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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”. -
Book (stand-alone)Small-scale Oyster Culture on the West Coast of Peninsular Malaysia - BOBP/REP/63 1993
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No results found.This paper describes small-scale oyster culture trials carried out in the states of Kedah and Perak on the west coast of Peninsular Malaysia. Rafts and longlines were found to be economically viable and the technology was transferred to fishermen. Spat of the slipper oyster, Crassostrea iredalei, were transplanted from the east coast of peninsular Malaysia to the west coast sites. Small-scale depuration units were established at farm sites and a series of market promotions successfully un dertaken. Hatchery seed production and remote setting were done by biologists and staff of the Fisheries Research Institute with assistance from temporarily hired field biologists. Artificial spat production was necessary to supplement short supplies of wild spat. Acknowledgement is due to the Director General of Fisheries, Malaysia, Dato Shahrom bin Haji Abdul Majid, for his kind support and permission to publish this paper. Thanks are also due to the Director of Research, Mr. Ong K ah Sin, for his guidance and encouragement, and to Messrs. Ng Fong Oon and Kamal Zaman for their contributions. The trials were undertaken from 1988 till mid-1993 as a BOBP subproject under the regional project “Small- scale Fisherfolk Communities in the Bay of Bengal” (GCP/RAS/ll8/MUL) funded by DANIDA (Danish International Development Assistance) and SIDA (Swedish International Development Authority).
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