Effect of stress on a freshwater benthic detritivore: Scope for growth in Gammarus pulex

Lorraine Maltby, Caroline Naylor, Peter Calow

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    71 Scopus citations

    Abstract

    Scope for growth (SfG), a measure of energy balance (between food intake and metabolic output) within animals, has been used as an indicator of pollution stress in marine systems. However, it has not been used commonly in freshwater systems and here we investigate the sensitivity of SfG in Gammarus pulex, a benthic freshwater crustacean, under conditions often associated with pollution. The effects of four specific substances were investigated; a metal (zinc), an organic (3,4-dichloroaniline), and two dissolved gases (oxygen and ammonia). In all cases SfG was reduced by the stress, primarily due to a depression in energy intake. Only with ammonia was energy output (respiration) significantly affected.

    Original languageEnglish (US)
    Pages (from-to)285-291
    Number of pages7
    JournalEcotoxicology and Environmental Safety
    Volume19
    Issue number3
    DOIs
    StatePublished - Jun 1990

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