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NTIS 바로가기생태와 환경 = Korean journal of ecology and environment, v.51 no.2, 2018년, pp.184 - 191
이상연 (국립생태원 생태조사연구실) , 최유성 (국립생태원 생태기반연구실) , 주성배 (국립생태원 생태기반연구실) , 정길상 (국립생태원 생태기반연구실) , 유영한 (공주대학교 생명과학과)
During the breeding season, some Eurasian Oystercatchers (Haematopus ostralegus osculans) in Yubu Island foraged in the open mudflat area nearby the breeding ground, instead of the tide water line area, main feeding site throughout the year. We found significant differences in foraging behavior and ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
검은머리물떼새의 주요 먹이원은? | 드러난 갯벌에서 섭식하는 경우 조수 경계부에 비해 걸음수가 더 많고, 먹이탐색을 위해 중복탐침과 찔러넣기 행동의 비율이 더 높았지만, 섭식성공률은 현저히 낮았다. 또한, 주요 먹이원은 드러난 갯벌에서는 갯지렁이류였지만, 조수 경계부에서는 복족류(서해비단고둥)와 이매패류로 섭식지 유형간 뚜렷한 차이가 있었다. 번식기에 국한하여 드러난 갯벌을 섭식지로 이용하는 현상은 본래 선호하는 섭식지에 비해 효율이 떨어지더라도 번식 성공을 위해 번식지와 가까운 지역을 섭식지로 이용하는 것으로 판단된다. | |
검은머리물떼새의 섭식지는? | 섭금류인 검은머리물떼새(Haematopus ostralegus osculans)는 주로 조수 경계부를 섭식지로 이용하는데, 번식기에는 간조시 드러난 갯벌에서 섭식하는 개체들이 일부 관찰된다. 드러난 갯벌에서 섭식하는 경우 조수 경계부에 비해 걸음수가 더 많고, 먹이탐색을 위해 중복탐침과 찔러넣기 행동의 비율이 더 높았지만, 섭식성공률은 현저히 낮았다. | |
최적섭식이론이란? | 일반적으로 야생조류는 먹이원으로부터 얻어지는 에너지의 정도에 따라 전반적인 생활사가 결정된다 (Paynter, 1974). 따라서 체내로 흡수된 먹이원에서 에너지를 최대로 생산하고, 그 중 소비되는 에너지를 최소로 하는 최적섭식이론 (optimal foraging theory)을 따르는 것은 야생조류의 생존에 필수적일 것이다 (Stephens and Krebs, 1986; Krebs and Davies, 1993). 특히, 생산성이 높은 갯벌을 섭식지로 이용하는 섭금류 (Harrington, 2003; van de Kam et al. |
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