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http://dx.doi.org/10.35399/ISK.32.2.10

Diet Composition of Whitespotted Conger, Conger myriaster in the Coastal Waters of Geoje Island, Korea  

Kim, Kyung Ryul (Department of Seafood & Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University)
Nam, Ki Mun (Pukyong Marine Life Research Institute)
Park, Kyeong Hyeon (Korea Fisheries Resources Agency)
Kim, Byong Seob (Korea Fisheries Resources Agency)
Han, Myung Il (Korea Fisheries Resources Agency)
Kwak, Ju Won (Korea Fisheries Resources Agency)
Baeck, Gun Wook (Department of Seafood & Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University)
Publication Information
Korean Journal of Ichthyology / v.32, no.2, 2020 , pp. 103-109 More about this Journal
Abstract
The diet composition of whitespotted conger, Conger myriaster was studied using 129 specimens collected in the coastal waters Geoje, Korea from June 2018 to May 2019. The size of the specimens ranged from 11.5~22.9 cm in preanus length (AL). C. myriaster was a piscivore that consumes mainly pisces such as Engraulis japonicus and Gobiidae (%IRI: 98.4%). Of the fish species E. japonicus was the most preferred prey. Based on these results, it is considered that Conger myriaster has a characteristic of feeding on abundant prey organisms in the study area. The dietary compositions of C. myriaster was not significantly different among size classes. These results are considered to be due to a lack of specimens and the various size groups were not collected. Based on these results, it is thought that immature fishes inhabit the coast of Geoje. As body size of C. myriaster increased the mean weigh of prey per stomach (mW/ST) tended to increase (one-way ANOVA, P<0.05).
Keywords
Conger myriaster; whitespotted conger; diet composition; Geoje; feeding habits;
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