Download or read book Life History and Management of Spiny Dogfish Squalus Acanthias Off the Northeastern United States written by Marta F. Nammack and published by . This book was released on 1982 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Life History Characteristics of the Spiny Dogfish Squalus Acanthias of North Carolina written by Lisa Nicole Litwak and published by . This book was released on 2016 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

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:

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:

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.

Download or read book Updated Life History and Population Structure Assessment of Spiny Dogfish Squalus Acanthias in the Gulf of Maine written by Walter Bubley and published by . This book was released on 2010 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Essential Fish Habitat Source Document written by Linda Louise Stehlik and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book ESSENTIAL FISH HABITAT SOURCE DOCUMENT SPINY DOGFISH SQUALUS ACANTHIAS LIFE HISTORY AND HABITAT NOAA TECHNICAL MEMORANDUM NMFS NE 150 written by United States. National Oceanic and Atmospheric Administration and published by . This book was released on 2000* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Distribution and Abundance Reproduction Growth and Life History Characteristics of the Spiny Dogfish Squalus Acanthias Linnaeus in New Zealand written by Stuart Michael Hanchet and published by . This book was released on 1986 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stock Structure Life History Fishery and Abundance Indices for Spiny Dogfish Squalus Acanthias in Atlantic Canada written by Steven E. Campana and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Life History of the Spiny Dogfish Squalus Acanthides and the Vitamin A Values of Dogfish Liver Oil written by Wilfred TEMPLEMAN and published by . This book was released on 1944 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

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 2017-03-12 with total page 36 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 jam 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.

Download or read book Sharks Rays and Chimaeras of California written by David Ebert and published by Univ of California Press. This book was released on 2003-05-08 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Ebert has herein assembled an enormous body of knowledge about California's 43 shark species ranging from shark and human behavior to taxonomic minutiae, along with up-to-date explanations of their ecology, status and fisheries. More importantly, his Herculean effort includes the often-overlooked 25 species of skates, rays and chimaeras. That, along with the fine illustrations of Mat Squillante, should answer any question that a student, diver, natural history buff, or recreational or commercial fisher might ask."—John E. McCosker, coauthor of Great White Shark "The timing of this publication is ideal given the status of some of California's elasmobranch populations and the need for a deeper understanding of their biology, ecology, and fishery management. The book is a comprehensive treatment—if one wants to find out the latest information on any species of shark or ray off California, this is the place to go. An outstanding work!"—Gregor M. Cailliet, Professor, Moss Landing Marine Laboratories, and Director, Pacific Shark Research Center