Effects Of Temperature And Diet On The Metabolic Phenotypes Of Lake Sturgeon Acipenser Fulvescens

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Effects of Temperature and Diet on the Metabolic Phenotypes of Lake Sturgeon, Acipenser Fulvescens

Author : Gwangseok Yoon
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Effects of Temperature and Diet on the Metabolic Phenotypes of Lake Sturgeon, Acipenser Fulvescens by : Gwangseok Yoon

Download or read book Effects of Temperature and Diet on the Metabolic Phenotypes of Lake Sturgeon, Acipenser Fulvescens written by Gwangseok Yoon and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The environment during early life history strongly impacts phenotypic development in all organisms, which further influences developmental trajectory and ecological fitness later in life. Depending on the developmental stage and magnitude of change in the environment, phenotypes may become irreversible and thus have a long-lasting effect later in life. This thesis was designed to better understand how changes in the environment may influence plasticity and variation of metabolic phenotypes of Lake Sturgeon (Acipenser fulvescens) within the first year of life. Broadly speaking, the thesis tested two hypotheses that 1) all measured phenotypes would be plastic; and 2) durations of environmental effects on phenotypic development would be correlated with distinct developmental windows. Studies were developed to examine 1) short-term effects of temperature or diet on metabolic phenotypes such as metabolic rate, energy density, fatty acid profiles, and growth (Chapters 2 and 3) and 2) longer-term effects of temperature or diet during early life on these metabolic phenotypes (Chapters 4, 5 and 6). The first experimental chapter (Chapter 2) examined ontogenetic development of metabolic rate and demonstrated that dietary shifts between Artemia to bloodworm resulted in cessation of growth with elevated routine metabolic rate. Chapter 3 examined how fatty acid profiles and plasma cortisol concentration were influenced by environmental temperature and showed that decreasing temperature led to increases in mono- and polyunsaturated fatty acids in both phospholipids and triglycerides, and food deprivation resulted in lack of difference between baseline and peak cortisol concentrations. Chapter 4 examined how temperature during early life influenced plasticity of growth and showed that temperature post-dietary transition resulted in a transient effect on growth and energy metabolism without long-term effects post-winter. Chapter 5 examined how temperature during early life could influence growth and fatty acid metabolism when fish were exposed to colder temperatures later in life and demonstrated that elevated temperatures resulted in a longer-term effect on growth but lack of transcriptional responses of desaturating fatty acids when exposed to a cold temperature (3.5°C) later in life. The final experimental chapter, Chapter 6 examined longer-term effects of diet at the onset of exogenous feeding on metabolism and growth and demonstrated that an enriched diet resulted in prolonged effects on growth, digestive enzyme activity and survival prior to a simulated overwintering. This doctoral thesis research revealed that all measured metabolic phenotypes were plastic, but subtle changes in temperature and diet during early life history resulted in transient or prolonged effects on growth and metabolism in age-0 lake sturgeon. Results will aid our understanding of cohort and population dynamics as well as contribute to the development of conservation strategies for lake sturgeon, a species at risk or endangered across its natural range.

Effects of Temperature, Dissolved Oxygen and Substrate on the Development of Metabolic Phenotypes in Lake Sturgeon, Acipenser Fulvescens

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Author : Gwangseok Yoon
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Effects of Temperature, Dissolved Oxygen and Substrate on the Development of Metabolic Phenotypes in Lake Sturgeon, Acipenser Fulvescens by : Gwangseok Yoon

Download or read book Effects of Temperature, Dissolved Oxygen and Substrate on the Development of Metabolic Phenotypes in Lake Sturgeon, Acipenser Fulvescens written by Gwangseok Yoon and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environment-phenotype interactions are significant particularly during early life history as they often dictate physiological performance, growth and ultimately ecological fitness of individuals. Temperature, dissolved oxygen and substrate are all important factors for developing metabolic phenotypes in fish. In this thesis, effects of temperature, dissolved oxygen (DO) and substrate on standard metabolic rate (SMR), forced maximum metabolic rate (FMR), metabolic scope (MS), energy density (ED), enzyme activity associated with ATP regeneration (pyruvate kinase, lactate dehydrogenase and cytochrome c oxidase), condition factor (K), hepatosomatic index (HSI) and critical thermal maxima (CTmax) of developing age-0 Lake Sturgeon, Acipenser fulvescens, including a simulated overwintering event, were examined. This research revealed that temperature, dissolved oxygen and substrate all significantly influenced development of metabolic phenotypes in Lake Sturgeon. While reduced temperature significantly increased SMR, increased temperature substantially decreased the survival rate. Lower DO (80%) did not impact FMR and MS in the short term, however, prolonged exposure to mild hypoxia, particularly during the stressful condition of overwintering, significantly reduced FMR and MS. Inclusion of substrate was found to significantly enhance K and SMR, and it was suggested that substrate be used at the early yolk-sac stage to enhance growth and survival. Further, a strong linear relationship between dry to wet mass ratio and ED was found, which can be used practically to estimate energetic status of Lake Sturgeon. This research provides information regarding environment-phenotype interaction during the first year of life in Lake Sturgeon. This information will contribute to a better understanding of critical factors influencing the successful recruitment of populations that are endangered throughout most of their natural range.

Temperature Effects on Green Sturgeon (Acipenser Medirostris Ayres) Bioenergetics

Author : Ryan Brogan Mayfield
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (66 download)

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Book Synopsis Temperature Effects on Green Sturgeon (Acipenser Medirostris Ayres) Bioenergetics by : Ryan Brogan Mayfield

Download or read book Temperature Effects on Green Sturgeon (Acipenser Medirostris Ayres) Bioenergetics written by Ryan Brogan Mayfield and published by . This book was released on 2002 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Effect of Temperature on the Growth of Juvenile Lake Sturgeon, Acipenser Fulvescens

Author : Kevin E. Wehrly
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Effect of Temperature on the Growth of Juvenile Lake Sturgeon, Acipenser Fulvescens by : Kevin E. Wehrly

Download or read book The Effect of Temperature on the Growth of Juvenile Lake Sturgeon, Acipenser Fulvescens written by Kevin E. Wehrly and published by . This book was released on 1995 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Early Environmental Effects on Growth Rate, Muscle Development, and Swimming Performance in Larval and Age-0 Lake Sturgeon, Acipenser Fulvescens

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Author : Catherine Brandt
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Early Environmental Effects on Growth Rate, Muscle Development, and Swimming Performance in Larval and Age-0 Lake Sturgeon, Acipenser Fulvescens by : Catherine Brandt

Download or read book Early Environmental Effects on Growth Rate, Muscle Development, and Swimming Performance in Larval and Age-0 Lake Sturgeon, Acipenser Fulvescens written by Catherine Brandt and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In fishes, differences in egg incubation, water temperature, and substrate can have a significant impact on phenotypic development. This is particularly relevant during the first year of life when growth rate peaks and influences an individual's life history trajectory. In the present study, Lake Sturgeon, Acipenser fulvescens, were reared in different environments for approximately one year. In the first year, sturgeon were reared in 3 temperature regimes (with or without substrate) that mimicked hatchery conditions or river temperature profiles. In the second year, embryos were incubated in MacDonald jars or adhered to substrate and newly hatched larvae were reared in different thermal environments (16, 18 and 20°C) for two weeks during the first month post-hatch. All treatments were then transferred to a common garden set-up where tanks were fed by river water at ambient temperature and natural light cycles. Fish were deprived of food when water temperature reached 1.5°C, then food was re-introduced when water temperature exceeded 2°C, approximately 4.5 months later. Yolksac volumes, body length and mass were assessed during both years. In the first year, there were differences in yolk sac absorption between substrate treatments in the first two weeks post-hatch, and differences in larval length between temperature treatments following the overwintering. In the second year, red muscle fibre area and myonuclear counts were assessed and volitional downward swimming and forced escape responses were tested. Growth rate in the first three months of life was highest in the 20°C group of fish but converged in all treatments during winter. Growth rate in fish raised in warmer waters during early life once again exceeded cooler water treatments post-winter, suggesting growth phenotype was fixed in early life, showing little phenotypic plasticity, and was temperature dependent. Thus, increased growing temperature during early life history results in development of a fast-growing phenotype post the first winter. Overall, there was an absence of significant differences between results for muscle fibre area and myonuclear counts between incubation and temperature treatments and the presence of significant differences between time points indicating a strong evolutionary pressure to maintain plasticity in muscle structure and swimming performance.

Conservation Physiology for the Anthropocene - Issues and Applications

Author :
Publisher : Elsevier
ISBN 13 : 0128242698
Total Pages : 670 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Conservation Physiology for the Anthropocene - Issues and Applications by :

Download or read book Conservation Physiology for the Anthropocene - Issues and Applications written by and published by Elsevier. This book was released on 2022-11-18 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation Physiology for the Anthropocene – A Systems Approach, Volume 39B in the Fish Physiology series, is a comprehensive synthesis related to the physiology of fish in the Anthropocene. This volume helps solve knowledge gaps by considering the many ways in which different physiological systems (e.g., sensory physiology, endocrine, cardio-respiratory, bioenergetics, water and ionic balance and homeostasis, locomotion/biomechanics, gene function) and physiological diversity are relevant to the management and conservation of fish and fisheries. Chapters in this release include Using physiology for recovering imperiled species – the Delta smelt, Conservation hatcheries – the Sturgeon story, Aquatic pollutants and stressors, and more. Other sections discuss Fisheries interactions in a multi-stressor world, Environmental change in riverine systems - Amazon basin stressors, Environmental change in lakes and wetlands – East African basin stressors, Coral reef fish in a multi-stressor world, Polar fish in a multi-stressor world, Physiology informs fisheries restoration and habitat management, A physiological perspective on fish passage and entrainment, Invasive species control and management – the sea lamprey story, and On the conservation physiology of fishes for tomorrow. Includes authoritative contributions from an international board of authors, each with extensive expertise in the conservation physiology of fish Provides the most up-to-date information on the ways in which different physiological systems are relevant to the management and conservation of fish and fisheries Presents the latest release in the Fish Physiology series Identifies how anthropogenic stressors perturb physiological systems Explores how different physiological systems can be exploited to solve conservation problems

The Effect of Temperature and Diet on the Reproduction and Growth of the White Sturgeon, Acipenser Transmontanus

Author : Michael Jonas Klein
Publisher :
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.:/5 (47 download)

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Book Synopsis The Effect of Temperature and Diet on the Reproduction and Growth of the White Sturgeon, Acipenser Transmontanus by : Michael Jonas Klein

Download or read book The Effect of Temperature and Diet on the Reproduction and Growth of the White Sturgeon, Acipenser Transmontanus written by Michael Jonas Klein and published by . This book was released on 1991 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Function of the Lake Sturgeon, Acipenser Fulvescens, Thyroid System and Dietary Effects

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (654 download)

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Book Synopsis The Function of the Lake Sturgeon, Acipenser Fulvescens, Thyroid System and Dietary Effects by :

Download or read book The Function of the Lake Sturgeon, Acipenser Fulvescens, Thyroid System and Dietary Effects written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Function of the Lake Sturgeon (Acipenser Fulvescens) Thyroid System and Dietary Effects

Author : James Plohman
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (184 download)

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Book Synopsis The Function of the Lake Sturgeon (Acipenser Fulvescens) Thyroid System and Dietary Effects by : James Plohman

Download or read book The Function of the Lake Sturgeon (Acipenser Fulvescens) Thyroid System and Dietary Effects written by James Plohman and published by . This book was released on 2000 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Effect of Temperature on the Early Development of White Sturgeon and Lake Sturgeon

Author : Yuan Liang Wang
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis The Effect of Temperature on the Early Development of White Sturgeon and Lake Sturgeon by : Yuan Liang Wang

Download or read book The Effect of Temperature on the Early Development of White Sturgeon and Lake Sturgeon written by Yuan Liang Wang and published by . This book was released on 1984 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Investigations Into Effects of Environmental Stressors on Lake Sturgeon Physiology, Behavior, and Survival During Early Ontogeny

Author : Lydia Wassink
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.6/5 (647 download)

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Book Synopsis Investigations Into Effects of Environmental Stressors on Lake Sturgeon Physiology, Behavior, and Survival During Early Ontogeny by : Lydia Wassink

Download or read book Investigations Into Effects of Environmental Stressors on Lake Sturgeon Physiology, Behavior, and Survival During Early Ontogeny written by Lydia Wassink and published by . This book was released on 2020 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental stressors experienced by wildlife can have profound impacts on behavior and physiology that may have consequences for survival. My dissertation investigates how early life stress influences physiology, behavior, and survival in lake sturgeon (Acipenser fulvescens), an ancient chondrostean fish species. Lake sturgeon are regionally threatened, and therefore exploring the mechanisms by which stressors influence fitness is important in informing conservation efforts. My dissertation examines behavioral and physiological outcomes of four potential stressors encountered by lake sturgeon larvae: high temperature, maternal-offspring environmental mismatch, captive rearing, and predator interaction. In Chapter 1, I examined effects of temperature by comparing lake sturgeon reared at 10°C (low stress) and 18°C (high stress). During the free embryo stage, individuals reared at 18C exhibited a smaller cortisol elevation in response to an acute stressor, indicating lower physiological reactivity to stress. At the larval stage, individuals reared at 18C had higher levels of swimming activity and higher survival rates when exposed to a crayfish predator. Findings suggest that physiological and behavioral phenotypes induced by early life stress may be adaptive during subsequent life stages in high-stress contexts such as exposure to predatorsIn Chapter 2, I further explored the adaptive potential of stress-related phenotypes. Since stressed females can provision eggs with elevated cortisol that potentially prepares offspring for high-stress conditions, I investigated outcomes of a match or mismatch between egg cortisol and offspring stress levels. Individuals that experienced both high egg cortisol and high stress had reduced cortisol reactivity to an acute stressor, but only in one of two families. Results suggest that family (genetic) effects may mediate the interaction of maternal and offspring stress experiences. The largest differences in swimming activity occurred between the "mismatch" treatments, indicating that the combination of egg cortisol and offspring stress is more important in determining offspring behavior than is egg cortisol or offspring stress alone. In Chapter 3, I evaluated the role of stress in conservation programs by comparing stress levels, behavior, and predation rates for hatchery-produced and wild-caught lake sturgeon larvae. Cortisol levels did not indicate that hatchery-produced individuals were more stressed, but cortisol reactivity to an acute stressor disappeared for both hatchery-produced and wild-caught larvae after 9 days in the hatchery. Predation rates increased over time for larvae from both treatments, suggesting that the hatchery environment may inhibit survival even though individuals do not exhibit high stress. Results highlight that effects of captive rearing become evident after only a short duration spent in captivity during early ontogeny. In Chapter 4, I investigated stress-related effects of encounters with aquatic insects commonly found in stream substrate during the free embryo stage. Lake sturgeon experienced stress proportional to the amount of predation risk experienced. Individuals that encountered Perlidae (obligate predators) had high mortality as well as elevated cortisol and cortisol reactivity to an acute stressor. Individuals that encountered Isonychiidae (facultative predators) had slightly elevated mortality compared to individuals that encountered no insects, and had slightly elevated cortisol levels and cortisol reactivity. Results indicate early life stress as a mechanism by which nonlethal predator interactions impact lake sturgeon, indicating the importance of community-level ecological context in predicting outcomes for species of conservation concern.

Effects of Temperature on the Routine Metabolic Rate of Juvenile Shortnose Sturgeon (acipenser Brevirostrum)

Author : Vasiliki R. Papadopoulos
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (795 download)

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Book Synopsis Effects of Temperature on the Routine Metabolic Rate of Juvenile Shortnose Sturgeon (acipenser Brevirostrum) by : Vasiliki R. Papadopoulos

Download or read book Effects of Temperature on the Routine Metabolic Rate of Juvenile Shortnose Sturgeon (acipenser Brevirostrum) written by Vasiliki R. Papadopoulos and published by . This book was released on 2011 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Habitat Structure

Author : S.S. Bell
Publisher : Springer Science & Business Media
ISBN 13 : 9401130760
Total Pages : 451 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Habitat Structure by : S.S. Bell

Download or read book Habitat Structure written by S.S. Bell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: We conceived the idea for this book after teaching a graduate seminar on 'Habitat Complexity' at The University of South Florida. Discussions during the seminar led us to conclude that similar goals were to be found in studies of the topic that spanned the breadth of ecological research. Yet, the exact meaning of 'habitat structure', and the way in which it was measured, seemed to differ widely among subdisciplines. Our own research, which involves several sorts of ecology, convinced us that the differences among subdisciplines were indeed real ones, and that they did inhibit communica tion. We decided that interchange of ideas among researchers working in marine ecology, plant-animal interactions, physiological ecology, and other more-or-less independent fields would be worthwhile, in that it might lead to useful generalizations about 'habitat structure'. To foster this interchange of ideas. we organized a symposium to attract researchers working with a wide variety of organisms living in many habitats, but united in their interest in the topic of 'habitat structure'. The symposium was held at The University of South Florida's Chinsegut Hill Conference Center, in May. 1988. We asked participants to think about 'habitat structure' in new ways; to synthesize important, but fragmented, information; and. perhaps. to consider ways of translating ideas across systems. The chapters contained in this book reflect the participants' attempts to do so. The book is divided into four parts, by major themes that we have found useful categorizations.

Biology of Stress in Fish

Author : Carl B. Schreck
Publisher : Academic Press
ISBN 13 : 0128027371
Total Pages : 604 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Biology of Stress in Fish by : Carl B. Schreck

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

The State of the World’s Aquatic Genetic Resources for Food and Agriculture

Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9251316082
Total Pages : 291 pages
Book Rating : 4.2/5 (513 download)

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Book Synopsis The State of the World’s Aquatic Genetic Resources for Food and Agriculture by : Food and Agriculture Organization of the United Nations

Download or read book The State of the World’s Aquatic Genetic Resources for Food and Agriculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-07-24 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conservation, sustainable use and development of aquatic genetic resources (AqGR) is critical to the future supply of fish. The State of the World’s Aquatic Genetic Resources for Food and Agriculture is the first ever global assessment of these resources, with the scope of this first Report being limited to cultured AqGR and their wild relatives, within national jurisdiction. The Report draws on 92 reports from FAO member countries and five specially commissioned thematic background studies. The reporting countries are responsible for 96 percent of global aquaculture production. The Report sets the context with a review of the state of world’s aquaculture and fisheries and includes overviews of the uses and exchanges of AqGR, the drivers and trends impacting AqGR and the extent of ex situ and in situ conservation efforts. The Report also investigates the roles of stakeholders in AqGR and the levels of activity in research, education, training and extension, and reviews national policies and the levels of regional and international cooperation on AqGR. Finally, needs and challenges are assessed in the context of the findings from the data collected from the countries. The Report represents a snapshot of the present status of AqGR and forms a valuable technical reference document, particularly where it presents standardized key terminology and concepts.

Sturgeons and Paddlefish of North America

Author : G.T.O LeBreton
Publisher : Springer Science & Business Media
ISBN 13 : 1402028334
Total Pages : 336 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Sturgeons and Paddlefish of North America by : G.T.O LeBreton

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.

Physiological Adaptations to Swimming in Fish

Author : Josep V. Planas
Publisher : Frontiers Media SA
ISBN 13 : 2889452468
Total Pages : 90 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis Physiological Adaptations to Swimming in Fish by : Josep V. Planas

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.