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kfas, vol. 57, no. 6, pp.691-699, December, 2024 DOI. https://doi.org/10.5657/KFAS.2024.0691

Effects of Eicosapentaenoic Acid (EPA)-Enriched Artemia Nauplii on

Survival, Growth, Fatty Acid Composition, Antioxidant Status and

Growth-Related Hormone Levels of Walleye Pollock Gadus chalcogrammus

Larvae

이기욱†·이태훈1†·한경식·김소선·유해균·김희성1*
국립수산과학원 동해수산연구소, 1경상국립대학교 해양생명과학과

ABSTRACT

This study evaluated the effects of eicosapentaenoic acid (EPA)-enriched Artemia nauplii on the survival, growth, fatty acid composition, antioxidant capacity and growth-related hormone level of walleye pollock Gadus chalcogrammus larvae. Fifty days after hatching, pollock larvae (average total length: 17.8 mm) were fed Artemia enriched with four different levels of EPA, with total fatty acid content of 10.48% (D1), 12.28% (D2), 23.20% (D3), and 31.20% (D4), for 4 weeks. At the end of the feeding trial, survival of the fish in the D4 group was significantly higher (P<0.05) than that in the D1 group. However, EPA-enriched Artemia did not significantly affect larval survival. The activity of superoxide dismutase, growth hormone, and insulin-like growth factor-1 in the whole body was not significantly affected by EPA levels in Artemia. Our findings suggest that EPA-enriched Artemia with a total fatty acid content of 31.20% enhances the survival of walleye pollock larvae.
Keyword

Artemia, Eicosapentaenoic acid, Survival, Walleye pollock, Larvae