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자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제18권 제1호
발행연도
2005.2
수록면
19 - 25 (7page)

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This study was performed to investigate the optimum density for the intensive mass production of cyclopoid copepod, Paracyclopina nana in terms of nauplii and adults production. Effect of three development stages on the fecundity of adult female for nauplii production, survival rate of P. nana nauplii with different initial nauplii culture densities for adults production and cannibalistic feeding behavior of P. nana was examined, respectively. The fecundity of adult female by different female, copepodite and nauplii density in 2 ml water volume decreased with the density of adult female, but was not affected by the density of either copepodite or nauplii. The average daily nauplii production for a adult female in 8 L water volume was 2.3×10^5 individuals with the incubation density of 7 adult females/ml, and this average value was significantly higher than those values of 0.6 to 1.7×10^5 individuals with the incubation density of 1, 3, 5, 10 adult females/ml (P<0.05). Survival rate of P. nana nauplii with different initial nauplii culture densities in 5 L vessels for 15 days were 32.7, 30.7, 28.9 and 23.0% with the culture density of 50, 100, 150 and 200 inds./ml, respectively, but these were significantly higher than those of values 19.7 and 18.4% with the culture density of 250 and 300 inds./ml (P<0.05). Cannibalistic behavior of P. nana adults on their offspring was observed, but the behavior decreased when phytoplankton was supplemented though there was no statistical difference (P>0.05). These results may indicate that P. nana is adaptable to the hatchery conditions and this species is cultured at the high densities. Optimum culture density for nauplii and adults production of P. nana were 7 adult females/ml and 200 nauplii/ml, respectively.

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UCI(KEPA) : I410-ECN-0101-2009-529-015356662