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Book The Spiny Dogfish  Squalus Acanthias  in the Northeast Pacific and a History of Its Utilization

Download or read book The Spiny Dogfish Squalus Acanthias in the Northeast Pacific and a History of Its Utilization written by K. S. Ketchen and published by Fisheries and Oceans, Scientific Information and Publications Branch. This book was released on 1986-01-01 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Spiny Dogfish  Squalus Acanthias  in the Northeastern Pacific

Download or read book The Spiny Dogfish Squalus Acanthias in the Northeastern Pacific written by Dayton L. Alverson and published by . This book was released on 1963 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Essential Fish Habitat Source Document

Download or read book Essential Fish Habitat Source Document written by Donald G. McMillan and published by . This book was released on 1999 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Spiny Dogfish  Squalus Acanthias  in the Northeastern Pacific  Classic Reprint

Download or read book The Spiny Dogfish Squalus Acanthias in the Northeastern Pacific Classic Reprint written by Dayton L. Alverson and published by Forgotten Books. This book was released on 2017-11-24 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Spiny Dogfish (Squalus Acanthias) In the Northeastern Pacific Use of dogfish as canned petfood is open to some of the same objections, and many canners also object to sharks because their tough hides jarn the fish grinders at petfood plants. Installa tion of grinders of different design would over come the latter objection, but as long as there is a steady supply of the many low-cost and otherwise underutilized fishes currently being used in petfoods, development of a petfood market for dogfish seems unlikely. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Distribution and Life History of the Spiny Dogfish  Squalus Acanthias  Off the Oregon and Washington Coasts

Download or read book Distribution and Life History of the Spiny Dogfish Squalus Acanthias Off the Oregon and Washington Coasts written by Jaclyn M. Richards and published by . This book was released on 2004 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Spiny Dogfish  squalus Acanthias  in the Northeastern Pacific

Download or read book The Spiny Dogfish squalus Acanthias in the Northeastern Pacific written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Life History  Demography  and Ecology of the Spiny Dogfish  Squalus Acanthias  in the Gulf of Alaska

Download or read book Life History Demography and Ecology of the Spiny Dogfish Squalus Acanthias in the Gulf of Alaska written by Cindy Ann Tribuzio and published by . This book was released on 2010 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The spiny dogfish (Squalus acanthias) is a small, cosmopolitan shark species, common in sub-tropical and sub-arctic waters. The species is often targeted commercially in most areas of the world throughout it's range, and in some cases it is overfished or the subject of conservation concern. In the Gulf of Alaska, spiny dogfish are not targeted and not generally retained, but incidental catches can be high for this schooling species. Previously, biological parameters for spiny dogfish in the Gulf of Alaska were assumed from estimates for this specie's neighboring areas, including British Columbia and Washington State. The purpose of this study was to examine spiny dogfish in the Gulf of Alaska and estimate important parameters for stock assessment in four stages: (1) general biology, distribution, and life history; (2) modeling age and growth; (3) population demographic modeling; and (4) ecological interactions revealed by diet analysis. Spiny dogfish are similar in length in the Gulf of Alaska to neighboring regions, but mature at larger sizes and have a greater fecundity than reported elsewhere. There is high natural variability in estimated ages for the species, which is reflected in the poor lit of the growth models, possibly owing to measurement error from using the dorsal fin spine as the aging structure. A two-phase growth model provided the statistical best fit. However, questions were raised about the biological interpretation of the model and whether more traditional models (e.g., von Bertalanffy and Gompertz) may be more appropriate. Using the life-history and growth data, Leslie matrix type, age- and stage based demographic models were created to estimate sustainable fishing mortality rates and to examine the risk of harvest scenarios. Female Gulf of Alaska spiny dogfish can support up to a 3% annual harvest rate; fisheries that target juveniles have the greatest risk of population decline below threshold levels. Spiny dogfish are generalist opportunistic feeders that feed on whichever prey is available, however shrimp are the most important prey type, followed by cephalopods. Results of this study will be used in future ecosystem modeling and stock assessments for this species. Waking into account the history of targeted fisheries for the species on the U.S. east coast and in British Columbia and Washington, as well as the susceptibility of the species to overfishing, fishery managers will need to take a cautious approach should a target fishery develop in the Gulf of Alaska"--Leaves iii-iv.

Book Northeast Pacific Shark Biology  Research and Conservation Part B

Download or read book Northeast Pacific Shark Biology Research and Conservation Part B written by and published by Academic Press. This book was released on 2017-10-24 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northeast Pacific Shark Biology, Research and Conservation, Part B, Volume 78, the latest release in the Advances in Marine Biology series contains updated chapters that focus on a variety of topics, including, but not limited to, an Introduction to Northeast Pacific shark biology, ecology, and conservation, Shark Interactions with Directed and Incidental Fisheries in the Northeast Pacific Ocean: historic and current encounters and challenges for shark conservation, An Introduction to modeling abundance and demographic parameters in shark populations, and Sharks in Captivity: The Role of Husbandry, Breeding, Education and Citizen Science in Shark Conservation. Specialty areas in this longstanding series include marine science, both applied and basic, a wide range of topical areas from all areas of marine ecology, oceanography, fisheries management and molecular biology, and the full range of geographic areas from polar seas, to tropical coral reefs are included making this an ideal reference and resource for postgraduates and researchers in a variety of fields. Reviews articles on the latest advances in marine biology Authored by leading figures in their respective fields of study Presents materials that are widely used by managers, students, and academic professionals in the marine sciences Provides value to anyone studying bottlenose dolphins, deep-sea macrofauna, marine invertebrates, pinna nobilis and ecology, amongst other study areas

Book Journal of Northwest Atlantic Fishery Science

Download or read book Journal of Northwest Atlantic Fishery Science written by and published by . This book was released on 1980 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The International Trade and Fishery Management of Spiny Dogfish  Squalus Acanthias  in Light of CITES List Insertion

Download or read book The International Trade and Fishery Management of Spiny Dogfish Squalus Acanthias in Light of CITES List Insertion written by Andrea Dell'Apa and published by . This book was released on 2013 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spiny dogfish (Squalus acanthias) is a commercial shark species that was recently considered, unsuccessfully, for inclusion in trade-regulation lists due to international concern about its conservation status. The major commercial demand for the species is from Europe, where the Northeast Atlantic stock has been managed unsuccessfully because of dysfunctionalities of EU fishery governance. The demand from the EU market is primarily for adult females, with the U.S. North Atlantic stock being one of the major contributors to this market. This primarily female fishery has led to overexploitation and a drastic reduction in both adult female biomass and juvenile recruitment in the U.S. Atlantic stock, forcing the adoption of a Fishery Management Plan (FMP) under the requirements of the U.S. fishery management system. The stock is now considered rebuilt and the U.S. Atlantic spiny dogfish fishery was recently certified as sustainable. However, new management strategies are needed to maintain fishery sustainability in the long-term. The first objective of this study was to analyze the EU trade dynamic changes associated with the introduction of the FMP by employing social network analysis. Results indicate that the EU market demand favoured the development of dogfish fisheries in several countries in order to supply to the decrease in U.S. export, eventually affecting the global conservation status of the species. Moreover, the species listing for trade regulation would benefit the U.S. and will enhance the conservation of other regional stocks worldwide. The second objective of this study was to investigate on the sex ratio changes in fishery-dependent surveys conducted off Cape Cod, Massachusetts; and to evaluate these results in light of the sexual segregation occurring in the species. Results support the development of a male-only directed fishery off the northeast portion of the Cape Cod peninsula, based on season (summer and early fall) and time of the day (early morning). This fishery would likely enhance the sustainability of the local spiny dogfish populations by reducing fishing pressure on the adult female component. Finally, results suggest that sexual segregation in S. acanthias off Cape Cod corresponds to female avoidance of males, coupled with specific mating and/or feeding behavior by males.

Book The Life history of the Spiny Dogfish  squalus Acanthias

Download or read book The Life history of the Spiny Dogfish squalus Acanthias written by Wilfred Templeman and published by St. John's, Nfld. : Department of Natural Resources. This book was released on 1944 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Report of the Second FAO Ad Hoc Expert Advisory Panel for the Assessment of Proposals to Amend Appendices I and II of CITES Concerning Commercially exploited Aquatic Species

Download or read book Report of the Second FAO Ad Hoc Expert Advisory Panel for the Assessment of Proposals to Amend Appendices I and II of CITES Concerning Commercially exploited Aquatic Species written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2007 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Panel met in response to the agreement by the 25th and 26th sessions of the FAO Committee on Fisheries (COFI) to discuss proposals regarding the Convention on International Trade in endangered Species of Wild Fauna and Flora (CITES), The objectives of the Panel were to assess each proposal from a scientific perspective in accordance with the CITES biological listing criteria; and to consider technical aspects of the proposal in relation to biology, ecology, trade and management issues, as well as the likely effectiveness for conservation. Seven proposals were evaluated by the Panel.

Book Immunobiology of the Shark

Download or read book Immunobiology of the Shark written by Sylvia L. Smith and published by CRC Press. This book was released on 2014-12-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Immunity studies in sharks over the past three decades have produced some remarkable discoveries. If one message rings true, it is that alternative animal model systems, such as sharks and their relatives, have contributed very substantially to a better understanding of the development evolution of our own immune system. Immunobiology of the Shark describes the cellular, genetic, and molecular specifics of immune systems in sharks. Diverse approaches were employed to study the immunobiology of the shark from basic microscopic observations to detailed genome annotation. The book also raises a series of fascinating questions, which can be addressed experimentally using today’s technology. This book will be a valuable resource for mainstream immunologists, comparative immunologists, geneticists, ecologists, evolutionary biologists, and investigators engaged in shark research. The book also aims to illustrate the magnificence of these animals as model systems and underscores the importance of their study to further understand their complex, and often enigmatic, biology.