Bacterial Numbers and Floras in the Water and Sediment of Subtropical Lakes Phewa, Begnas and Rupa in Nepal

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概要

• 論文の詳細を見る

• Bacterial numbers and floras in the water and sediment of subtropical Lakes Phewa, Begnas, and Rupa in the Pokhara Valley, Nepal, were surveyed in late monsoon season. In the water column at the deepest part of Lakes Phewa, Begnas, and Rupa, total bacteria estimated by the acridine orange direct count (AODC) method changed in the range of 1.1-2.4×10^6,1.7-2.4×10^6,and 3.2-3.5×10^6 cells/ml, respectively, and heterotrophic bacteria estimated by the spread plate method changed in the range of 2.5-18×10^3,2.0-4.0×10^3,and 6,9-14×10^3 CFU (colony-forming units)/ml, respectively. The distribution pattern of free-living and attached heterotrophic bacteria, size-fractionated with a 3.0μm Nuclepore filter, throughout the water column differed among the three lakes. The total and heterotrophic bacteria in the water at inlet were in the orders of 10^4-10^5 cells/ml and 10^3 CFU/ml, respectively, and those in the water at outlet showed a similar number to those in the surface water at each deepest part. The number of heterotrophic bacteria in the sediment at the deepest part was not different among the lakes and in the range of 5.9-8.9×10^5 CFU/cm^3 of wet sediment. All of 178 isolates purified from the three lakes, 64 from the water and 114 from the sediment, were identified to generic level. Only 20% of bacteria isolated from the water were purified, and most of those isolates belonged to Pseudomonas, Flavobacterium, and coryneforms. On the other hand, the bacterial floras in the sediment of the three lakes were dominated by Bacillus.

• 日本微生物生態学会の論文
• 1988-08-01

著者

• ISHIDA Yuzaburo

  Department of Fisheries, Faculty of Agriculture, Kyoto University

• Ishida Y

  Laboratory Of Microbiology Department Of Fisheries Faculty Of Agriculture Kyoto University

• Ishida Yuzaburo

  Department Of Fisheries Faculty Of Agriculture Kyoto University

• Shrestha Keshab

  Laboratory Of Microbiology Department Of Fisheries Faculty Of Agriculture Kyoto University

• Shrestha Rajendra

  Natural History Museum Institute Of Science And Technology Tribhuvan University

• Sako Y

  Graduate School Of Agriculture Kyoto University

• Sako Yoshihiko

  Laboratory Of Microbiology Department Of Fisheries Faculty Of Agriculture Kyoto University

• Nakanishi Masami

  Otsu Hydrobiological Station Faculty Of Science Kyoto University

• KONDA TOSHIFUMI

  Department of Biology, Faculty of Science, Tokyo Metropolitan University

• SAKO YOSHIHIKO

  Department of Fisheries, Faculty of Agriculture, Kyoto University

• SHRESTHA KESHAB

  Natural History Museum, Institute of Science and Technology, Tribhuvan University

• BHANDARY HEMANTA

  Natural History Museum, Institute of Science and Technology, Tribhuvan University

• Sako Yoshihiko

  Department Of Agriculture Kyoto University

• Konda Toshifumi

  Department Of Biology Faculty Of Science Tokyo Metropolitan University:(present Address)laboratory O

• Konda Toshifumi

  Department Of Bacterial And Blood Products National Institute Of Infectious Diseases

• Bhandary Hemanta

  Natural History Museum Institute Of Science And Technology Tribhuvan University

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