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Effect of cadmium on reproduction of daphnids in a small aquatic microcosm
Author(s) -
JanatiIdrissi M.,
Guerbet M.,
Jouany J. M.
Publication year - 2001
Publication title -
environmental toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 77
eISSN - 1522-7278
pISSN - 1520-4081
DOI - 10.1002/tox.1044
Subject(s) - cadmium , daphnia magna , microcosm , chlorella vulgaris , cladocera , reproduction , daphnia , biology , ecotoxicology , environmental chemistry , offspring , zoology , chlorella , branchiopoda , zooplankton , algae , chemistry , toxicology , botany , ecology , toxicity , pregnancy , genetics , organic chemistry
Chlorella vulgaris colonies were grown as nutrient agar for one week, followed by addition of Daphnia magna in overlying water for a second week. A range of concentrations of cadmium were added to the Chlorella or to the Chlorella followed by higher cadmium concentrations in the overlying fluid. A dose‐dependent reduction in reproduction was observed with increased cadmium. When parent daphnids were first exposed to a lower cadmium concentration, and their offspring of preconditioned juvenile daphnids then exposed to a higher concentration, cadmium tolerance in new‐born daphnids was observed. © 2001 John Wiley & Sons, Inc. Environ Toxicol 16: 361–364, 2001