Distribution of Vibrio halioticoli around an Abalone-farming Center in Japan
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概要
- 論文の詳細を見る
Vibrio halioticoli is the dominant bacterial species in the gut of abalone, Haliotis discus hannai. The bacterium may contribute to the digestion of seaweed, and form a symbiotic association with the host. However, the process by which the bacterium colonizes the gut of abalone is unknown and intriguing given the non-motile nature of V. halioticoli. To clarify the colonization process, the distribution of the bacterium in seawater, as well as the fecal material and diet of abalone was investigated at an abalone farm. Viable bacterial counts of V. halioticoli were determined in each sample using a colony hybridization technique specifically designed for the bacterium. The count in seawater and culture seawater was 3 CFU/ml. The number of V. halioticoli in a diatom bed used as a diet for juvenile abalone was 7.9×10^2 CFU/g. Fractionation of the diatom bed sample using 0.2 and 8.0-μm filters indicated that the viable count was higher in the attached fraction (3.4×10^2 CFU/g; >8.0 μm) than in free-living fraction (76 CFU/g; 0.2 μm-8.0 μm). Furthermore, viable V. halioticoli was estimated to be 3.6×10^3 CFU/g in the fecal material of juvenile abalone which had ingested diatoms, as compared to 1.2×10^5 CFU/g in that of juveniles fed on artificial diet. These results suggest that V. halioticoli cells in seawater and/or on diatoms contribute to the colonization of the gut in abalone.
- 日本微生物生態学会の論文
著者
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Yoshimizu M
Hokkaido Univ. Hokkaido Jpn
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Yoshimizu Mamoru
Laboratory Of Microbiology Faculty Of Fisheries Hokkaido University
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Tanaka Reiji
Laboratory Of Microbiology Graduate School Of Fisheries Sciences Hokkaido University
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SAWABE Tomoo
Laboratory of Microbiology, Faculty of Fisheries, Hokkaido University
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EZURA Yoshio
Laboratory of Microbiology, Faculty of Fisheries, Hokkaido University
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Yoshimizu M
Laboratory Of Microbiology Graduate School Of Fisheries Sciences Hokkaido University
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Sawabe Tomoo
Laboratory Of Microbiology Faculty Of Fisheries Hokkaido University
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Ezura Yoshio
Laboratory Of Microbiology Faculty Of Fisheries Hokkaido University
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Ezura Y
Hokkaido Univ. Hokkaido Jpn
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Ezura Y
Faculty Of Fisheries Hokkaido University
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Yoshimizu Mamoru
Laboratory Of Biochemistry And Biotechnology Division Of Marine Bioscience Graduate School Of Fisher
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Tanaka Reiji
Laboratory Of Marine Microbiology Graduate School Of Bioresources
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