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ISSN : 1225-3480

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28권 4호

미세조류 3종의 먹이에 따른 피조개 Scapharca broughtonii 유생과 부착치패의 성장과 생존

Effect of Three Microalgal Species on Growth and Survival of Larvae and Spat of Ark Shell Scapharca broughtonii

민병희 (부산광역시 수산자원연구소)
김병학 (국립수산과학원 남서해수산연구소)
권오남 (강릉원주대학교 해양생명공학부)
박흠기 (강릉원주대학교 해양생명공학부)
허성범 (부경대학교 해양바이오신소재학과)
한국패류학회지 / The Korean Journal of Malacology, (P)1225-3480;
2012, v.28 no.4, pp.293-303
https://doi.org/10.9710/kjm.2012.28.4.293
민병희, 김병학, 권오남, 박흠기, & 허성범. (2012). 미세조류 3종의 먹이에 따른 피조개 Scapharca broughtonii 유생과 부착치패의 성장과 생존. , 28(4), 293-303, https://doi.org/10.9710/kjm.2012.28.4.293

초록

I. galbana, P. lutheri 및 C. simplex 3종을 먹이로 공급하며, 미세조류 종류에 따른 피조개 유생과 부착치패의 성장과 생존율 등을 비교하였다. 서로 다른 미세조류 3종을 단일 또는 혼합하여 먹이로 공급한 피조개 유생의 성장은 혼합 공급구에서 가장 빠르게 나타내었고, 단일 공급구 중에서 C. simplex 공급구에서 가장 높은 성장을 보였다. 또 유생의 생존율은 혼합 공급구에서 $27.4{\pm}5.3%$로 가장 높게 나타내었고, 단일 공급구 중에서 C. simplex 공급구에서 $14.5{\pm}2.3%$로 가장 높았다. I. galbana, P. lutheri, C. simplex 3종을 단일 또는 동일비율로 혼합한 미세조류의 지방산 조성은 EPA의 경우 C. simplex에서만 $25.9{\pm}0.64%$로 나타났고, 다불포화지방산(PUFA)과 n-3 HUFA 함량은 C. simplex에서 가장 높게 나타났다. 또 이들 미세조류를 먹이로 공급한 피조개 부착치패의 경우 C. simplex 공급구에서 포화지방산과 AA 함량이 유의하게 높았다. 이와 같은 C. simplex의 지방산 조성이 피조개 유생과 부착치패의 성장과 생존율의 원인으로 판단된다. 따라서 단일종으로는 C. simplex가 가장 적합하나 3종을 혼합하여 공급하는 것이 더 좋은 먹이효율을 유도할 수 있다.

keywords
Ark Shell, Scapharca broughtonii, Larvae and Spat, Microalgal Diets, Growth and Survival

Abstract

Growth and survival (%) of the larvae and spats of Scapharca broughtonii fed on three different microalgal species (Isochrysis galbana, Pavlova lutheri and Chaetoceros simplex) were investigated with the analysis of fatty acid composition. The larvae fed on mixed diet with three microalgal species showed the highest growth in shell length ($261.3{\pm}13.5{\mu}m$) and survival ($27.4{\pm}5.3%$). The growth and survival (%) of the larvae fed on the single diet with C. simplex were significantly higher than those of the larvae fed on I. galbana or P. lutheri (P < 0.05). The growth and survival (%) of S. broughtonii spats reared for 30 days were also highest in the mixed diet group with $1,114.8{\pm}128.0{\mu}m$ and $61.3{\pm}5.5%$, respectively, and followed by C. simplex, I. galbana and P. lutheri. With respect to composition of fatty acid of the single or mixed microalgal diet, the content of PUFA and n-3 HUFA were the highest in C. simplex. This result can be considered as the reason for high growth and survival (%) of the larvae and the spats. C. simplex was the best species as the single diet, but the mixed diet with three microalgal species showed better dietary value than single diet did for the larvae and spat of S. broughtonii.

keywords
Ark Shell, Scapharca broughtonii, Larvae and Spat, Microalgal Diets, Growth and Survival

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