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Chondrichthyes

2017-12-20 Science
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Release : 2017-12-20
Genre : Science
Kind : eBook
Book Rating : 115/5 ( reviews)

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Book Synopsis Chondrichthyes by : Luis Fernando Rodrigues-Filho

Download or read book Chondrichthyes written by Luis Fernando Rodrigues-Filho. This book was released on 2017-12-20. Available in PDF, EPUB and Kindle. Book excerpt: Chondrichthyes are a group of cartilaginous fish, where we have sharks, rays, and chimeras as members. This group plays an important role in aquatic ecology, as they act as predators throughout the food chain (e.g., sharks). However, many populations of Chondrichthyes are threatened by several factors (increased direct fishing, high mortality rate as accompanying fauna, marine pollution, habitat destruction, etc.). These declines are evident in many parts of the world and have come to the attention of scientists, conservation organizations, the media, and the general public. Fisheries legislation regulating international fisheries markets has been amended to provide greater protection for this group along with other species of fish. However, little is known about these species, which reinforces the importance of studies in order to have a better understanding of the elasmobranch stocks, as well as to identify the influences of the anthropic action of fishing. In response to knowledge on the low sustainability of cartilaginous fish fisheries on a global scale, FAO has developed an international plan of action for the management and conservation of these fish, with the aim of developing and implementing national plans of action to ensure management and conservation of these stocks, having as main recommendation the collection of information about the Chondrichthyes, especially the sharks. Even so, this group is little known in terms of biodiversity, ecology, behavior, and a host of other characteristics relevant to this taxon, which is very worrying. Chondrichthyes - Multidisciplinary Approach attempts to portray to the readers up-to-date information on Chondrichthyes to promote an overview of the current taxon, serving as an indispensable source of access to more accurate and detailed information on shark rays and chimeras.

Reproductive Biology and Phylogeny of Chondrichthyes

2011-10-14 Nature
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Release : 2011-10-14
Genre : Nature
Kind : eBook
Book Rating : 001/5 ( reviews)

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Book Synopsis Reproductive Biology and Phylogeny of Chondrichthyes by : William C. Hamlett

Download or read book Reproductive Biology and Phylogeny of Chondrichthyes written by William C. Hamlett. This book was released on 2011-10-14. Available in PDF, EPUB and Kindle. Book excerpt: Internal fertilization is universal in chondrichthyan fishes and, as such, requires a suite of biological activities, including behavioral, morphological and physiological mechanisms, to ensure successful copulation and fertilization. This volume correlates available data and ideas concerning the development, reproductive morphology, function, and

Smiths’ Sea Fishes

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 582/5 ( reviews)

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Book Synopsis Smiths’ Sea Fishes by : Margaret M. Smith

Download or read book Smiths’ Sea Fishes written by Margaret M. Smith. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: Dr. D. S. Henderson, Chairman of the 1. L. B. Smith Institute of Ichthyology and Vice Chancellor of Rhodes University This book is a unique, international collaborative effort ranging all of the colour plates for the book. For the past of 76 scientists, representing 15 countries. Several skilled eight years, she has been assisted in the research, writing artists and photographers have also contributed to the and editing of the book by Dr. P. C. Heemstra. numerous and beautiful illustrations. Research done in It is essential for the proper management of the marine South Africa was supported by the Council for Scientific fish resources of southern Africa that we know what species and Industrial Research. Work on the book at the J.L.B. we are dealing with. This book will greatly facilitate the Smith Institute was also funded by the Department of identification of our fishes. It will thus be of vital import National Education and The Trustees of the Sea Fishes of ance to the understanding and wise use of our tremendously Southern Africa Book Fund. Expenses of visits by ichthy diverse and valuable fish fauna. ologists from overseas were defrayed by a grant from the We are proud of the affiliation of the J.L.B. Smith Insti John S. Schlesinger Foundation. tute with Rhodes University and happy to see the successful Although this book is an impressive contribution to the completion of this long-awaited work.

Chondrichthyes I

1981 Chondrichthyes, Fossil
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Release : 1981
Genre : Chondrichthyes, Fossil
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Chondrichthyes I by : Rainer Zangerl

Download or read book Chondrichthyes I written by Rainer Zangerl. This book was released on 1981. Available in PDF, EPUB and Kindle. Book excerpt:

Chondrichthyes - Multidisciplinary Approach

2017 Aquaculture. Fisheries. Angling
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Release : 2017
Genre : Aquaculture. Fisheries. Angling
Kind : eBook
Book Rating : 911/5 ( reviews)

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Book Synopsis Chondrichthyes - Multidisciplinary Approach by : Luis Fernando da Silva Rodrigues Filho

Download or read book Chondrichthyes - Multidisciplinary Approach written by Luis Fernando da Silva Rodrigues Filho. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: Chondrichthyes are a group of cartilaginous fish, where we have sharks, rays, and chimeras as members. This group plays an important role in aquatic ecology, as they act as predators throughout the food chain (e.g., sharks). However, many populations of Chondrichthyes are threatened by several factors (increased direct fishing, high mortality rate as accompanying fauna, marine pollution, habitat destruction, etc.). These declines are evident in many parts of the world and have come to the attention of scientists, conservation organizations, the media, and the general public. Fisheries legislation regulating international fisheries markets has been amended to provide greater protection for this group along with other species of fish. However, little is known about these species, which reinforces the importance of studies in order to have a better understanding of the elasmobranch stocks, as well as to identify the influences of the anthropic action of fishing. In response to knowledge on the low sustainability of cartilaginous fish fisheries on a global scale, FAO has developed an international plan of action for the management and conservation of these fish, with the aim of developing and implementing national plans of action to ensure management and conservation of these stocks, having as main recommendation the collection of information about the Chondrichthyes, especially the sharks. Even so, this group is little known in terms of biodiversity, ecology, behavior, and a host of other characteristics relevant to this taxon, which is very worrying. Chondrichthyes - Multidisciplinary Approach attempts to portray to the readers up-to-date information on Chondrichthyes to promote an overview of the current taxon, serving as an indispensable source of access to more accurate and detailed information on shark rays and chimeras.

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