Helisoma sp.

For measuring the bioaccumulation of " Tc in fishes and snails a small experimental freshwater pond was spiked with " I c. The concentration factors based on the calculated body burden (fresh wt) for carps Caprinus carpio), mosquitofishes Gam-busia affinis). and snails (Helisoma sp.) were 11, 75, and 121, respectively. ITic effective biological half-lives were 2,5,4.3 and 21.3 d. respectively [69]. 

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