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噴火湾周辺海域におけるスケトウダラの漁場学的研究. IV, 餌料としての動物プランクトン分布の季節変化

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タイトル: 噴火湾周辺海域におけるスケトウダラの漁場学的研究. IV, 餌料としての動物プランクトン分布の季節変化
その他のタイトル: Ecological Studies on the Alaska Pollack in the Adjacent Waters of the Funka Bay, Hokkaido. IV, Seasonal Variations of Zooplankton Distribution in Food for the Alaska Pollack
著者: 前田, 辰昭 著作を一覧する
高橋, 豊美 著作を一覧する
上野, 元一 著作を一覧する
発行日: 1980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: 46
号: 6
開始ページ: 671
終了ページ: 674
出版社 DOI: 10.2331/suisan.46.671
抄録: Euphausids, Amphipods and Copepods are important food organisms for the Alaska pollack in the adjacent waters of the Funka Bay. In this paper, the seasonal variations of distribution of these three crustacean groups were examined on the date obtained from the vertical hauls with a NORPAC net at six definite stations once each month from February 1974 to February 1975. (1) Euphausia pacifica of calyptopis and furcilia stages appeared at the inshore station of 50m depth with the inflow of the surface layer water of the Oyashio current in February and March. From July to September, the larger one of this species were predominant at the offshore stations (300-350m depth) where the tip of the bottom layer water of the Oyashio current existed, and became most abundant in the same stations with the access of the mixed water mass of the Tsugaru warm current and the Oyashio mid water current in December and January. (2) Amphipods, mainly Parathemisto japonica, were abundant in the offshore stations in March-April and July-August. Their seasonal distribution showed approximately a similar trend to that of E. pacifica. (3) Pseudocalanus minutus of small size in the Copepods group appeared at the inshore station from March to May. Calanus cristatus, C. plumchrus and Eucalanus bungii bungii were chiefly distributed at the offshore stations (300-400m depth). Their abundance increased from February to May and decreased from August to September. (4) There is a large variation in the abundance of distribution of these crustacean groups during some years in the abundance of the Alaska pollack, suggesting that the feeding ecology of the Alaska pollack also varies widely with the availability of these food organisms.
Rights: ©1980 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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