Effects of effluent contamination of wetlands on population level changes in Gambusia holbrooki

Alan Midgley, Shelley Burgin, Adrian Renshaw

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    While presence/absence of endocrine disruption has been widely observed within polluted wetlands, relatively few data have addressed population level changes for any species. This paper investigated the effects of endocrine disruption on the phenotypic sex ratio, size structure, biomass, and density of Gambusia holbrooki populations in wetlands used for storage of 1) tertiary treated sewage effluent; 2) urban stormwater runoff; and 3) wetlands without effluent supplementation (control wetlands). Those wetlands that had previously been determined to have endocrine disruption effects on G. holbrooki had lower density and biomass of fish than other wetlands. In contrast, the pattern of variation in the average length and phenotypic sex ratio of fish was not consistent with the effects of endocrine disruption.
    Original languageEnglish
    Pages (from-to)178-187
    Number of pages10
    JournalAustralian Zoologist
    Volume37
    Issue number2
    DOIs
    Publication statusPublished - 2014

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