Relative salinity tolerance of macroinvertebrates from the Barwon River, Victoria, Australia

B.J. Kefford, P.J. Papas, D. Nugegoda

    Research output: Contribution to journalArticle

    106 Citations (Scopus)

    Abstract

    Salinity levels are rising in many freshwater environments, yet there are few direct measurements of salinity tolerance of organisms likely to be salt sensitive. The relative salinity tolerance to artificial seawater of macroinvertebrates from the Barwon River in Victoria, Australia, was assessed by measuring the 72-h lethal concentrations required to kill 50% of individuals (LC50). LC50 values ranged from an electrical conductivity of 5.5 to 76 mS cm-1 (mean 31 mS cm-1, n = 57) and followed a log-normal distribution. The most salt-sensitive groups tested were Baetidae (LC50 value range: 5.5-6.2 mS cm-1), Chironomidae (10 mS cm-1) and several soft-bodied non-arthropods (Oligochaeta, Gastropoda, Nematomorpha, Tricladida and Hirudinea; 9-14 mS cm-1). Other groups, from least to most tolerant, were non-baetid Ephmeroptera (>12.6-15 mS cm-1), Plecoptera (>12.6->20 mS cm-1), Trichoptera (9->26 mS cm-1), Corixidae (18-26 mS cm-1), non-corixid Hemiptera (33-44 mS cm-1), Coleoptera (19-54 mS cm-1), Hydracarina (39 mS cm-1) and Odonata (30-55 mS cm-1), and macrocrustaceans (Decapoda, Isopoda and Amphipoda; 38-76 mS cm-1).
    Original languageUndefined
    Pages (from-to)755-765
    Number of pages11
    JournalMarine and Freshwater Research
    Volume54
    Issue number6
    DOIs
    Publication statusPublished - 2003

    Cite this

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    title = "Relative salinity tolerance of macroinvertebrates from the Barwon River, Victoria, Australia",
    abstract = "Salinity levels are rising in many freshwater environments, yet there are few direct measurements of salinity tolerance of organisms likely to be salt sensitive. The relative salinity tolerance to artificial seawater of macroinvertebrates from the Barwon River in Victoria, Australia, was assessed by measuring the 72-h lethal concentrations required to kill 50{\%} of individuals (LC50). LC50 values ranged from an electrical conductivity of 5.5 to 76 mS cm-1 (mean 31 mS cm-1, n = 57) and followed a log-normal distribution. The most salt-sensitive groups tested were Baetidae (LC50 value range: 5.5-6.2 mS cm-1), Chironomidae (10 mS cm-1) and several soft-bodied non-arthropods (Oligochaeta, Gastropoda, Nematomorpha, Tricladida and Hirudinea; 9-14 mS cm-1). Other groups, from least to most tolerant, were non-baetid Ephmeroptera (>12.6-15 mS cm-1), Plecoptera (>12.6->20 mS cm-1), Trichoptera (9->26 mS cm-1), Corixidae (18-26 mS cm-1), non-corixid Hemiptera (33-44 mS cm-1), Coleoptera (19-54 mS cm-1), Hydracarina (39 mS cm-1) and Odonata (30-55 mS cm-1), and macrocrustaceans (Decapoda, Isopoda and Amphipoda; 38-76 mS cm-1).",
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    Relative salinity tolerance of macroinvertebrates from the Barwon River, Victoria, Australia. / Kefford, B.J.; Papas, P.J.; Nugegoda, D.

    In: Marine and Freshwater Research, Vol. 54, No. 6, 2003, p. 755-765.

    Research output: Contribution to journalArticle

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    AU - Kefford, B.J.

    AU - Papas, P.J.

    AU - Nugegoda, D.

    N1 - cited By 92

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    N2 - Salinity levels are rising in many freshwater environments, yet there are few direct measurements of salinity tolerance of organisms likely to be salt sensitive. The relative salinity tolerance to artificial seawater of macroinvertebrates from the Barwon River in Victoria, Australia, was assessed by measuring the 72-h lethal concentrations required to kill 50% of individuals (LC50). LC50 values ranged from an electrical conductivity of 5.5 to 76 mS cm-1 (mean 31 mS cm-1, n = 57) and followed a log-normal distribution. The most salt-sensitive groups tested were Baetidae (LC50 value range: 5.5-6.2 mS cm-1), Chironomidae (10 mS cm-1) and several soft-bodied non-arthropods (Oligochaeta, Gastropoda, Nematomorpha, Tricladida and Hirudinea; 9-14 mS cm-1). Other groups, from least to most tolerant, were non-baetid Ephmeroptera (>12.6-15 mS cm-1), Plecoptera (>12.6->20 mS cm-1), Trichoptera (9->26 mS cm-1), Corixidae (18-26 mS cm-1), non-corixid Hemiptera (33-44 mS cm-1), Coleoptera (19-54 mS cm-1), Hydracarina (39 mS cm-1) and Odonata (30-55 mS cm-1), and macrocrustaceans (Decapoda, Isopoda and Amphipoda; 38-76 mS cm-1).

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    SN - 0067-1940

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