서해연안 조간대에 서식하는 점망둑(Chasmichthys dolichognathus)의 식성

• 영문명: Feeding Habits of Chasmichthys dolichognathus in the Intertidal Zone in the West Coast of Korea
• 발행기관: 군산대학교 수산과학연구소
• 저자명: 김종연(Jong-Yeon KIM)
• 간행물 정보: 『군산대학교 수산과학연구소 연구논문집』제4집, 363~374쪽, 전체 12쪽
• 주제분류: 농수해양 > 해양학
• 파일형태: PDF
• 발행일자: 2004.07.02

영문 초록

To know the food chain of an intertidal community, feeding habits of Chasmichthys dolichognathus were studied by analyzing stomach contents. C dolichognatluIs were monthly collected and the feeding habits were investigated in the intertidal zone of Dodun-ri, Sochon from May 1997 to April 1998. Fullness of stomach was increased twice a day in the morning and afternoon except winter. C dolichognathus(1.0-6.0cm TL) was a carnivore which consumed mainly gammarid amphipods, polychaetes, copepods and crabs. Its diets included minor quantities of gastropods, shrimps, bivalves, cirriped larvae and stomatopods. C dolichognatluIs showed ontogenetic changes in feeding habits. Small individuals fed mainly on gammarid amphipods, polychaetes and copepods. While the portion of the stomach contents attributable to polychaetes and crabs increased steadily with increasing fish size, consumption of copepods decreased progressivly. Although gammarid amphipods, polychaetes, copepods and crabs were major prey organisms for all seasons, the relative proportion of these food items changed with seasons. Consumption of copepods was relatively high in spring and fall and consumption of gammarid amphipods, polvchaetes and crabs was relatively high in summer.

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