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가덕도 주변해역에 출현하는 홍어(Okamejei kenojei)의 식성Feeding habits of ocellate spot skate, Okamejei kenojei in the coastal waters of Gadoek-do, Korea
- Other Titles
- Feeding habits of ocellate spot skate, Okamejei kenojei in the coastal waters of Gadoek-do, Korea
- Issue Date
- 2015
- Publisher
- 한국수산해양기술학회
- Keywords
- Okamejei kenojei; Feeding habits; Gadoek-do; Ontogenetic change
- Citation
- 수산해양기술연구, v.51, no.2, pp 265 - 271
- Pages
- 7
- Indexed
- KCI
- Journal Title
- 수산해양기술연구
- Volume
- 51
- Number
- 2
- Start Page
- 265
- End Page
- 271
- ISSN
- 2671-9940
- Abstract
- The feeding habits of Okamejei kenojei were studied using 242 specimens collected from October 2010 to September 2011 in the coastal waters of Gadeok-do, Korea. O. kenojei was carnivorous feeder that consumed mainly shrimps, crabs, and fishes. Its diet also included small quantities of stomatods, cephalopods, amphipods. The size of O. kenojei ranged from 10.4 to 47.4 cm in total length (TL). O. kenojei showed ontogenetic dietary shift. <15.0, 15.0-19.9 cm size classes fed mainly on shrimps and amphipods. 20.0-24.9 cm size class fed mainly shrimps and crabs. Thereafter, shrimps and crabs were decreased with ontogenesis while fishes and cephalopods were increased. Increasing size, the mN/ST were constantly decreased, but mW/ST were constantly increased.
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