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BookletProactive approach proved key to survival for the Australian Pacific oyster industry
Genetics in aquaculture: a case studies
2023Also available in:
No results found.The global Pacific oyster aquaculture sector is plagued by a disease caused by the Ostreid herpesvirus, known in some countries as Pacific oyster mortality syndrome (POMS). POMS first arrived in Australasia in 2010 and caused massive mortalities, especially of young oysters, sometimes bringing about close to 100 percent mortality. At that time the Pacific oyster industries in Australia and New Zealand had already initiated genetic breeding programmes for commercially important growth-related traits. As POMS arrived in the region and started to spread throughout the two countries, these breeding programmes were able to pivot to breeding for POMS resistance, which turned out to be a highly heritable trait and responded very well to selection such that by 2018, selected oysters had average survival rates of around 80 percent during POMS outbreaks. This case study traces the development of oyster breeding programmes in Australia and New Zealand and describes how the industry sectors were able to respond quickly to the new and immediate threat of POMS and how the existence of ongoing breeding programmes, supported by both public and private sector, was critical to saving the industry from being completely decimated by POMS and how the breeding programmes enabled relatively rapid recovery from POMS-related losses. The study identifies the critical role of public–private partnership in the success of the breeding programmes and identifies some of the funding mechanisms that ensured ongoing success of these programmes. -
No Thumbnail AvailableProjectCulture of the Pacific oyster (Crassostrea gigas) in the Republic of Korea
Regional Seafarming Development and Demonstration Project
1989Also available in:
No results found.Oyster is consumed worldwide. It is a delightful and nutritious food taken in a variety of forms: fresh, frozen, canned and dried as well as juice. By popularizing the hanging culture method since the early 1960s, the culture practices appropriate to a region have been gradually evolved and established. At present, most of the oyster production comes from long-line culture. In Korea, the Pacific Oyster (C. gigas Korean kang-gul (C. rivularis), Korean pawit-gul (C. nippona), spiny oyster (C. ec hinata) and the densely lamellated oyster (C. denselamellosa) are grown. Among these, the Pacific oyster is the main species for commercial farming. In 1986, the Korean oyster culture industry showed there were 10,736 hectares of licensed growing water and a production of 255,000 metric tons shell-on, or a per-hectare yield of about 23.75 metric tons. Oyster production was 25 to 30 percent of total mariculture output in the 1980s, compared to 50 to 60 percent in the 1960s. Most of the processe d Oysters and some of the fresh produce are exported to North America, Japan, Southeast Asia, Middle East and other countries. The purpose of this Manual is to extend the technology of oyster culture to farmers and extension workers. It covers the biology, theory and practice of oyster culture, and the findings from applied research and field studies. It also includes processing. -
Book (series)Pacific oyster farming
A practical manual
2024Also available in:
No results found.The purpose of this manual is to give the reader a foundation of practical knowledge regarding all aspects of Pacific oyster cultivation. It is targeted at new entrants to the market wishing to establish a farm, and existing operators who wish to develop their farms and explore new cultivation techniques. The methodologies described can be applied both to low-tech, low budget, small-scale farming operations and to high-tech, big budget, industrial-scale aquaculture production enterprises. This guide focuses on the functional expertise and technical equipment required to construct and manage an operational farm in the diverse environmental and physical locations in which they can be situated, from the initial stages of finding and selecting a suitable site, to the conclusion of the first production cycle and harvesting the crop. The manual contains a brief introduction which describes the relevance of the species with regards to global aquaculture production figures and how it can form an important part of future food production strategies. Chapter 2 describes the anatomy and biology of Crassostrea gigas and gives an indication as to the environmental conditions in which the species thrives as well as the pathologies and predators that can result in poor health leading to potential mortalities. Chapter 3 deals with all aspects of undertaking a survey of potential oyster farming sites and what data should be collected and examined to assess a site’s suitability, but also which areas are best suited to different cultivation techniques. After this, Chapter 4 introduces the main farming techniques that will be described in detail in the following chapters, which includes off-bottom cultivation, on-bottom cultivation, and suspended cultivation, and gives details of some of the most common cultivation equipment necessary to undertake these operations. The techniques and strategies necessary to procure seed oysters and how to develop them through the nursery stage are also introduced. This includes the basic principles of upwelling, which then leads into Chapter 5, which provides a detailed description of how to build and operate one particular example of a Floating Upwelling System (Flupsy) which is suitable for use in remote but sheltered conditions. Chapters 6, 7 and 8 constitute the main body of the manual and provide an in-depth look into the three major cultivation techniques that this guide concentrates on: “Farming with trestles and bags in the intertidal zone”, “On-bottom cultivation in the intertidal or subtidal zone” and “Offshore longline cultivation”.
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