||Acute Toxicities of Selected Heavy Metals to the Softshell Clam, 'Mya arenaria'.
Eisler., Ronald ;
||Environmental Research Lab., Narragansett, RI.
Marine biology ;
Lethal dosage ;
Seasonal variations ;
Soft shell clams ;
Heavy metals ;
Toxic substances ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Static acute toxicity bioassays with adult softshell clams and salts of copper, cadmium, zinc, lead, manganese, and nickel were conducted at 30 o/oo salinity and 22C. Concentrations fatal to 50% in 168 hours, in mg/l (ppm) metal added at start, were 0.035 for Cu, 0.150 for Cd, 1.55 for Zn, 8.80 for Pb, 300.0 for Mn, and >50.0 for Ni. Additional tests were conducted with Zn2+ and Cu2+ at 30 o/oo during fall (17.5C) and winter (4C); clams displayed increasing survival with decreasing temperature. For Cu, LC-50 (336 hr) values at 17C and 4C were 0.086 and >3.00 mg/l, respectively; for Zn these were 2.65 and >25.0, respectively.
||Pub. in Bulletin of Environmental Contamination and Toxicology, v17, n2, p137-145 1977.
|NTIS Title Notes
||Reprint: Acute Toxicities of Selected Heavy Metals to the Softshell Clam, 'Mya arenaria'.
|PUB Date Free Form
||6T; 6F; 8A; 57Y; 68D; 47D
||PC A02/MF A01