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サケ科魚類の腸内細菌叢に関する研究. V, 溯河魚の腸内細菌叢

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Title: サケ科魚類の腸内細菌叢に関する研究. V, 溯河魚の腸内細菌叢
Other Titles: Studies on the Intestinal Microflora of Salmonids. V, The Intestinal Microflora of the Anadromous Salmon
Authors: 吉水, 守1 Browse this author →KAKEN DB
木村, 喬久2 Browse this author →KAKEN DB
坂井, 稔3 Browse this author
Authors(alt): Yoshimizu, Mamoru1
Kimura, Takahisa2
Sakai, Minoru3
Issue Date: Nov-1976
Publisher: 日本水産学会
Journal Title: 日本水産学会誌
Journal Title(alt): Bulletin of the Japanese Society of Scientific Fisheries
Volume: 42
Issue: 11
Start Page: 1291
End Page: 1298
Publisher DOI: 10.2331/suisan.42.1291
Abstract: Ten adult pink salmon (Oncorhynchus gorbuscha) caught at the mouth of a river for collecting their eggs and reared about 3 months in fresh water without feeding, 20 anadromous chum salmon (Oncorhynchus keta) caught for the same purpose, and 10 cultured masu salmon (Oncorhynchus masou) which had reached their maturity were used as test samples. The pink and chum salmon were provided by the Oshima Branch of the Hokkaido Salmon Hatchery and the masu salmon, by the Mori Branch of the Hokkaido Fish Hatchery. Viable counts were determined in the intestinal slime of these salmon. About 370 strains were isolated from the above samples. The composition of the microflora was determined according to the scheme of SHEWAN et al. (1960). The results are summarized as follows: 1) The number of microorganisms in the intestinal slime of the anadromous pink and chum salmon ranged from 10^2 to 10^8 per gram. In the mature masu salmon, it was less, ranging from nil to 10^5 per gram. 2) The predominant genera in the intestinal slime of the anadromous pink and chum salmon were the Vibrio, Pseudomonas, and Aeromonas. All of the Vibrio were of the marine or halophilic type, the Pseudomonas were of the halophilic and terrestrial type, and most of the Aeromonas were of the terrestrial type. 3) The Aeromonas were predominant in the intestinal microflora of the mature masu salmon cultured in fresh water.
1. 淡水池に飼育された成熟期のサクラマスの雌を除き,淡水池に蓄養中の溯上カラフトマスおよび溯上中のサケのいずれにおいても,腸内粘質物中の生菌数は10^2~10^8/gの範囲で測定された。2. 淡水池に飼育された成熟期のサクラマスの腸内菌叢はAeromonasがその主体を成していた。3. 溯上直後のサケ科魚類の腸内菌叢は,好塩型ないし海洋型のVibrioがその主体を成すが,以後徐々に好塩型ないし海洋型のPseudomonas,つづいて陸型のPseudomonasおよびAeromanasによつて置きかわり,棲息環境水が海水から淡水に変わるにつれ,腸内菌叢は徐々に好塊型から陸型に変化することが観察された。
Rights: © 1976 公益社団法人日本水産学会
© 1976 The Japanese Society of Fisheries Science
Type: article
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉水 守

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