Changes in Marine Bacterial Populations in Ballast Water and Sediment of a LNG Carrier Bound for Qatar from Japan

スポンサーリンク

概要

• 論文の詳細を見る

• Changes in colony-forming eutrophic marine bacterial populations in a ship's ballast water and sediment were examined for 7 voyages in 2005 to 2006. In the ballast water taken in Japan, total numbers of colony-forming cells were highly variable in the range of 10^<3.1> to 10^<5.6> colony-forming units (CPU) ml^<-1> regardless of the season. The ballast water loaded in Japan was exchanged in the high seas in the Indian Ocean. During the exchange of ballast water, the values in the samples taken from discharging and reloading ballast water varied from 10^<3.2> to 10^<4.7> CPU ml^<-1> and 10^<2.7> to 10^<5.2> CPU ml^<-1>, respectively. When the reloaded ballast water was discharged at the Ras Laffan port in Qatar, the values varied from 10^<2.6> to 10^<5.1> CPU ml^<-1>. These results indicate that the ballast water exchange in the high seas is not effective as for the reduction of marine bacterial populations in ballast water. In the samples of sediment, the values between 10^<5.2> and 10^<7.2> CPU ml^<-1> were estimated for all seasons in which voyages took place, indicating the importance of management of sediment in ballast tanks as well as ballast water of ocean going vessels. As for the numbers of Vibrio sp. cells, which made colonies on the selective agar plate at 20℃, in the ballast water and sediment samples, the values varied from zero to 10^<5.4> CPU ml^<-1>, and so far examined, we did not detect pathogenic Vibrio cholerae, which can grow even at 37℃, throughout all the seven voyages.

• 社団法人日本航海学会の論文
• 2008-03-25

著者

• Mimura Haruo

  Faculty Of Maritime Sciences Kobe University

• Mimura Haruo

  Graduate School Of Maritime Sciences

• OKUYAMA Shuhei

  Graduate School of Maritime Sciences

• ISHIDA Hiroshi

  Graduate School of Maritime Sciences

関連論文

• Changes in the Number of Colony-Forming Marine Vibrio sp. Cells After Exposure to Shock Pressures in the Presence of Sodium Ascorbate
• The effect of shock pressures on the inactivation of a marine Vibrio sp.
• Lethality of Shock Pressures to a Marine Vibrio sp. Isolated from a Ship's Ballast Water
• Changes in Marine Bacterial Populations in Ballast Water and Sediment of a LNG Carrier Bound for Qatar from Japan
• Importance of Intact Structure of Cell Wall for a Marine Vibrio sp. Cell to Resistance against Sodium Cholate
• Analysis of QCM Gas Sensor Transient Response by Visualizing Gas Concentration
• EXPERIMENTAL STUDY ON INACTIVATION OF MARINE BACTERIA USING COLLAPSE OF MICROBUBBLES INDUCED BY SHOCK WAVES

スポンサーリンク