||Comparative Toxicity of Chemicals to Earthworms.
Callahan, C. A. ;
Shirazi, M. A. ;
Neuhauser., E. F. ;
||Corvallis Environmental Research Lab., OR. ;Niagara Mohawk Power Corp., Syracuse, NY.
Chemical compounds ;
Species diversity ;
Weibull density functions ;
Eisentia fetida ;
Allolobophora tuberculata ;
Eudrilus eugeniae ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The concentration-response (mortality) relationships of four species of earthworms, Eisentia fetida, Allolobophora tuberculata, Eudrilus eugeniae, and Perionyx excavatus are summarized for 62 chemicals and two test protocols. A Weibull function is used to summarize these data for each chemical in terms of sensitivity and toxicity, in addition to the LC50. The estimation of the Weibull parameters a and k summarize the entire concentration-response relationship. This technique should be applicable to a variety of testing protocols with different species whenever the goal is summarizing the shape of the concentration-response curves to fully evaluate chemical impact on organisms. In some cases for these data four orders of magnitude separate LC50s of the soil test and the contact test for the same chemical and species. All four species appear to be similar in range of toxicity and tolerance to these chemicals, suggesting that Eisenia fetida may be representative of these four species and these chemicals.
||Pub. in Environmental Toxicology and Chemistry, v13 n2 p291-298 1994. Prepared in cooperation with Niagara Mohawk Power Corp., Syracuse, NY.
|NTIS Title Notes
||Reprint: Comparative Toxicity of Chemicals to Earthworms.
||57Z; 57Y; 99A; 99F
||PC A02/MF A01