Document Type



Maine Sea Grant College Program

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Rights assessment remains the responsibility of the researcher. No known restrictions on publication.

Publication Date


Publisher location

Orono, ME

Abstract/ Summary

The mud blister worm, Polydora websteri Hartman (Loosanoff and Engle 1943), burrows into the shells of bivalve mollusks, including Eastern oysters (Crassostrea virginica), sea scallops (Placopecten magellanicus) and blue mussels (Mytilus edulis).

This report is for oyster producers interested in controlling mud blister worms, which when present in large numbers can reduce the value of oysters sold to the half-shell market. Although other species of blister-causing worms occur in several genera including Polydora, Pseudopolydora, and Boccardia, this report focuses specifically on Polydora websteri.


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Rights Statement

No Copyright - United States