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Table 1 Seasonal transition of Chlorella variabilis viruses concentration (PFU mL-1) for nine sampling sites

From: Isolation and characterization of a virus (CvV-BW1) that infects symbiotic algae of Paramecium bursaria in Lake Biwa, Japan

Sampling date Water temp. (°C) Site 1 Site 2 Site 3 Site 4 Site 5 Site 6 Site 7 Site 8 Site 9
2004 May -- 2.67 21.3 21.3 2.67 21.3 2.67 ND 85.3 21.3
June 16.5-19.5 21.3 5.33 10.7 5.33 5.33 -- 10.7 171.0 42.7
July 29.3-32.0 ND 0.67 0.67 ND 1.33 -- ND 10.7 0.67
Sept. 24.0-25.5 0.67 5.33 10.7 10.7 -- -- -- -- --
Oct. 16.0-16.9 0.67 1.33 10.7 5.33 -- -- -- -- --
Nov. 10.2-12.0 5.33 5.33 5.33 5.33 -- -- -- -- --
Dec. 8.8-11.2 0.67 1.33 21.3 0.33 -- -- -- -- --
2005 Jan. 3.9-6.8 21.3 1.33 0.67 0.67 -- -- -- -- --
Feb. 5.2-8.3 1.33 1.33 10.7 5.33 -- -- -- -- --
Mar. 8.0-9.4 5.33 10.7 21.3 5.33 -- -- -- -- --
Apr. 17.0-18.8 5.33 21.3 21.3 5.33 -- -- -- -- --
June 23.0-24.0 5.33 10.7 42.7 10.7 -- -- -- -- --
  1. Sampling Sites: 1. Karasuma Pen., 2. Kita-Yamada, 3. Yabase Kihan Is., 4. Ohashi Marina, 5. Wani Fishing Port, 6. Aoyagi Beach, 7. Shirahige Beach, 8. Shin-Asahi Windmill Village, 9. Lake Yogo (also see Fig. 2). ND: Not detected. --: Not determined.