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NTIS 바로가기Korean journal of Ichthyology = 한국어류학회지, v.30 no.2, 2018년, pp.92 - 99
고명훈 (이화여자대학교 에코과학부) , 방인철 (순천향대학교 생명시스템학과)
Feeding ecology of endangered Korean endemic miho spine loach, Cobitis choii, was investigated in Jicheon Stream, Geumgang River, Korea to provide ecological characteristics and baseline data for its restoration. C. choii is active during daylight hours above sand from March to October when the wate...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
미호종개란? | 본 연구종인 미호종개 Cobitis choii는 잉어목(Cypriniformes), 미꾸리과 (Cobitidae)에 속하는 저서성 소형어류로, 1984년 Kim and Son에 의해 신종으로 발표되었다. 신종 발표 당시 미호종개는 금강 중·하류 지역에 폭넓게 서식하고 있었으나 (Kim and Son, 1984; Hong, 2004), 서식지의 준설과 하천오염, 각종 공사 등으로 인해 근래에는 백곡저수지와 갑천, 유구천, 지천 하류부에만 서식하는 것으로 보고되어 급격한 서식지 축소가 일어났다 (CHA, 2009; Ko et al. | |
미호종개의 활동기는 언제인가? | choii의 생태학적 특징을 밝히고 복원의 기초자료를 확보하기 위해 섭식생태를 충청남도 청양군 청남면 인양리의 금강지류 지천에서 조사를 실시하였다. 미호종개는 3월부터 10월까지 활동기로, 11월부터 2월까지는 월동기로 나누어졌으며, 활동기에는 주행성 어류로 기질 (모래) 밖으로 나와 활동하였다. 소화관내용물을 상대중요성 지수 (index of relative importance, IRI)로 분석한 결과, 파리목 (Diptera) 69. | |
미호종개 Cobitis choii의 채집망과 사용하는 마취제는 무엇인가? | 소화관내용물 분석을 위한 채집은 섭식이 왕성한 4월에 실시하였다. 채집은 투망 (망목 6×6 mm)과 족대 (망목 4×4, 1×1 mm) 등을 이용하였으며, 채집된 개체는 현장에서 마취제 MS-222 (Sindel, Canada)로 마취한 후 수컷 가슴지느러미에 나타나는 골질반 (lamina circularis)의 유무에 따라 치어와 암컷, 수컷으로 구분하여 전장을 측정한 후 대부분 바로 방류하였다. 소화관내용물 분석 개체수는 연령별로 5개체씩 선별하여 10% 포르말린 수용액에 바로 고정하였으며, 연령은 전장빈도분포법 (Ricker, 1971)으로 추정하여 구분하였다. |
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