• Title/Summary/Keyword: 굴 양식

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Development of Bivalve Culture Management System based on GIS for Oyster Aquaculture in GeojeHansan Bay (거제한산만 굴 양식장에 대한 GIS 기반 어장관리시스템 개발)

  • Cho, Yoon-Sik;Hong, Sok-Jin;Kim, Hyung-Chul;Choi, Woo-Jeung;Lee, Won-Chan;Lee, Suk-Mo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.16 no.1
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    • pp.11-20
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    • 2010
  • Oyster production is playing an important role in domestic aquaculture, but facing some problems such as exports decrease, a slowdown in domestic demand and marine environmental deterioration. In order to obtain the suitable and sustainable oyster production, suitable sites selection is an important step in oyster aquaculture. This study was conducted to identify the suitable sites for lunging culture of oyster using Geographic Information System(GIS)-based multi-criteria evaluation methods. Most of the parameters were extracted by Inverse Distance Weighted(IDW) methods in GIS and eight parameters were grouped into two basic sub-models for oyster aquaculture, namely oyster growth sub-model(Sea Temperature, Salinity, Hydrodynamics, Chlorophyll-a) and environment sub-model(Bottom DO, TOC, Sediment AVS, Benthic Diversity). Suitability scores were ranked on a scale from 1(leased suitable) and 8(most suitable), and about 80.1% of the total potential area had the highest scores 5 and 6. These areas were shown to have the optimum condition for oyster culture in GeojeHansan Bay. This method to identify suitable sites for oyster culture may be used to develop bivalve culture management system for supporting a decision making.

자란만의 수질 및 저질 특성과 빈산소수괴 형성

  • 정우건;최종덕;조창환;김용술;조상만
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.535-536
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    • 2000
  • 경남 고성군 하일면과 삼산면에 위치하는 자란만은 약 356ha의 굴수하식 양식장이 있어 오래 전부터 굴 생산지로 유명하다. 그러나 최근 들어 연안환경 악화로 인하여 생산성이고 있고, 특히 여름철에는 많은 양식굴이 폐사되고 있다. 굴의 생산은 성장과 생존율에 의해 좌우되는데, 성장에 영향을 주는 가장 중요한 요인은 수온이지만(Prytherch, 1928),여러가지 환경요인이 복합적으로 작용한 결과이다(Gun 1961; wells 1961; butler, 1949; Alderdice, 1972; Vernberg and Vernberg, 1972).(중략)

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BIOLOGICAL STUDIES ON OYSTER CULTURE(II) Morphological Charaeteristics of the Oyster, Crassostrea gigas (굴의 양식에 관한 생물학적 연구(II) 참굴의 산지별 특성)

  • YOO Sung Kyoo;YOO Myung Suk
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.6 no.1_2
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    • pp.65-75
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    • 1973
  • Morphological variations of the Korean Oyster, Crassostrea gigas, were studied on the basis of the oyster samples collected from seven ecologically different areas in May and October of 1972 respectively. The sampling areas were Daecheon and Buan in the west coast, Namseong, Cha-myeon, Imyeong and Chubong in the south coast and Pohang in the east coast. The average sizes of the oysters of the west coast were smaller than those of the south coast as well as those of the east coast. The oysters of the east were largest in size, The oysters from subtidal habitats (Chubong and Pohang) had elongated shells and those from intertidal habitats (Buan, Namseong, Imyeong and Chamyeon) had slanted shells. The samples from subtidal habitats showed size variations depending on cultural methods applied. The oysters from Chubong reared by hanging method had their shells as compared to those from Pohang reared by bottom culture method. The ratio of shell height to shell length showed a great variation froms areas to areas with a significant differences. The fatness (meat weight / shell weight) of all the samples collected in October revealed higher value than those collected in May. The oysters from Chubong showed maximum fatness, and those of Pohang showed minimum fatness. Seasonal variations in fatness was not significant in Chubong. On the other hand, it was relatively significant in the oysters from Pohang, Chamyeon, Imyeong and Buan. Water content of the oyster meat was greater in October than in May. It also showed variations in the sampling areas with higher values in the oyster from Imyeong and Chamyeon than those from Chubong, Pohang and Daecheon.

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Consolidation Characteristics of Mixed Soil (혼합토의 압밀 특성)

  • Yoon, Hyun-Suk;Lee, Ki-Ho;Park, Jun-Boum
    • Proceedings of the Korean Geotechical Society Conference
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    • 2003.03a
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    • pp.211-216
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    • 2003
  • 굴폐각은 굴양식 후 남는 것으로 남해안에서 주로 집중적으로 발생하는데 연간 28만톤의 발생량 중 상당양은 폐기물로 계속 누적되고 혹은 불법매립되어 환경오염 문제까지 발생시키고 있다. 본 연구에서는 산업폐기물로 분류되는 굴패각을 지반공학 분야에서 활용하기 위한 대안으로 해성점토와 혼합하여 매립재료로써의 적용성을 평가하기 위하여 대형 압밀기를 이용하여 실험을 실시하고 이를 토대로 기초자료를 획득하고자 하였다. 원형의 굴패각을 파쇄하여 입도별로 분류하고 이중 사질토 입경 크기의 재료에 대한 기본 물성치를 평가하고 지반 재료로써의 적용성를 분석하였다. 해성점토 내의 굴패각입자의 혼합비를 변화시켜 만들어진 혼합토에 대한 압밀 실험 결과 굴패각의 혼합율이 증가할수록 체적변화율이 작게 되고, 침하 속도는 빠르게 증가함을 알 수 있었다. 이는 압밀응력의 일부를 굴패각 입자의 골격구조가 부담함으로써 실제 점토부분에 작용하는 압밀응력은 굴패각 혼합율이 증가할수록 작아지는 것으로 판단된다.

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한국산 굴에서 분리한 새로운 환상 peptide, Gamakamide-E 의 구조와 합성

  • ;Y. Horigome;M. Satake;Y. Oshima;T. Yasumoto
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2002.10a
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    • pp.82-83
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    • 2002
  • 1999년 전남 여수지역의 가막만에서 양식한 굴을 원료로 가공한 통조림과 냉동품은 강한 쓴맛을 나타내었으며, Lee(1995)는 이들 굴로부터 쓴맛 성분을 분리 정제하여 5개의 peptide를 분리하여 보고하였다. 이들 성분은 쓴맛 이외에는 별다른 활성이 없었고, 그 후에도 이러한 사례는 보고되지 않아 대수롭지 않게 생각하였으나, 이중양적으로 많았던 1개의 성분에 대하여 발견된 지역인 가막만의 명칭에 유래하여 Gamakamide-E로 명명하고 NMR 및 합성에 의하여 구조를 해명하였기에 보고한다. (중략)

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양식 굴을 이용한 편의가공식품 개발

  • 김영명
    • Proceedings of the Korean Journal of Food and Nutrition Conference
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    • 2004.07a
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    • pp.13-28
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    • 2004
  • 굴은 단백질, 아미노산, 타우린과, 베테인, 글리코겐, 칼슘, 아연 등 다양한 종류의 영양성분과 생리활성성분을 풍부하게 함유하고 있을 뿐만 아니라 풍미 기호특성이 우수하여 국제적으로도 오래전부터 "바다의 우유"라는 별칭으로 불릴 만큼 기호성 높은 영양식품으로 인정되는 수산물이다. 우리나라를 비롯한 일본의 경우 굴은 주로 생식용, 젓갈류나 조리용 소재로 소비되나, 서구 유럽에서는 통조림, 스튜, 피자, 소스 생식용 등 다양한 형태로 소비 이용되고 있다. (중략)

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DEPURATION OF LIVE OYSTERS BY CONTROLLING TEMPERATURE, pH AND FREE CHLORINE CONTENT (온도, pH 및 유리염소량의 조절에 의한 오염된 굴의 정화)

  • CHOI Jin-Ho;KIM Chang-Yang
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.12 no.4
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    • pp.255-259
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    • 1979
  • Depuration of extraneous substances such as bottom deposit, feces and coliforms from live oyster has been studied. Coliform accumulation of bottom cultured oysters was much higher than that of raft or long line cultured oysters. When the depuration tank designed in this study was adopted, the depuration rate could be diminished to about $50\%$ within one hour treatment. Tho most effective conditions of the tank water for depurating live oysters wer $22^{\circ}C$ in temperature, 8.80 in pH and below about 2 ppm of residual chlorine concentration.

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Effect of Environment Factors on Growth and Mortality of Cupped Oyster, Crassostrea gigas (양식장 환경이 갯벌양식 굴 (Crassostrea gigas)의 성장과 폐사에 미치는 영향)

  • Park, Sang-Woo;Kim, Yong;Kim, Ji-Hye;Chung, Su-Whan;Han, Kyung-Nam
    • The Korean Journal of Malacology
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    • v.29 no.4
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    • pp.273-281
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    • 2013
  • In order to evaluate how the effects of aquacultural environment, such as temperature, salinity, DO, SS, Chlorophyll-a, COD and nutritive salts on Cupped oysters, an investigational study was conducted between September to December of 2011. During the study, different intermediate cage farms on the surface of the sea were used to culture and compare the growth and survival rate of the Cupped oysters in different fishing environments. The different intermediate cage farms used were Wonsando-ri, Chang-ri, and Pado-ri. In January of 2012, these oysters were transplanted to a horizontal net farm in a mudflat until July of that year. The adaptation rates of the Cupped oysters were tested at differential exposure times at varying intertidal periods. Wonsando-ri showed the highest water temperature and Chlorophyll-a levels, while the salinity was found to be within range of stable conditions among all three intermediate cage farms. Once the Cupped oysters were at the horizontal net farm, the growth was measured at distinct tidal exposure time of 1, 3, and 5 hours, whereby the growth rate was highest at 3, 1, and 5 hours, respectively. In addition, the oysters cultivated in intermediate cage farms had longer shell lengths compared to shell heights, while oysters cultured in the horizontal net farm had larger shell heights than shell lengths.