Diet composition and trophic level of jack mackerel, <i>Trachurus japonicus</i> in the South Sea of Korea

Feeding Habits of Jack Mackerel, Trachurus japonicus, in the Coastal Waters of South Sea, Korea

“…Lee, Lee, and Kim (2021) reported that 6.0-28.0 cm total length T. japonicus mainly ate copepods and Euphausiacea, which differed from our results. By constant, Kim et al (2021) found that 7.0-49.8 cm total length T. japonicus ate fish and Euphausiacea, to our results. This difference might arise if there are differences in the prey species available in the study site environments and if T. japonicus chooses larger prey as it grows (Lee, Lee, and Kim, 2021).…”

“…japonicus feeding habits have been studied along the northern and western coasts of Kyushu, Japan (Tanaka, Aoki, and Ohshimo, 2006) and the East China Sea (Jiang et al, 2013;Sassa, Tsukamoto, and Konishi, 2008). Studies in Korea have been conducted in the Nakdong River estuary (Huh and Cha, 1998) and South Sea (Kim et al, 2021;Lee, Lee, and Kim, 2021). These studies found that T. japonicus is a carnivore and opportunistic feeder, selecting abundant prey items according to the environment, with the main prey differing according to spatiotemporal factors and the ability to adapt to environmental changes (Pihl, 1985), Therefore, continuous research is required to identify feeding habits and analyze changes in environmental prey items.…”