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한국 동해에 출현하는 명태(Gadus chalcogrammus)의 위내용물 조성Diet of the Walleye Pollock Gadus chalcogrammus in the East Sea, Korea
- Other Titles
- Diet of the Walleye Pollock Gadus chalcogrammus in the East Sea, Korea
- Issue Date
- 2020
- Publisher
- 한국수산과학회
- Keywords
- Gadus chalcogrammus; Diets; Feeding habits; East Sea
- Citation
- 한국수산과학회지, v.53, no.3, pp 456 - 463
- Pages
- 8
- Indexed
- KCI
- Journal Title
- 한국수산과학회지
- Volume
- 53
- Number
- 3
- Start Page
- 456
- End Page
- 463
- ISSN
- 0374-8111
- Abstract
- The diet of the walleye pollock Gadus chalcogrammus, was studied by examining the stomach contents of 864 individuals. Using gill nets, samples were collected monthly from January to December 2017 in Jugwang, Sokcho,Yangyang, Uljin, Ganggu, and Gampo, Korea. The specimens ranged in total length (TL) from 16.6 to 75.2 cm. G. chalcogrammus fed mainly on Euphausia pacifica (Euphausiacea) and less on Cephalopoda, Pisces, Mysidacea,and Macrura. The results indicated that G. chalcogrammus is a specialist feeder, feeding mainly Euphausiacea. With growth, however, its diet shifted from Euphausiacea to Cephalopoda, Macrura and Pisces. Smaller individuals(<40.0 cm TL) consumed mainly Euphausiacea. The proportion of Euphausiacea decreased with increasing bodysize, whereas the consumption of Cephalopoda and Macrura increased gradually.
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