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NTIS 바로가기한국패류학회지 = The Korean journal of malacology, v.32 no.3, 2016년, pp.165 - 174
Feeding behaviour of the manila clam Ruditapes philippinarum was qualitatively and quantitatively characterized by comparing the contents composition in digestive tract of the clam and the phytoplankton community in surface sea water in Gomso Bay, west coast of Korea. The contents of digestive tract...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
바지락의 특징은? | 바지락 (Ruditapes philippinarum)은 조간대에서부터 수심 10 m 이내의 사니질에 잠입하여 서식하는 종으로, 우리나라의 경우 조간대 서식 패류 중 가장 많은 생산량을 기록하는 매우 중요한 수산자원이다. 바지락과 같은 잠입성 이매패류는 수관 (siphon) 을 퇴적물 밖으로 내어 수중의 식물플랑크톤 이 외에도 박테리아 등의 다양한 유기쇄설물을 먹이로 섭취하면서 생활한다 (Langdon and Newell, 1990). | |
바지락의 소화관에서 관찰되는 것은? | 바지락의 섭식 특성을 분석하기 위해 서해의 곰소만에서 바지락의 소화관 내용물과 표층 해수의 식물플랑크톤 군집에 대해 정량 및 정성분석을 실시하였다. 바지락의 소화관에는 규조류 (71.5%), 와편모류 (13.1%), 미소플랑크톤 (6.6%)과 중형 동물플랑크톤을 포함한 유기쇄설물 등이 관찰되었다. 소화관 내에서 섭식량은 겨울과 봄에 많았고 여름과 가을에 낮게 나타난 반면, 표층 해수의 식물플랑크톤 현존량은 가을에 가장 많았다. | |
바지락과 같은 이미패류의 섭식 특징은? | 이들 이매패류의 성장은 수온과 염분 등의 이화학적 요인 이외에도 먹이생물로서 수중에 존재하는 식물플랑크톤의 시공간적 변동에 따라 좌우된다. 특히 조간대에서 잠입․서식하는 여과섭식성 이매패류는 수관 길이에 따라 주변 해수에 존재하는 각종 유기물질을 섭취하는데, 밀물시 재부유된 저서성 식물플랑크톤과 수중에 존재하는 부유성 식물플랑크톤을 섭취하게 된다. 이들 이매패류는 섭취된 식물플랑크톤을 아가미에서 크기에 따라 걸러낸 후 선택적으로 섭식하는 것으로 알려져 있다 (Shumway et al., 1985; Arakawa et al. |
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