Clonal variation in general responses of Daphnia magna Straus to toxic stress. I. Chronic life-history effects

D. J. Baird, I. Barber, P. Calow

    Research output: Contribution to journalArticlepeer-review

    168 Scopus citations

    Abstract

    Compares responses of different genotypes of D. magna to cadmium and 3.4-dichloroaniline, under acute and chronic exposure. Large differences in interclonal responses were observed in acute tolerance to Cd (range of LC50: 0.06 - >100 ppb). Interclonal variation in chronic stress tolerance was also observed, although in this case differences (though significant) were relatively small (effect concentrations 25-50 ppb for DCA and 0.6-6.0 ppb for Cd). Deleterious effects on life-history variables and energy allocation followed the same pattern for all clones exposed to both toxicants. Specific mechanisms dominate differences in acute responses, whereas general mechanisms dominate in chronic responses. -from Authors

    Original languageEnglish (US)
    Pages (from-to)399-407
    Number of pages9
    JournalFunctional Ecology
    Volume4
    Issue number3
    DOIs
    StatePublished - Jan 1 1990

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