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タイトル: 陸奥湾におけるマガレイおよびマコガレイの食物をめぐる種内の関係
その他のタイトル: Intraspecific Relationships for Food in Righteye Flounders Limanda herzensteini and L. yokohamae in Mutsu Bay
著者: 高橋, 豊美 著作を一覧する
発行日: 1987年
出版者: 日本水産学会 = The Japanese Society of Scientific Fisheries
誌名: 日本水産学会誌 = Bulletin of the Japanese Society of Scientific Fisheries
巻: 53
号: 2
開始ページ: 189
終了ページ: 194
出版社 DOI: 10.2331/suisan.53.189
抄録: Intraspecific relationships for food in righteye flounders Limanda herzensteini and L. yokohamae in Mutsu Bay, Aomori Prefecture, were studied. In both species, body length distributions did not differ very much among sea areas. In spring (May), the size (by wet weight) of prey in L. herzensteini stomachs was independent of fish length. But in summer, the prey size ingested by L. herzensteini became larger sequentially with increase of fish length, indicating the existence of strong size selection for prey. The same was apparent for L. yokohamae. Intensity of size selection of both species was closely related to the food availability and the intensity of food requirement in relation to their annual life period. Namely, the size selection was found as high abundance of food and inactive feeding of fish. These results suggested that the intraspecific competition for food in L. herzensteini may possibly occur in spring but in summer it becomes weak because they ingested prey of different size with fish length. On the other hand, for L. yokohamae, considering that in spring the kind of prey ingested by them depended on fish length, it seems probable that there is less likelihood of intraspecific competition for food at least during spring and summer.
Rights: ©1987 公益社団法人日本水産学会 The Japanese Society of Fisheries Science
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 高橋 豊美


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