Results of a freshwater bryozoan survey in the Pacific Northwestern United States

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This study represents the first known attempt to gather region-wide information on bryozoans in the Pacific Northwestern United States. For four weeks in July and August 1998, the authors traveled through Oregon and Washington as well as part of adjacent Idaho collecting colonies and sieving shoreline debris for statoblasts. Live colonies were narcotized and then preserved in 70% ethanol. Statoblasts were stored, dried, in sealed plastic bags. Many of the species encountered are common in eastern North America. Here the authors report finding Fredericella sultana and Plumatella mukaii in North America for the first time. They did not expect the widespread occurrence of Stephanella hina, a species well known in western Asia and previously known from only a few populations in New England and Virginia. Also found was a species closely resembling Plumatella fungosa, but with unusually large tubercles over all of the floatoblast.

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ELECTRONIC FILE - Zoology: Invertebrates

Citation: Marsh T, Wood TS. 2002. Results of a freshwater bryozoan survey in the Pacific Northwestern United States. In: Wyse Jackson PN, Buttler CJ, Spencer Jones ME, editors. Bryozoan Studies 2001. Proceedings of the 12th International Bryozoology Association Conference; 16–21 July 2001; Dublin, Ireland. Lisse, Netherlands: A.A. Balkema Publishers. p. 207-214.