통영 연안 조간대의 조수웅덩이에 출현하는 점망둑 (Chaenogobius annularis)의 식성 = Feeding habits of longchin goby, Chaenogobius annularis in the tidepools at the intertidal zone of Tongyeong, Korea

국문 초록 (Abstract)

채집기간 동안 총 315개체의 점망둑 (Chaenogobius annularis)이 채집되었으며, 8.6%의 공복률을 보였다. 점망둑의 가장 중요한 먹이생물은 상대중요성지수비 50.5%를 차지한 요각류 (Copepoda)였다. 요각류 다음으로 해조류 (Seaweed)가 우점하였으며, 그 외 곤쟁이류 (Mysidacea), 만각류 (Cirripedia), 단각류 (Amphipoda) 등도 섭식하였으나 그 양은 많지 않았다. 점망둑은 성장함에 따라 요각류의 섭식은 감소하였고 해조류의 섭식이 증가하였다.

다국어 초록 (Multilingual Abstract)

The feeding habits of Chaenogobius annularis were studied based on gut contents analysis of 315 individuals, collected from September 2014 to August 2015 in the tidepools at the intertidal zone of Tongyeong, Korea. The size of C. annularis ranged from 17.0 to 54.0 mm in standard length (SL). C. annularis mainly consumed copepods (especially Tigriopus japonicus). Its diets included seaweeds, cirripeds, mysids and amphipods. C. annularis showed ontogenetic changes in feeding habits. Small individuals fed mainly on copepods. As body size increased, the portion of seaweed increased, whereas the consumption of copepods decreased.

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