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Photo of <em>Oxyphysis oxytoxoides</em> by Gabriela Hannach, King County Environmental Lab

Photo credit: Gabriela Hannach, King County Environmental Lab

Phytoplankton of the month — April 2018

Oxyphysis oxytoxoides

Oxyphysis are medium sized asymmetrical dinoflagellates, approximately 16-24μm wide and 60-80μm long. The cells are elongated and are always less than 4 times its width. The epitheca is asymmetrical with a spine on the right, and its hypotheca has a spine at the tip. Oxyphysis is heterotrophic, meaning it consumes other plankton and therefore has no chloroplasts. Oxyphysis are common in cold and warm temperate seas.

For more information see: A Taxonomic Guide to Some Common Marine Phytoplankton, by Rita Horner (Biopress Ltd. 2002)

SoundToxins, a diverse partnership of Washington state shellfish and finfish growers, environmental learning centers, Native tribes, and Puget Sound volunteers, is a monitoring program designed to provide early warning of harmful algal bloom events in order to minimize both human health risks and economic losses to Puget Sound fisheries.

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