전자저널 > 전자저널 > Relationship between Clearance Rates and Metal Uptake Rates of Corbicula fluminea, Potamocorbula amurensis and Macoma althica: Influence of Water Temperature and Body Size

Relationship between Clearance Rates and Metal Uptake Rates of Corbicula fluminea, Potamocorbula amurensis and Macoma althica: Influence of Water Temperature and Body Size

Jung-Suk Lee and Byeong-Gwon Lee

Department of ℃eanography, Chonnam National University, Gwangju 500-757, Korea

A series of radiotracer studies were conducted to evaluate the influence of water temperature and/or body size on the clearance rates and uptake rates of Cd, Se and Zn in the Asiatic clam, Corbicula fluminea, Asian clam Potamocorbula amurensis and Balthic clam, Macoma balthica. Uptake rates of Cd, Se and Zn were estimated simultaneously with clearance rate of clams under 3 different water temperature conditions (5, 13 and 21℃). The weight specific clearance and metal uptake rates of P. amurensiswere increased with temperature, however, no consistent temperature effect was observed for the other clams. The variation of uptake rates of Cd, Se and Zn along with temperature or body size in each clam species was well associated with clearance rates. The inter-species as well as the intra-species difference of metal uptake rates could be well explained by the variation of clearance rates of clam individuals.

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