||Responses of Polychaetes to Cadmium-Contaminated Sediment: Comparison of Uptake and Behavior.
Olla, B. L. ;
Estelle, V. B. ;
Swartz, R. C. ;
Braun, G. ;
Studholme, A. L. ;
||Environmental Research Lab.-Narragansett, Newport, OR. Mark O. Hatfield Marine Science Center. ;National Marine Fisheries Service, Kodiak, AK. Northwest and Alaska Fisheries Center.
Water pollution ;
Animal behavior ;
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The burrowing behavior of three polychaete species (Nereis virens and Nephtys caeca) was examined after variable exposure periods (7, 14, 21 and 28 d) to sediment contaminated with a cadmium concentration of about 40 mg/kg (dry weight). Most comparisons of burrowing times and rates between exposed and unexposed worms were not statistically significant. Those that were significant were relatively minor, e.g., a maximum reduction in burrowing time of 6.3 s, and probably would have little ecological relevance. The feeding behavior of G. dibranchiata on the polychaete Euzonus mucronata was not affected by a 28-d exposure to cadmium-contaminated sediment.