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Toxicant‐induced mortality in models of daphnia populations
Author(s) -
Hallam Thomas G.,
Lassiter Ray R.,
Li Jia,
Mckinney William
Publication year - 1990
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.5620090508
Subject(s) - toxicant , population , biology , daphnia magna , daphnia , organism , toxicology , ecology , ecological succession , demography , toxicity , genetics , medicine , crustacean , sociology
A method to determine the mortality effects of a hydrophobic chemical on a population is proposed. The ecotoxicological protocol is based on individual organism response and is derived from the static theory of “survival of the fattest.” This study, focusing upon effects of mortality and the effects of toxicant stress on population succession, examines the static assessment survival of the fattest in a dynamic population model. A premise in this approach is that risk assessment should not be based solely upon chemical properties of the toxicant and that the biology of the exposed organisms is an important factor in the determination of effects.