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kfas, vol. 58, no. 5, pp.612-618, November, 2025 DOI. https://doi.org/10.5657/KFAS.2025.0612

Feeding Habits of John Dory Zeus faber in the South Sea of Korea

손준영·강민서·김동진·김민서·유예빈·조재익·최영현·김현지¹·이정훈¹·백근욱^*
경상국립대학교 해양과학대학 해양생명과학과/해양생물교육연구센터/해양산업연구소, ¹국립수산과학원 수산자원연구센터

ABSTRACT

In this study, we analyzed the stomach contents of 303 john dory Zeus faber specimens collected from the South Sea of Korea in 2024. The specimens ranged in total length from 16.0 to 44.2 cm. The stomach contents of 151 specimens containing prey items indicated that fishes (Pisces) were the dominant prey group, representing 99.6% of the index of relative importance (%IRI). Engraulis japonicus was identified as the primary prey species. Other prey items, including Caridea, Cephalopoda, and Isopoda, were present but contributed less than 0.4% each to the %IRI. The trophic level of John Dory in the South Sea was 4.5. Analysis of dietary changes with growth indicated that fish remained the dominant prey across all size classes, with over 98.0 %IRI. The mean weight of prey per stomach increased significantly with body size (P<0.05).
Keyword

South Sea, Diet composition, Feeding habits, Zeus faber