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Feeding Habits of Juvenile of Gymnogobius heptacanthus in the Coastal Waters of Geoje, Korea  

Kim, Hyeon Ji (Department of Seafood & Aquaculture Science/Instiute of Marine Industry/Marine Bio-Education & Research Center, Gyeongsang National University)
Jeong, Jae Mook (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science)
Ye, Sang Jin (Resources Enhancement Division, Korea Fisheries Resources Agency)
Baeck, Gun Wook (Department of Seafood & Aquaculture Science/Instiute of Marine Industry/Marine Bio-Education & Research Center, Gyeongsang National University)
Huh, Sung-Hoi (Department of Oceanography, Pukyong National University)
Publication Information
Korean Journal of Ichthyology / v.28, no.1, 2016 , pp. 41-46 More about this Journal
Abstract
The feeding habits of juvenile (14.0~29.0 mm SL) of Gymnogobius heptacanthus were examined based on 229 individuals, that collected from June to August 2011 in the coastal water of Geoje, Korea. G. heptacanthus fed mainly on copepods which constituted 96.74% in IRI. Barnacle larvae were the second largest dietary component. Its diet also included small quantities of tintinnids, cladocerans and decapods. Graphical analysis of the diet composition showed that G. heptacanthus is a specialized predator characterized by strong individual feeding specialization. Especially copepods were heavily selected by of juvenile G. heptacanthus regardless of prey availability.
Keywords
Feeding habits; Gymnogobius heptacanthus; Geoje; Korea;
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