海洋細菌に及ぼす銅の影響-II : 海水中に於ける特殊な銅細菌の存在と分布
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概要
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In the previous paper, the author reported on the depressing effect of copper sulfate upon the development of marine bacterial community, and then he described the existence of the bacteria tolerated fairly well against copper. The present report gives a preliminary survey on the occurrence and distribution of the specific “copper bacteria” that have a difinite affinity for copper in the sea water. The results of the investigation are summerized as follows: (1) The specific “copper bacteria” that develop as the red-brown colonies on the WAKSMANs copper medium, are detected always in the sea water and in the surface slime films on glass slides submerged in the sea at Aburatsubo Bay. General characteristics of the bacteria are the same as WAKSMANs observation (1943). (2) The amounts of “copper bacteria” vary with the fluctuation of total bacterial population in sea water (Fig. 1). And the vertical distribution of the “copper bacteria” is not same in the depths or seasons (Table. 1). (3) When the glass slides are submerged in the sea for abont two weeks, so many “copper bacteria” are frequently detected in the slime films attached on the glass slides (Table. 2). (4) The relative amounts of “copper bacteria” in the sea are different from place to place: in general, they seem to distribute widely in the sea water of the oceanic region, while they scarcely distribute in the sea wafer of the coastal region where the land drainages or river stresms affect strongly (Table. 3, 4).
- 公益社団法人 日本水産学会の論文