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Marenzelleria viridis
Image courtesy of Leslie Harris, Natural History Museum of Los Angeles County, USA
Marenzelleria viridis
Taxonomic Group: Annelids-Polychaetes


Marenzelleria viridis is a spionid polychaete, one of several species of red-gilled mudworms. It is native to the East Coast of North America from Nova Scotia to Delaware and probably Newfoundland to Chesapeake Bay; although further sampling is needed since there are at least two additional cryptic species in this area (M. neglecta and M. bastropi). It is introduced in California, Scotland, the North Sea, and the Baltic Sea. Juveniles and adults of M. viridis inhabit mudflats and shallow muddy bottoms, usually in areas of variable or low salinity. This species has reached high densities in its invaded range, and in some locations has replaced native infauna and altered sediment characteristics.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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