Performance and Morphological Diversity Associated with Gymnotiform Locomotion PDF Download
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Author: Katrina Whitlow
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
Fish have evolved a great variety of swimming modes and morphologies. Theory suggests that the morphology of median and paired fin swimmers like knifefish specializes them for maneuvering while inhibiting their performance in sustained and acceleratory swimming. However, this idea has not been explicitly tested and the link between shape and swimming mode in this group is poorly understood. This study compares morphological measurements of 116 species (51 knifefish) across four orders to investigate the diversity of shape in knifefish and closely related species. Sprint speeds, escape responses, and cost of transport were measured in 7 species (5 knifefish) to understand the physiological performance of these fish. Results indicated morphological constraints and unexpectedly high swimming performance associated with gymnotiform locomotion. Together, these data test common hypotheses in the field of fish swimming and provide a clearer picture of the evolution of diversity in fish locomotion.
Author: Katrina Whitlow
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
Fish have evolved a great variety of swimming modes and morphologies. Theory suggests that the morphology of median and paired fin swimmers like knifefish specializes them for maneuvering while inhibiting their performance in sustained and acceleratory swimming. However, this idea has not been explicitly tested and the link between shape and swimming mode in this group is poorly understood. This study compares morphological measurements of 116 species (51 knifefish) across four orders to investigate the diversity of shape in knifefish and closely related species. Sprint speeds, escape responses, and cost of transport were measured in 7 species (5 knifefish) to understand the physiological performance of these fish. Results indicated morphological constraints and unexpectedly high swimming performance associated with gymnotiform locomotion. Together, these data test common hypotheses in the field of fish swimming and provide a clearer picture of the evolution of diversity in fish locomotion.
Author: William H. Dantzler
Publisher:
ISBN:
Category : Physiology, Comparative
Languages : en
Pages : 776
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Book Description
Author: Gene Helfman
Publisher: John Wiley & Sons
ISBN: 1444311905
Category : Technology & Engineering
Languages : en
Pages : 736
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Book Description
The second edition of The Diversity of Fishes represents a major revision of the world’s most widely adopted ichthyology textbook. Expanded and updated, the second edition is illustrated throughout with striking color photographs depicting the spectacular evolutionary adaptations of the most ecologically and taxonomically diverse vertebrate group. The text incorporates the latest advances in the biology of fishes, covering taxonomy, anatomy, physiology, biogeography, ecology, and behavior. A new chapter on genetics and molecular ecology of fishes has been added, and conservation is emphasized throughout. Hundreds of new and redrawn illustrations augment readable text, and every chapter has been revised to reflect the discoveries and greater understanding achieved during the past decade. Written by a team of internationally-recognized authorities, the first edition of The Diversity of Fishes was received with enthusiasm and praise, and incorporated into ichthyology and fish biology classes around the globe, at both undergraduate and postgraduate levels. The second edition is a substantial update of an already classic reference and text. Companion resources site This book is accompanied by a resources site: www.wiley.com/go/helfman The site is being constantly updated by the author team and provides: · Related videos selected by the authors · Updates to the book since publication · Instructor resources · A chance to send in feedback
Author:
Publisher:
ISBN:
Category : Physiology
Languages : en
Pages : 788
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Book Description
Author: Bernardo Baldisserotto
Publisher: Academic Press
ISBN: 0128158735
Category : Nature
Languages : en
Pages : 358
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Book Description
Biology and Physiology of Freshwater Neotropical Fish is the all-inclusive guide to fish species prevalent in the neotropical realm. It provides the most updated systematics, classification, anatomical, behavioral, genetic, and functioning systems information on freshwater neotropical fish species. This book begins by analyzing the differences in phylogeny, anatomy, and behaviour of neotropical fish. Systems such as cardiovascular, respiratory, renal, digestive, reproductive, muscular, and endocrine are described in detail. This book also looks at the effects of stress on fish immune systems, and how color and pigmentation play into physiology and species differentiation. Biology and Physiology of Freshwater Neotropical Fish is a must-have for fish biologists and zoologists. Students in zoology, ichthyology, and fish farming will also find this book useful for its coverage of some of the world’s rarest and least-known fish species. Features chapters written by top neotropical fish researchers and specialists Discusses environmental effects on neotropical fishes, including climate change and pollution Details the phylogenetic occurrence of electroreceptors and electric organs in fish
Author: Bernhard Grzimek
Publisher:
ISBN:
Category : Zoology
Languages : en
Pages : 552
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Book Description
Author: Farah Abbas Naser
Publisher: World Scientific
ISBN: 9811237417
Category : Technology & Engineering
Languages : en
Pages : 208
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Book Description
This book provides a simplified description of how to design an underwater swimming robot, inspired by the mechanism of the Labriform mode of fish. This style of swimming depends on the pectoral fins only as a main locomotor for movement. A unique model with fins having a concave shape allows the highest thrust force to be achieved during the power period and the lowest drag force during the recovery period, especially if the velocity values between the powering and recovery periods are manipulated.Besides the ability to swim quickly, the proposed model was also inspired by a method of maneuvering based on the principle of differential drive for two-wheel mobile robot, achieving the minimum turning radius by controlling the speed of the rowing fins.Also, by applying the technique of the diving model used by gliders, the robot achieves underwater gliding by changing the center of the body's mass. Thus, the robot obtains the ability to dive and float in a manner similar to the Sawtooth wave.All the mentioned tasks were conducted via laboratory experiments and proven to be both effective and efficient.
Author: Cornelis Groot
Publisher: UBC Press
ISBN: 9780774859868
Category : Nature
Languages : en
Pages : 534
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Book Description
Every year, countless juvenile Pacific salmon leave streams and rivers on their migration to feeding grounds in the North Pacific Ocean and the Bering Sea. After periods ranging from a few months to several years, adult salmon enter rivers along the coasts of Asia and North America to spawn and complete their life cycle. Within this general outline, various life history patterns, both among and within species, involve diverse ways of exploiting freshwater, estuarine, and marine habitats. There are seven species of Pacific salmon. Five (coho, chinook chum, pink, and sockeye) occur in both North America and Asia. Their complex life histories and spectacular migrations have long fascinated biologists and amateurs alike. Physiological Ecology of Pacific Salmon provides comprehensive reviews by leading researchers of the physiological adaptations that allow Pacific Salmon to sustain themselves in the diverse environments in which they live. It begins with an analysis of energy expenditure and continues with reviews of locomotion, growth, feeding, and nutrition. Subsequent chapters deal with osmotic adjustments enabling the passage between fresh and salt water, nitrogen excretion and regulation of acid-base balance, circulation and gas transfer, and finally, responses to stress. This thorough and authoritative volume will be a valuable reference for students and researchers of biology and fisheries science as they seek to understand the environmental requirements for the perpetuation of these unique and valuable species.
Author: Nelson R Cabej
Publisher: Elsevier
ISBN: 012415851X
Category : Science
Languages : en
Pages : 847
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Book Description
This is the first and only book, so far, to deal with the causal basis of evolution from an epigenetic view. By revealing the epigenetic "user" of the "genetic toolkit", this book demonstrates the primacy of epigenetic mechanisms and epigenetic information in generating evolutionary novelties. The author convincingly supports his theory with a host of examples from the most varied fields of biology, by emphasizing changes in developmental pathways as the basic source of evolutionary change in metazoans. Original and thought provoking--a radically new theory that overcomes the present difficulties of the theory of evolution Is the first and only theory that uses epigenetic mechanisms and principles for explaining evolution of metazoans Takes an integrative approach and shows a wide range of learning
Author: Elena Choleris
Publisher: Cambridge University Press
ISBN: 0521190355
Category : Medical
Languages : en
Pages : 409
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Book Description
A comparative overview of the effects of neuropeptides on behavior, examining parallel findings in both humans and non-human animals.
