Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Diet composition and feeding habits of black rockfish Sebastes inermis caught in the coastal waters of Yeosu, Korea

  • Hui Tack Song (Jeollanamdo Ocean and Fisheries Science Institute) ;
  • Heeyong Kim (Distant Water Fisheries Resources Division, National Institute of Fisheries Science) ;
  • Jeong-Ho Park (Distant Water Fisheries Resources Division, National Institute of Fisheries Science) ;
  • Jin Ho Jung (South Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Mi Song (South Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Kyeong-Ho Han (Department of Aquatic Science, Chonnam National University) ;
  • Seong Yong Moon (South Sea Fisheries Research Institute, National Institute of Fisheries Science)
  • Received : 2024.04.26
  • Accepted : 2024.07.10
  • Published : 2024.10.31
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Abstract

This study thoroughly investigated the diet composition and feeding habits of black rockfish, Sebastes inermis along the Yeosu Coast, South Korea. The stomach content of S. inermis was dominated by shrimp (Acetes japonicus and Crangon hakodatei) and brachyura (Charybdis bimaculata and Charybdis japonica). Shrimp was the dominant prey throughout the seasons, with an increase in fish consumption observed during autumn. Predator size and sampling period influenced the average degree of stomach fullness in black rockfish; however, the significance of fish as prey increased with increasing size. Dietary overlap analysis demonstrated a high overlap among smaller size classes and a low overlap between smaller and larger size classes. The results of this study indicate that black rockfish are specialist predators of shrimp.

Keywords

Acknowledgement

We express our gratitude to the researchers at the Fisheries Resources Laboratory for collecting the stomach content samples from Sebastes inermis.

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