Nocturnal swimming ofScolecolepides viridis (Polychaeta: Spionidae)
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AdultScolecolepides viridis were collected by nocturnal plankton tows in the Lafayette River, Norfolk, Virginia. All adults (40–70 mm) were filled with ripe gametes. Swimming individuals were collected only at night on ebb tides. Large (36–60 setigers) post-metamorphic worms were also collected in the plankton. The occurrence of down estuary adult movement is used to explain paradoxical information concerning this species within estuary distribution and early development.
KeywordsParadoxical Information Ripe Gamete Spionid Polychaete Nocturnal Movement High Salinity Region
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