Growth suppression of the marine phytoplankton Alexandrium catenella and Tetraselmis sp. caused by ultrafiltrated seawater collected from coastal area on the mouth of Funka Bay

Filtrable pathogens infecting the phytoplankton Alexandrium catenella and Tetraselmis sp. were screened from coastal seawater on the mouth of Funka Bay, Hokkaido, Japan from 1993 to 1994. Growth suppression against these phytoplankton species was observed in the seawater samples collect ed during September and October 1993. The growth of A. catenella was suppressed from 40 to 45%, and that of Tetraselmis sp. was suppressed from 20 to 30%. Re-inoculation of the culture filtrate of

[1]  C. R. Jones,et al.  An investigation of the presence of ultramicrocells in natural mineral water , 1999, Letters in applied microbiology.

[2]  K. Nagasaki,et al.  Isolation of a virus infectious to the harmful bloom causing microalga Heterosigma akashiwo (Raphidophyceae) , 1997 .

[3]  Shi Zheng—li,et al.  Viruses and virus-like particles of eukaryotic algae , 1996 .

[4]  E. Cosper,et al.  Isolation of Virus Capable of Lysing the Brown Tide Microalga, Aureococcus anophagefferens , 1994, Science.

[5]  Y. Ishida,et al.  Virus-like particles in Heterosigma akashiwo (Raphidophyceae): a possible red tide disintegration mechanism , 1994 .

[6]  G. Bratbak,et al.  Viral mortality of the marine alga Emiliania huxleyi (Haptophyceae) and termination of algal blooms , 1993 .

[7]  J. V. Van Etten,et al.  Viruses and viruslike particles of eukaryotic algae , 1991, Microbiological reviews.

[8]  I. Koike,et al.  Abundance of Viruses in Marine Waters: Assessment by Epifluorescence and Transmission Electron Microscopy , 1991, Applied and environmental microbiology.

[9]  M. Cottrell,et al.  Use of Ultrafiltration To Isolate Viruses from Seawater Which Are Pathogens of Marine Phytoplankton , 1991, Applied and environmental microbiology.

[10]  G. Bratbak,et al.  Production and decay of viruses in aquatic environments , 1991 .

[11]  M. Cottrell,et al.  Wide-spread occurrence and clonal variation in viruses which cause lysis of a cosmopolitan, eukaryotic marine phytoplankter Micromonas pusilla , 1991 .

[12]  Curtis A. Suttle,et al.  Infection of phytoplankton by viruses and reduction of primary productivity , 1990, Nature.

[13]  G. Bratbak,et al.  Enumeration and biomass estimation of planktonic bacteria and viruses by transmission electron microscopy , 1990, Applied and environmental microbiology.

[14]  G. Bratbak,et al.  High abundance of viruses found in aquatic environments , 1989, Nature.

[15]  F. Taylor,et al.  A virus which lyses the marine nanoflagellate Micromonas pusilla , 1979, Nature.