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Biol Bull 122: 149-159. (February 1962)
© 1962 Marine Biological Laboratory
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THE POLYCHAETE CERATONEREIS TRIDENTATA AS A PEST OF THE SCALLOP AEQUIPECTEN GIBBUS

HARRY W. WELLS 1 and MARY JANE WELLS 1

1 Department of Biological Sciences, Florida State University, Tallahassee, Florida; and Department of Zoology, Duke University, Durham, North Carolina

The nereid polychaete Ceratonereis tridentata has been found occupying mudblisters in the calico scallop, Aequipecten gibbus, from off North Carolina. Characteristic Ceratonereis blisters were found in 24% of live scallops examined. These blisters can be distinguished easily from those of Polydora websteri by their larger size and often by their location in the scallop shell. Blister cavities may communicate with the mantle cavity or with the exterior. Anomalous malformations of the gills and the gonadal mass often accompany blisters having munication with the scallop mantle cavity. Ceratonereis tridentata is a facultative parasite of this scallop, also occurring among the epifauna of its shell.






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Copyright © 1962 by the Marine Biological Laboratory.