- Heterosigma akashiwo
taxobox
name = "Heterosigma akashiwo"
regnum =Chromalveolata
phylum =Heterokont ophyta
classis =Raphidophyceae
familia =Heterosigmataceae
genus = "Heterosigma"
species = "H. akashiwo"
binomial = "Heterosigma akashiwo"
binomial_authority = (Y. Hada) Y. Hada ex Y. Hara & M. Chihara"Heterosigma akashiwo" is a microscopic
alga of the classRaphidophyceae . [ [http://www.algaebase.org/search/species/detail/?species_id=54512&sk=0&from=results Algaebase :: Species Detail ] ] Hallegraeff, G.M and Hara, Y 2003. Taxonomy of harmful marine raphidophytes. in "Manual on Harmful Marine Microalgae." Ed. Hallegraeff, D.M., Anderson, D.M. and Cembella, A.D. 2003. UNESCO Publishing. ISBN 92 3 103871 0.] "Heterosigma akashiwo" is a swimming marinealga that episodically forms toxic surface aggregations known asharmful algal bloom (HAB). "Heterosigma akashiwo" produces cysts as a resting stages."Heterosigma" forms massive golden tides that impact the survival of organisms at every trophic level. This alga has been shown to kill
finfish , compromise fish andsea urchin egg development and impactcopepod as well asoyster survival. [ [http://www.cofc.edu/~reu/internpubs/smith2005.pdf doi:10.1016/j.hal.2004.05.002 ] ] The 1997 "H. akashiwo" bloom inBritish Columbia , for example, coincided with a dramatic increase in mortality of captivesalmon . [http://www.pac.dfo-mpo.gc.ca/sci/aqua/AQ/aq85.pdf] Moreover, the global distribution of "H. akashiwo" is increasing as is the frequency of "H. akashiwo" HAB formation. [ [http://www.agu.org/revgeophys/anders01/anders01.html Toxic red tides and harmful algal blooms: A practical challenge in coastal oceanography ] ]References
External links
* [http://www.liv.ac.uk/hab/Data%20sheets/h_akas.htm The harmful phytoplankton project]
* [http://faculty.washington.edu/racat/index.php Heterosigma Research @ University of Washington]
* [http://www.ac.wwu.edu/~stromlab/ Heterosigma Research @ Western Washington University]
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