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Erythrocyte micronuclei in winter flounder (Pseudopleuronectes americanus): Results of field surveys during 1980–1988 from Virginia to Nova Scotia and in Long Island Sound


Erythrocyte micronuclei (MN) frequencies of 280 winter flounder (Pseudopleuronectes americanus) from Chesapeake Bay to the southern Scotian Shelf including Long Island Sound were measured. The MN data were combined with data previously reported for 224 flounder and the combined data sets were analyzed. Incidences of MN were elevated sixfold in flounder from the New York Bight Apex as compared to frequencies for fish from the inshore Gulf of Maine and Block Island Sound, and twice those found in Georges Bank and Long Island Sound flounder. Inshore New Jersey fish had higher MN frequencies than those from inshore Gulf of Maine and Block Island Sound. The occurrence of MN in flounder from inshore Virginia was higher than in flounder from inshore Gulf of Maine and Block Island Sound. The large subset of stations from Long Island Sound indicated higher frequencies of MN in flounder from Hempstead and Shoreham as compared to most other sites in the Sound.

There was no significant difference in the frequency of MN between males and females, but males had significantly more MN than sexually immature flounder. Flounder over the entire sampling area had increased levels of MN during the fall months of the year. This is probably influenced by the maternal cycle of gonadal maturation.

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Hughes, J.B., Hebert, A.T. Erythrocyte micronuclei in winter flounder (Pseudopleuronectes americanus): Results of field surveys during 1980–1988 from Virginia to Nova Scotia and in Long Island Sound. Arch. Environ. Contam. Toxicol. 20, 474–479 (1991).

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  • Waste Water
  • Water Management
  • Water Pollution
  • Field Survey
  • Entire Sampling