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Comparative toxicity of chemicals to earthworms
Author(s) -
Callahan C A,
Skirazi M A,
Neuhauser E F
Publication year - 1994
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620130213
Subject(s) - eisenia fetida , toxicity , weibull distribution , toxicology , biology , ecotoxicology , environmental chemistry , ecology , environmental science , earthworm , chemistry , statistics , mathematics , organic chemistry
The concentration‐response (mortality) relationships of four species of earthworms, Eisenia fetida (Savigny), Allo lobophora tuberculata (Eisen), Eudrilus eugemae (Kinberg), and Perionyx excavatus (Perrier) are summarized for 62 chemi cals 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 rep resentative of these four species and these chemicals