Growth of Larval Rockfish Sebastes schlegeli Fed Moina macrocopa

Abstract

Several our studies have focused recently on the mass production of the freshwater Cladoceran Moina macrocopa which can substitute Artemia nauplii for the culture of larval marin fish. A 6 weeks experiment was conducted to investigate the effects of enrichment on the fatty acid composition of Moina macrocopa through feeding Schizochytrium sp. containing highly unsaturated fatty acids and to study the impacts of n-3-HUFA enriched Moina on improving survival rate and fatty acid compostion of larval rockfish Sebastes schlegeli. After feeding for 6 weeks, the Moina-fed fry resulted in a higher survival rate of 99.2% compared to the Artemia-fed fry 12.8%. In addition, the Moina-fed fry had the fast growth rate 45.6mm compare to the Artemia-fed fry 25.7 mm at the end of the experiment. The Moina-fed fry showed significantly higher level of 16.47% DHA than their Artemia-fed fry counterparts of the level of 3.97% with respect to DHA. PL, the cell membrane components in living food organisms, constituted 63.8% of the Moina, which was significantly higher than in the 40.1% of the Artemia. The present study indicate that Moina macrocopa can be used as Artemia substitute and improving the survival rate rockfish larvae through enchriment Schizochytrium sp.

Growth of Larval Tiger Puffer Takifugu rubripes Fed Diaphanosoma celebensis

“…--- (Hirayama, 1985;Yamasaki et al, 1987;Yoshimura et al, 1996). (Kim et al, 1999), (Jeong et al, 2016). EPA (Eicosapentaenoic acid), DHA (Docosahexaenoic acid)…”

“…기수산 물벼룩(Diaphanosoma celebensis) 효과 (Jeong et al 2016). , Copepoda (Schipp et al, 1999;Evjemo et al, 2003), Amphipoda (Sudo and Azeta, 1996;Aravind et al, 2007) Cladocera (Segawa and Yang 1988;Adeyemo et al 1994;He et al, 2001) .…”