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http://dx.doi.org/10.5657/KFAS.2017.0541

Feeding Habits of Dolphinfish Coryphaena hippurus in the South Sea of Korea  

Jeong, Jae Mook (Fisheries Resources Research Center, National Institute of Fisheries Science)
Choi, Junghwa (Fisheries Resources Research Center, National Institute of Fisheries Science)
Im, Yang-Jae (Fisheries Resources Research Center, National Institute of Fisheries Science)
Kim, Jung Nyun (Fisheries Resources Research Center, National Institute of Fisheries Science)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.50, no.5, 2017 , pp. 541-546 More about this Journal
Abstract
Feeding habits of dolphinfish Coryphaena hippurus, were analyzed. Fish samples were collected by using a purse seine, fishing and set net in the southern sea of Korea from January to December 2015. The size of C. hippurus ranged from 23.8 to 127.4 cm in fork length. The species with the highest percent index of relative importance (%IRI; the most important prey taxa) in the diets of C. hippurus were teleosts and cephalopod, including Engraulis japonicus, Thamnaconus modestus and Trachurus japonicus, Loligo edulis was the most frequently consumed cephalopods. Coryphaena hippurus also ate small amounts of amphipods and carid shrimp. The dietary compositions of C. hippurus was not significantly different among size classes or seasons (ANOSIM, P>0.05). As body size of C. hippurus increased the mean number of prey per stomach (mN/ST) tended to decrease, but the opposite trend was evident for mean weight of prey per stomach (mW/ST). The mN/ST and mW/ST also significantly varied with season (one-way ANOVA, P<0.05).
Keywords
Dolphinfish; Coryphaena hippurus; South Sea; Feeding habits; Stomach contents;
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