Common name: magnificent bryozoan
available through www.itis.gov
Identification: Sessile, colonial organism with ciliated tentacles attached to a large gelatinous mass (Pennak 1989; Wood 2010).
Native Range: P. magnifica was once restricted to warm freshwater systems east of the Mississippi, but now appears to be well established across North America (Pennak 1989; Wood 2010).
Interactive maps: Point Distribution Maps
Puerto Rico &
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Pectinatella magnifica are found here.
Table last updated 3/29/2018
† Populations may not be currently present.
Ecology: Found in freshwater lakes and rivers (Wood 2010).
Means of Introduction: Unknown
Status: <p> Unknown</p>
Impact of Introduction: <p> They have been known to clog water pipes (Wood 2010).</p>
References: (click for full references)
<p> Marsh, T., and T. S. Wood. 2002. Results of a freshwater bryozoan survey in the Pacific Northwestern United States, Pages 207-214 in Bryozoan Studies 2001, Wyse Jackson, D. P., C. J. Buttler, and M. S. Jones, eds., Balkema Publishers, Rotterdam, Netherlands.</p> <p> Neck, R. and R. Fullington. 1983. New records of the freshwater ectoproct P<span style="font-style: italic;">ectinatella magnifica</span> in eastern Texas. Texas J. Sci. 35:269-271.<br /> <br /> Pennak, R. W. 1989. Fresh-water Invertebrates of the United States, 3rd Ed., John Wiley and Sons, New York, 628 pp.<br /> <br /> Wood, T. S. Bryozoans. <u>Pages</u> 437-454 <em>in</em> Thorp, J. H. and A. P. Covich (eds.), 2010. Ecology and Classification of North American Freshwater Invertebrates. Academic Press, Inc., San Diego, CA, 1021 pp.</p>
<p> <em><a href="http://www.bio.umass.edu/biology/conn.river/bryozoa.html">Pectinatella magnifica in the Connecticut River</a></em></p>
Benson, A.J., and M. Cannister
Revision Date: 9/16/2013
Benson, A.J., and M. Cannister, 2018, Pectinatella magnifica (Leidy, 1851): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=2335, Revision Date: 9/16/2013, Access Date: 4/20/2018
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.