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http://dx.doi.org/10.35399/ISK.31.2.2

Feeding Habits of Pacific cod (Gadus macrocephalus) in the West Coast of Yellow Sea of Korea  

Choi, Dong-Hyek (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Sohn, Myoung-Ho (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Kim, Maeng Jin (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Lee, Seung-Jong (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Publication Information
Korean Journal of Ichthyology / v.31, no.2, 2019 , pp. 77-82 More about this Journal
Abstract
The feeding habits of pacific cod (Gadus macrocephalus) were studied by analyses of stomach contents. Specimens of G. macrocephalus (n=407) were collected from the western coastal waters of Korea, monthly from July 2017 to June 2018. The size of G. macrocephalus ranged from 30.4 to 86.0 cm in total length (TL). G. macrocephalus was consumed mainly Pisces (71.5%) and Caridea (24.2%) based on % IRI, whereas other prey items including, Paguroidea, Euphausiacea and Cephalopods showed a low contribution to the diet. The feeding ratio of Caridea decreased with increasing fish size. While this decrease paralleled the increased consumption of fish preys. The feeding ratios of Pisces were the highest during spring, autumn and winter, whereas the proportion of Caridea was higher in summer.
Keywords
Pacific cod; Gadus macrocephalus; western sea of Korea; feeding habits;
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