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Effects of photoenhanced toxicity of anthracene on ecological and genetic fitness of daphnia magna : A reappraisal
Author(s) -
Foran Jeffery A.,
Holst Linda L.,
Giesy John P.
Publication year - 1991
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.5620100314
Subject(s) - daphnia magna , brood , anthracene , daphnia , branchiopoda , biology , cladocera , avian clutch size , zoology , ecology , reproduction , toxicity , crustacean , chemistry , organic chemistry
Holst and Giesy [1] reported photoenhanced effects of anthracene exposure on reproduction of Daphnia magna in terms of total clutch size and survival over a 21‐d period. A reappraisal of those experiments, using additional data regarding time to first brood, average size of first brood and the intrinsic rate of increase, r m , for exposures with and without anthracene and/or ultraviolet radiation (UVR), reveals that inferred impacts on genetic fitness as exemplified by r m are significant only for the highest exposure tested, whereas ecological fitness, measured by the time to first brood, was unimpaired at any combination of UVR and anthracene.