainfall, dispersion, and attenuation* Describes sound propagation along ray paths and caustics* Presents sound transmissions and normal mode methods in ocean waveguides
Download or read book Fundamentals of Shallow Water Acoustics written by Boris Katsnelson and published by Springer Science & Business Media. This book was released on 2012-02-22 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shallow water acoustics (SWA), the study of how low and medium frequency sound propagates and scatters on the continental shelves of the worlds oceans, has both technical interest and a large number of practical applications. Technically, shallow water poses an interesting medium for the study of acoustic scattering, inverse theory, and propagation physics in a complicated oceanic waveguide. Practically, shallow water acoustics has interest for geophysical exploration, marine mammal studies, and naval applications. Additionally, one notes the very interdisciplinary nature of shallow water acoustics, including acoustical physics, physical oceanography, marine geology, and marine biology. In this specialized volume the authors, all of whom have extensive at-sea experience in US and Russian research efforts, have tried to summarize the main experimental, theoretical, and computational results in shallow water acoustics, with an emphasis on providing physical insight into the topics presented.
Download or read book Introducing Biological Rhythms written by Willard L. Koukkari and published by Springer Science & Business Media. This book was released on 2007-07-29 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing Biological Rhythms is a primer that serves to introduce individuals to the area of biological rhythms. It describes the major characteristics and discusses the implications and applications of these rhythms, while citing scientific results and references. Also, the primer includes essays that provide in-depth historic and other background information for those interested in more specific topics or concepts. It covers a basic cross-section of the field of chronobiology clearly enough so that it can be understood by a novice, or an undergraduate student, but that it would also be sufficiently technical and detailed for the scientist.
