plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
A Comparison of Stomach Contents of the Fat Greenling Hexagrammos otakii in West Sea of Korea
신유리·류동기*
국립군산대학교 해양생명과학과
A comparison of the diet of the fat greenling Hexagrammos otakii was conducted in three regions of the West Sea- Incheon, Gunsan, and Heuksando-based on stomach content analysis. In total, 467, 432, and 451 individuals were collected from Incheon, Gunsan, and Heuksando regions, respectively. The proportion of fat greenlings with empty stomach was 41.1%, 46.1%, and 42.1% in Incheon, Gunsan, and Heuksando, respectively. The index of relative importance (IRI) showed regional variation in the dominant prey items: Brachyura were most dominant in Incheon and Heuksando, whereas Caridea were dominant in Gunsan. As the fish grew, the proportion of amphipods in the diet decreased, whereas the consumption of cephalopods and Pisces increased. In terms of seasonal feeding patterns, brachyurans and Caridea were dominant throughout the year; however, Pisces showed the highest proportion in all three regions during winter. Multivariate analysis confirmed significant differences in stomach content of fat greenlings among the three regions(P<0.05). These results indicate that H. otakii is an omnivorous species that primarily feeds on Brachyura and Caridea and consumes amphipods, pisces, and cephalopods.
Hexagrammos otakii, Stomach contents, West Sea of Korea