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NTIS 바로가기한국패류학회지 = The Korean journal of malacology, v.30 no.2, 2014년, pp.101 - 106
강종욱 (인하대학교 해양과학과) , 이선식 (인천광역시수산자원연구소) , 한경남 (인하대학교 해양과학과)
인공종묘로 생산된 동죽, Mactra veneriformis의 크기, 수온, 염분 변화에 대한 여수율과 먹이섭이량의 차이를 조사하였다. 수온의 경우 소형, 대형그룹의 여수율은
Clearance rate and feeding of surf clam, Mactra veneriformis were determined for 5 different water temperature regime (5, 10, 15, 20,
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핵심어 | 질문 | 논문에서 추출한 답변 |
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바지락의 자원 고갈 위험이 높아진 이유는? | 3-4년전만 해도 1 kg당 1,000-1,500원에 거래되었으나, 최근에는 바지락 생산 급감으로 동죽의 희소가치가 상승하여 2,500원 정도에 거래되고 있어 쉽사리 남획될 가능성이 많아 자원 고갈의 위험이 높다. 실제로 해양수산통계연보 (2013)에 따르면 동죽 어업생산량이 2003년에는 21,240 M/T였으나, 2012년에는 531 M/T로 계속 감소하다가 2013년에는 2,329 M/T로 약간 회복했으나 10년 전에 비해 1/10로 감소한 실정이므로 인공종묘생산 · 방류를 통한 자원회복이 시도되어야 한다. | |
동죽이란? | 동죽 (Mactra veneriformis) 은 이매패강 (Class Bivalvia) 백합목 (Order Veneroida) 개량조개과 (Family Mactridae) 에 속하는 종으로 우리나라 서해와 남해안의 모래 진흙이나 진흙 갯벌 조간대에 주로 분포하는 중형의 부유물 여과 섭식성 조개류로서 식용으로 선호되고 있다 (Hong, 2006). | |
바지락과 같은 조개류의 생산성에 영향을 주는 요인은? | 한편 조개류의 양식산업화를 위해서는 패류의 대사 생태에 대한 기초연구가 필요하다. 이 중 수온과 염분은 동죽과 같은 조개류의 성장, 성숙, 생존, 분포 및 먹이생물의 섭취, 생물의 에너지 활용 및 대사활동에 밀접한 관계를 가지고 있으며 조개류의 생산성에 많은 영향을 주는 것으로 알려져 있다 (Mills, 2000; Navarro et al., 2000). |
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해양수산통계연보. http://www.fips.go.kr.
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