Download or read book Spat Settlement Patterns of the Purple hinge Rock Scallop Crassadoma Gigantea in Humboldt County California written by William P. Osborne and published by . This book was released on 1991 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive Biology of Farmed Purple hinged Rock Scallop Crassadoma Gigantea written by Molly Jackson and published by . This book was released on 2021 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Native species are increasingly chosen for aquaculture expansion to avoid negative environmental impacts associated with the introduction of foreign species. However, the culture of native species is not without risks, as interbreeding with wild populations and can impact naturally occurring genetic diversity and population structure. The risk of adverse impacts depends, among other factors, on the frequency of interbreeding and genetic diversity of hatchery produced animals. Thus, cultured stocks that reach sexual maturity prior to harvest and have reduced genetic diversity because of small effective broodstock size, Nb, are particularly risky. Here, we evaluated both factors, first by establishing age and size at maturity and second, by determining the distribution of reproductive success and Nb in a voluntary mass spawn of purple hinged rock scallop, Crassadoma gigantea. Age and size at first maturation were determined by repeat sampling of a known age cohort grown in Dabob Bay WA for 25 months. To establish the effects of local environment on first maturation additional scallops were deployed in Totten Inlet, Dabob Bay, and Neah Bay for ten months and sampled once at the end of growout. Size and age at first maturation was 55.2 mm shell height and 25.1 months of age, well before the projected harvest size and age for cultured C. gigantea. The additive effect of age and size produced the most accurate prediction of first maturation in C. gigantea, and there was a significant effect of environment on first maturation suggesting that under optimal conditions first maturation could be even earlier than our size and age prediction. To determine the distribution of reproductive success in a mass spawn of cultured C. gigantea, scallops were deployed at the three Washington State sites were sequenced using restriction site-associated DNA sequencing to identify SNPs for parentage assignment in COLONY. Three methods were then used to calculate the Nb from sibship assignments (COLONY), parentage assignment without parents (PwoP) and linkage disequilibrium (LDNe). A total of 408 loci were identified for parentage analysis and offspring were assigned to 74.5% of candidate parents at one or more sites. Survival was family specific, as Nb was significantly different across sites and Nb/N ratios were significantly lower than 1.00 at all sites (Totten Inlet=0.33, Dabob Bay=0.26, Neah Bay=0.15). Low Nb/N ratios suggest a loss of genetic diversity in the hatchery which is worsened by mortality on during growout and are an important consideration when determining the risk of genetic diversity loss in wild populations in the event of interbreeding. Unless wild population Ne/N ratios are orders of magnitude lower than their cultured conspecifics than escapes will reduce the genetic diversity of wild populations. Our study determined that interbreeding between cultured and wild C. gigantea is possible, but the magnitude of this risk is reduced by the likely protandry and skewed sex ratio of young C. gigantea. In addition, increasing the number of broodstock used in each spawn, equalizing parental contributions prior to fertilization and using partial or full factorial spawn designs will help increase the Nb of cultured C. gigantea.
Download or read book Comparative Studies on Growth of the Purple hinge Rock Scallop Hinnites Multirugosus Gale in the Marine Waters of Southern California written by James Bryce Monical and published by . This book was released on 1980 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California s Living Marine Resources written by William S. Leet and published by University Of California, Division of Agriculture and Natural Resources; Califorinia Sea Grant. This book was released on 2001 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 592-page spiral-bound reference provides a baseline of information for all those involved with managing living marine resources in California and chronicles changes that have occurred in many of the state’s fisheries. Organized by marine ecosystems: bays and estuaries, nearshore and offshore. Includes illustrated species descriptions with details of biological knowledge, fishery history, landings data, population status and references. Also includes sections on marine birds and mammals and appendices containing management considerations (by species), a glossary of technical terms and acronyms and fishing gear illustrations. Jointly produced by the California Sea Grant Extension Program and the California Department of Fish and Game following the passage of the Marine Life Protection Act in January 1999.
Download or read book The Suitability of the Purple hinge Rock Scallop to Marine Aquaculture written by David Leonhardt Leighton and published by . This book was released on 1981 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Living Marine Resources of the Eastern Central Atlantic written by Kent E. Carpenter and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each family generally has an account summarizing family diagnostic characters, biological and fisheries information, notes on similar families occurring in the area, a key to species, a check list of species, and a short list of relevant literature. Families that are less important to fisheries include an abbreviated family account.
Download or read book The Eastern Oyster written by Victor S. Kennedy and published by University of Maryland Sea Grant Publications. This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1966 Congress passed the National Sea Grant College Program Act to promote marine research, education, and extension services in institutions along the nation's ocean and Great Lakes coasts. In Maryland a Sea Grant Program -- a partnership among federal and state governments, universities, and industries -- began in 1977, and in 1982 the University of Maryland was named the nation's seventeenth Sea Grant College. The Maryland Sea Grant College focuses its efforts on the Chesapeake Bay, with emphasis on the marine concerns of fisheries, seafood technology, and environmental quality. The first comprehensive review of the biology of the eastern oyster in more than thirty years. The twenty-one chapters synthesize every aspect of oyster biology -- for instance, general anatomy, physiology, the circulatory system, reproduction, genetics, diseases -- and issues related to management and aquaculture.
Download or read book Pacific Coast Fisheries written by and published by . This book was released on 1965 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishes A Guide to Their Diversity written by Philip A. Hastings and published by Univ of California Press. This book was released on 2015-01-10 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a coursebook and reference guide for ichthyology courses that will also serve as a tool for ichthyologists, fisheries scientists, marine biologists, and vertebrate zoologists. It will cover the basic anatomy and diversity of all 62 orders of fishes, focusing on the distinguishing characteristics of approximately 180 of the most commonly encountered fish families. Each family will be diagnosed with easily observed characteristics and clear photos--many in color and from living specimens. This guide will be distinctive through the use of photographs of preserved specimens primarily from the Scripps Institution of Oceanography Marine Vertebrate Collection, supplemented by radiographs and additional illustrations of key characters. The goal is to give ichthyology students, fisheries scientists, marine biologists, vertebrate zoologists, and others with an interest or stake in the diversity of fishes a broad overview of the morphological diversity of fishes, arranged in a modern classification system. For students, it's a natural complement to primary ichthyology textbooks, which don't cover the breadth of morphological characteristics necessary to identify fish"--Provided by publisher.
Download or read book Bivalve Molluscs written by Elizabeth Gosling and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bivalve Molluscs is an extremely comprehensive book coveringall major aspects of this important class of invertebrates. As wellas being an important class biologically and ecologically, many ofthe bivalves are fished and cultured commercially (e.g. mussels,oysters, scallops and clams) in a multi-billion dollar worldwideindustry. Elizabeth Gosling who has a huge wealth of research, teachingand hands on experience working with bivalves, has written alandmark book that will stand for many years as the standard workon the subject. Chapters in Bivalve Molluscs covermorphology, ecology, feeding, reproduction, settlement andrecruitment, growth, physiology, fisheries, aquaculture, genetics,diseases and parasites, and public health issues. A fullunderstanding of many of these aspects is vital for all thoseworking in bivalve fisheries and culture. An essential purchase for anyone concerned with this importantclass of animals, copies of Bivalve Molluscs should be onthe shelves of biologists, ecologists, environmental scientists,fisheries scientists and personnel within the aquaculture industry.Copies of the book should be available in all libraries andresearch establishments where these subjects are studied ortaught. Elizabeth Gosling is based at the Galway-Mayo Instituteof Technology, Galway, Ireland.
Download or read book Biology of the Hard Clam written by J.N. Kraeuter and published by Elsevier. This book was released on 2001-04-26 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hard clam, Mercenaria mercenaria, is an important commercial, recreational and ecological inhabitant of coastal bays along the east and gulf coasts of the United States. This title represents the first state of the art summary of existing knowledge of the hard clam by experts in various disciplines. Containing a compendium of literature on the hard clam, comprehensive chapters on various aspects of its biology as well as summaries of knowledge including the gray literature on this economically important species, this volume represents a comprehensive source of biological information for managers and researchers interested in shallow marine and estuarine ecosystems. Research students and managers charged with maintaining coastal ecosystems will also find a wealth of background material. The first synthesis of available information on the mercenaria mercenaria, this title is a response to the needs of individuals involved in hard clam aquaculture and scientists interested in molluscan biology, coastal ocean ecology and similar fields. Over 2300 documents have been synthesized, and chapter authors have added unpublished information as well as new material.
Download or read book Marine Bivalve Molluscs written by Elizabeth Gosling and published by John Wiley & Sons. This book was released on 2015-07-07 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Bivalve Molluscs Marine Bivalve Molluscs is a comprehensive and thoroughly updated Second Edition of Bivalve Molluscs, covering all major aspects of this important class of invertebrates. As well as being an important class biologically and ecologically, many of the bivalves are fished and cultured commercially (e.g. mussels, oysters, scallops and clams) in a multi-billion dollar worldwide industry. Elizabeth Gosling has written a landmark book that will stand for many years as the standard work on the subject. Chapters in Marine Bivalve Molluscs cover morphology, ecology, feeding, reproduction, settlement and recruitment, growth, physiology, fisheries, aquaculture, genetics, diseases and parasites, and public health issues. A full understanding of many of these aspects is vital for all those working in bivalve fisheries and culture. An essential purchase for anyone concerned with this important class of animals, copies of Marine Bivalve Molluscs should be on the shelves of biologists, ecologists, environmental scientists, fisheries scientists and personnel within the aquaculture industry. Copies of the book should be available in all libraries and research establishments where these subjects are studied or taught. REVIEWS OF THE FIRST EDITION An admirable achievement...a valuable addition to marine sciences libraries everywhere. The back cover of this book says that it is a landmark text that will stand for many years as the standard work on this subject. I can only agree with this sentiment. ~ Aquaculture A welcome addition to the literature and provides the reader with a comprehensive overview of biological and environmental factors that affect and control both natural populations of marine bivalves and culture operations. ~ Aquaculture International The author has done an admirable job in compiling a wealth of information into a readable text. ~ Transactions of the American Fisheries Society Will serve well as a description of much of both the experimental biology and the aquaculture of bivalves. ~ Journal of Experimental Marine Biology and Ecology Provides excellent reviews of all major aspects...an extremely important reference for anyone engaged in bivalve research, fisheries management, and aquaculture. ~ Quarterly Review of Biology The book is very readable, in an easy style. It is well illustrated and there is a wealth of data and statistics presented. ~ Bulletin of the Malacological Society of London
Download or read book British Bivalve Seashells written by Norman Tebble and published by Stationery Office Books (TSO). This book was released on 1976 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Invader written by Sylvia Behrens Yamada and published by . This book was released on 2001 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Writing to educate those concerned with sea life in the Pacific Northwest, Yamada (zoology, Oregon State U., Corvallis) traces the generally devastating impact of the invasive European green crab with reference to research carried out in New England, California, Oregon, South Africa, Australia, and Tasmania. A full description of the biology and life history of the European green crab is provided, along with photos, glossary, list of references, and descriptive table of Pacific Northwest crabs. Annotation copyrighted by Book News, Inc., Portland, OR.
Download or read book Structural and Systematic Conchology An Introduction to the Study of the Mollusca written by George Washington Tryon and published by BoD – Books on Demand. This book was released on 2024-05-01 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprint of the original, first published in 1883.
Download or read book British Conchology Or An Account of the Mollusca written by Jeffreys John Gwyn and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book European Seashells Polyplacophora Caudofoveata Solenogastra Gastropoda written by Guido T. Poppe and published by . This book was released on 1991 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
