Download or read book Additions to a Revision of the Shark Genus Carcharhinus written by J. A. F. Garrick and published by . This book was released on 1985 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Features of the valid nominal species of Aprionodon Gill (isodon Valenciennes) and Hypoprion Müller and Henle (hemiodon Valenciennes, macloti Müller and Henle, and signatus Poey), plus those of a previously unrecognized species here described as Carcharhinus leiodon n.sp., are examined and compared with those of Carcharhinus Blainville. Features studied include morphometrics, vertebral numbers and other vertebral characteristics, tooth numbers, color pattern, and some other aspects of external morphology. It is concluded that on these features C. Leiodon n.sp. is entirely encompassed within the parameters of Carcharhinus, and that, although A. isodon, H. hemiodon, H. macloti, and H. signatus each extend the range of diversity of Carcharhinus in one or more features, A. isodon is not uniquely different from Carcharhinus, and there is no common pattern of difference between the three species of Hypoprion and Carcharhinus. Accordingly, and because the nature of the teeth of Aprionodon and Hypoprion has been found insufficient to warrant generic distinction from Carcharhinus, the genera Aprionodon and Hypoprion are synonymised with Carcharhinus. A diagnosis and description are given for each of the above species. The descriptions include measurements, counts, and line illustrations that show the whole shark in lateral view, underside of head, nostril, and teeth. The geographic distribution is summarized, as are also the meager biological data available on number of embryos, size at birth, size at sexual maturity, and maximum size.
Download or read book Field Guide for Sharks of the Genus Carcharhinus written by Matthias Voigt and published by . This book was released on 2011 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sharks of the Genus Carcharhinus Associated with the Tuna Fishery in the Eastern Tropical Pacific Ocean written by Susumu Kato and published by . This book was released on 1964 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sharks of the Order Carcharhiniformes written by Leonard J. V. Compagno and published by . This book was released on 2003 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reprint of the book Sharks of the Order Carcharhiniformes, first published in 1988. The book is a general review, taxonomic revision and phylogenetic analysis of the carcharhinoids, the largest group of living sharks, which comprises almost 60% of the known shark species. Students of shark biology have been hampered by the lack of a comprehensive and rigorous account of shark morphology. With this work, Dr. Compagno offers not only the most comprehensive and detailed account of this important group but also one of the most comprehensive modern anatomic and phylogenetic studies on cartilaginous fishes available. It is an essential reference not only for researchers on carcharhinoids but also for those who study other families of sharks and for paleontologists interested in this ancient group of fishes. The book begins with a general account of carcharhinoid sharks. Chapters two through eleven include detailed discussions of character systems used in taxonomic and phylogenetic analysis of carcharhinoids. Chapter twelve defines the Order Carcharhiniformes, lists its families and includes a taxonomic key to the families. Chapters thirteen through twenty review the eight carcharhinoid families and chapter twenty-one is an extended discussion of the phylogeny of carcharhinoids with cladistic analysis of taxa at various levels. L. J. V. Compagno is Curator of Fishes and Head of the Shark Research Center at Iziko - Museums of Cape Town, South Africa.
Download or read book The Sharks of North America written by Jose I. Castro and published by OUP USA. This book was released on 2011-07-28 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete reference to all the sharks inhabiting North American waters, with excellent color illustrations of all the species.
Download or read book Elasmobranch Biodiversity Conservation and Management written by Sarah L. Fowler and published by IUCN. This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Darwin Elasmobranch Biodiversity Conservation and Management project in Sabah held a three-day international seminar that included a one-day workshop in order to highlight freshwater and coastal elasmobranch conservation issues in the region and worldwide, to disseminate the result of the project to other Malaysian states and countries, and to raise awareness of the importance of considering aspects of elasmobranch biodiversity in the context of nature conservation, commercial fisheries management, and for subsistence fishing communities. These proceedings contain numerous peer-reviewed papers originally presented at the seminar, which cover a wide range of topics, with particular reference to species from freshwater and estuarine habitats. The workshop served to develop recommendations concerning the future prospects of elasmobranch fisheries, biodiversity, conservation and management. This paper records those conclusions, which highlight the importance of elasmobranchs as top marine predators and keystone species, noting that permanent damage to shark and ray populations are likely to have serious and unexpected negative consequences for commercial and subsistence yields of other important fish stocks.
Download or read book Marine Fisheries Review written by and published by . This book was released on 1998 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sharks of the Open Ocean written by Merry D. Camhi and published by John Wiley & Sons. This book was released on 2009-01-21 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important and exciting title represents the first authoritative volume focussed on pelagic (open ocean) sharks as a group. Virtually every pelagic shark expert in the world has contributed to this landmark publication which includes the latest data and knowledge on pelagic shark biology, fisheries, management, and conservation. Pelagic sharks face unprecedented levels of exploitation in all the world's oceans through both direct fisheries and by-catch, and effective management for these species is contingent upon solid science and data, which this book brings together for the first time. All those involved in shark biology will need to have a copy of this book.
Download or read book NOAA Technical Report NMFS written by and published by . This book was released on 1984 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishes written by Alfredo Carvalho Filho and published by Literare Books. This book was released on 2023-08-02 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first large-scale work that allows the identification of more than 1,000 species of coastal marine fish along the Brazilian coast, from the Guianas to Argentina. With the publication of "Fishes of the Brazilian Coast", Alfredo Carvalho-Filho fills a fundamental gap in the knowledge of fish worldwide. The author has participated in the Workshops for the Assessment of the State of Conservation of Marine Actinopterygii Species at the Chico Mendes Institute for Biodiversity Conservation and gives lectures on Communications, Ichthyology and, among these, the one entitled "Biology and Marketing", with two disciplines so diverse gathered in a single presentation!
Download or read book Field Identification Guide to the Sharks and Rays of the Red Sea and Gulf of Aden written by Ramón Bonfil and published by Food & Agriculture Org.. This book was released on 2004 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a fully illustrated field guide for the identification of the sharks and rays most relevant to the fisheries of the Red Sea and Gulf of Aden. An extensive literature review and two field surveys in the region were carried out for the preparation of this document. A total of 49 sharks and 45 batoids reliably reported for the region are listed and those common in the fisheries or likely to be found through fisheries operations are fully treated. The guide includes sections on technical terms and measurements for sharks and batoids, and fully illustrated keys to those orders and families that occur in the region. Color plates for a large number of the species are included.
Download or read book A Preliminary Evaluation of the Status of Shark Species written by José Ignacio Castro and published by Food & Agriculture Org.. This book was released on 1999 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of shark species is reviewed based on the available data. A review of the history of shark fisheries demonstrates that intensive shark fisheries are not sustainable. Numerous problems are encountered in assessing shark populations: a general lack of biological and fishery data, lack of suitable models, and lack of validated age estimates. Sharks have an unusual combination of biological characteristics: slow growth and delayed maturation, long reproductive cycles, low fecundity and long life spans. These characteristics make them vulnerable to overfishing. A preliminary evaluation of the status of shark species is made on the basis of historical data, the reproductive potential of each species, and the level of exploitation of the species. In this document, exploited shark species are classified numerically according to their vulnerability. The majority of these species are listed as Category 1, indicating that there are not sufficient data to assess the species. Available data indicate that sharks are very vulnerable and are threatened by overexploitation in many parts of the world.
Download or read book National Oceanic and Atmospheric Administration Technical Report National Marine Fisheries Service written by and published by . This book was released on 1993 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sharks and Their Relatives II written by Jeffrey C. Carrier and published by CRC Press. This book was released on 2010-03-09 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the award-winning first volume, The Biology of Sharks and Their Relatives, published in 2004, the field has witnessed tremendous developments in research, rapid advances in technology, and the emergence of new investigators beginning to explore issues of biodiversity, distribution, physiology, and ecology in ways that eluded more traditional
Download or read book An Illustrated Pocket Guide to the Sharks of the World written by David A. Ebert and published by Princeton University Press. This book was released on 2014-06-16 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sharks are probably the most misunderstood animals on the planet. We all still have a lot to learn about these fascinating creatures, which are sadly more seriously threatened with extinction and in greater need of conservation and management action than any other major group of vertebrates. We have produced this guide not just because we and so many other people love sharks. It is also because their identification, whether of living animals, fishery catches or body parts sold at markets, is an essential tool to support shark conservation, fisheries management and international trade regulation, prevent further depletion of stocks, and enable their recovery. ● the first pocket guide to all 501 shark species ● all species illustrated and described ● handy, compact format with concise text ● a six-page guide to shark teeth identification ● an eight-page guide to the identification of the shark fins most commonly encountered in the fin trade Colour plates are by Marc Dando from the hugely acclaimed Sharks of the World: A Fully Illustrated Guide.
Download or read book Fisheries Review written by and published by . This book was released on 1986 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Check List of the Freshwater Fishes of South and Central America written by Roberto E. Reis and published by EDIPUCRS. This book was released on 2003 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
