Download or read book Selection and Breeding Programs in Aquaculture written by Trygve Gjedrem and published by Springer Science & Business Media. This book was released on 2005-04-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although aquaculture as a biological production system has a long history, systematic and efficient breeding programs to improve economically important traits in the farmed species have rarely been utilized until recently, except for salmonid species. This means that the majority of aquaculture production (more than 90 %) is based on genetically unimproved stocks. In farm animals the situation is vastly different: practically no terrestrial farm production is based on genetically unimproved and undomesticated populations. This difference between aquaculture and livestock production is in spite of the fact that the basic elements of breeding theory are the same for fish and shellfish as for farm animals. One possible reason for the difference is the complexity of reproductive biology in aquatic species, and special consideration needs to be taken in the design of breeding plans for these species. Since 1971 AKVAFORSK, has continuously carried out large scale breeding research projects with salmonid species, and during the latest 15 years also with a number of fresh water and marine species. Results from this work and the results from other institutions around the world have brought forward considerable knowledge, which make the development of efficient breeding programs feasible. The genetic improvement obtained in selection programs for fish and shellfish is remarkable and much higher than what has been achieved in terrestrial farm animals.
Download or read book Selective Breeding in Aquaculture an Introduction written by Trygve Gjedrem and published by Springer Science & Business Media. This book was released on 2010-03-17 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The foundation of quantitative genetics theory was developed during the last century and facilitated many successful breeding programs for cultivated plants and t- restrial livestock. The results have been almost universally impressive, and today nearly all agricultural production utilises genetically improved seed and animals. The aquaculture industry can learn a great deal from these experiences, because the basic theory behind selective breeding is the same for all species. The ?rst published selection experiments in aquaculture started in 1920 s to improve disease resistance in ?sh, but it was not before the 1970 s that the ?rst family based breeding program was initiated for Atlantic salmon in Norway by AKVAFORSK. Unfortunately, the subsequent implementation of selective breeding on a wider scale in aquaculture has been slow, and despite the dramatic gains that have been demonstrated in a number of species, less than 10% of world aquaculture production is currently based on improved stocks. For the long-term sustainability of aquaculture production, there is an urgent need to develop and implement e- cient breeding programs for all species under commercial production. The ability for aquaculture to successfully meet the demands of an ever increasing human p- ulation, will rely on genetically improved stocks that utilise feed, water and land resources in an ef?cient way. Technological advances like genome sequences of aquaculture species, and advanced molecular methods means that there are new and exciting prospects for building on these well-established methods into the future.
Download or read book Circular Economy Strategies and the UN Sustainable Development Goals written by Michael Odei Erdiaw-Kwasie and published by Springer Nature. This book was released on 2023-09-22 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides novel perspectives to the ongoing global discussions on the UN Sustainable Development Goals (SDGs). Current knowledge on circular economy and the SDGs target in developing and emerging countries are mostly fragmented and empirical evidence is limited. The approach taken in the book is unique as it presents holistic viewpoints about the synergies, opportunities and challenges between circular economy and SDGs targets in developing and emerging countries. The book presents diverse contents on the topic including literature reviews, conceptual discussions, case studies, and empirical analysis.
Download or read book Papers Contributed to the Workshop on Strategies for the Management of Fisheries and Aquaculture in Mangrove Ecosystems Bangkok Thailand 23 25 June 1986 written by R. H. Mepham and published by Food & Agriculture Org.. This book was released on 1987 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: FIRI/R370 (Suppl.).
Download or read book Strategies and Options for Increasing and Sustaining Fisheries and Aquaculture Production to Benefit Poorer Households in Asia written by and published by WorldFish. This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Report written by and published by . This book was released on 1989 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Fisheries Strategy and Action Plan for the Implementation of the National Fisheries Strategy written by Bangladesh. Department of Fisheries and published by . This book was released on 2006 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Great Lakes an overall strategy and indicators for measuring progress are needed to better achieve restoration goals written by and published by DIANE Publishing. This book was released on with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the FAO International Symposium on the Role of Agricultural Biotechnologies in Sustainable Food Systems and Nutrition written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-01-31 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The FAO international symposium on “The role of agricultural biotechnologies in sustainable food systems and nutrition” took place from 15 to 17 February 2016 at FAO headquarters, Rome. Over 400 people attended, including 230 delegates from 75 member countries and the European Union, as well as representatives of intergovernmental organizations, private sector entities, civil society organizations, academia/research organizations and producer organizations/cooperatives. The symposium encompassed the crop, livestock, forestry and fishery sectors and was organized around three main themes: i) climate change; ii) sustainable food systems and nutrition; and iii) people, policies, institutions and communities. The proceedings provide the main highlights of the symposium which covered a broad range of biotechnologies, from low-tech approaches such as those involving use of microbial fermentation processes, biofertilizers, biopesticides and artificial insemination, to high-tech approaches suc h as those involving advanced DNA-based methodologies and genetically modified organisms. The full report has been divided into sections and individual chapters for ease of downloading: Introduction to the Proceedings Chapter 1. Opening plenary session Chapter 2. High-level ministerial session Chapter 3. Parallel sessions: Climate change Chapter 4. Parallel sessions: Sustainable food systems and nutrition Chapter 5. Parallel sessions: People, policies, institutions and communities Chapter 6. Student interactive session: Bringing fresh perspectives Chapter 7. Side events: Reports Chapter 8. Final plenary session For more information, visit the webpage http://www.fao.org/about/meetings/agribiotechs-symposium/en/.
Download or read book U S Prairie Pothole Joint Venture Implementation Plan written by U.S. Fish and Wildlife Service and published by . This book was released on 1989 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strategies for Bird Conservation written by and published by . This book was released on 2000 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents a compilation of papers presented at the 3rd International Partners in Flight Workshop held October 1-5, 1995, at the Grand Hotel in Cape May, NJ. The title of the workshop was 'Partners in Flight Conservation Plan: Building Consensus for Action.' Manuscripts have been available on-line at the Cornell Laboratory of Ornithology web site (http://birds.cornell.edu/pifcapemay) since the year 1999, and the majority of them have been updated recently to reflect knowledge available by the 2000 publication date. The volume is divided into seven sections that range from general planning considerations to a case study in bird conservation planning. References from all papers are compiled in a single 'References' section at the end of the volume.
Download or read book Upstream written by Committee on Protection and Management of Pacific Northwest Anadromous Salmonids and published by National Academies Press. This book was released on 1996-07-31 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of salmon to the Pacific Northwest--economic, recreational, symbolic--is enormous. Generations ago, salmon were abundant from central California through Idaho, Oregon, and Washington to British Columbia and Alaska. Now they have disappeared from about 40 percent of their historical range. The decline in salmon numbers has been lamented for at least 100 years, but the issue has become more widespread and acute recently. The Endangered Species Act has been invoked, federal laws have been passed, and lawsuits have been filed. More than $1 billion has been spent to improve salmon runs--and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problem--starting with available data on the status of salmon populations and an illustrative case study from Washington state's Willapa Bay. The book offers specific recommendations for salmon rehabilitation that take into account the key role played by genetic variability in salmon survival and the urgent need for habitat protection and management of fishing. The committee presents a comprehensive discussion of the salmon problem, with a wealth of informative graphs and charts and the right amount of historical perspective to clarify today's issues, including Salmon biology and geography--their life's journey from fresh waters to the sea and back again to spawn, and their interaction with ecosystems along the way. The impacts of human activities--grazing, damming, timber, agriculture, and population and economic growth. Included is a case study of Washington state's Elwha River dam removal project. Values, attitudes, and the conflicting desires for short-term economic gain and long-term environmental health. The committee traces the roots of the salmon problem to the extractive philosophy characterizing management of land and water in the West. The impact of hatcheries, which were introduced to build fish stocks but which have actually harmed the genetic variability that wild stocks need to survive. This book offers something for everyone with an interest in the salmon issue--policymakers and regulators in the United States and Canada; environmental scientists; environmental advocates; natural resource managers; commercial, tribal, and recreational fishers; and concerned residents of the Pacific Northwest.
Download or read book Proceedings RMRS written by and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Upper Mississippi River National Wildlife and Fish Refuge Comprehensive Conservation Plan Alternative E Modified Wildlife and Integrated Public Use written by and published by . This book was released on 2006 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish and Wildlife News written by and published by . This book was released on 1988 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rebuilding of marine fisheries Part 2 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-10-09 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides 13 case studies of fisheries rebuilding initiatives, including measures to regulate exploitation patterns for cod and herring in the Northeast Atlantic, and a performance assessment for Eastern Atlantic and Mediterranean Bluefin tuna.
