
TY  - JOUR
A1  - Kefford, Ben J. 
A1  - Papas, Phil J. 
A1  - Nugegoda, Dayanthi 
T1  - Relative salinity tolerance of macroinvertebrates from the Barwon River, Victoria, Australia
JF  - Marine and Freshwater Research
JO  - Mar. Freshwater Res.
Y1  - 2003
VL  - 54
IS  - 6
SP  - 755
EP  - 765
KW  - acute salinity tolerance, ecotoxicity, stream invertebrates.
UR  - https://doi.org/10.1071/MF02081 
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&#8211;1 (mean 31 mS cm&#8211;1, n = 57) and followed a log-normal distribution. The most salt-sensitive groups tested were Baetidae (LC50 value range: 5.5&#8211;6.2 mS cm&#8211;1), Chironomidae (10 mS cm&#8211;1) and several soft-bodied non-arthropods (Oligochaeta, Gastropoda, Nematomorpha, Tricladida and Hirudinea; 9&#8211;14 mS cm&#8211;1). Other groups, from least to most tolerant, were non-baetid Ephmeroptera (&#62;12.6&#8211;15 mS cm&#8211;1), Plecoptera (&#62;12.6&#8211;&#62;20 mS cm&#8211;1), Trichoptera (9&#8211;&#62;26 mS cm&#8211;1), Corixidae (18&#8211;26 mS cm&#8211;1), non-corixid Hemiptera (33&#8211;44 mS cm&#8211;1), Coleoptera (19&#8211;54 mS cm&#8211;1), Hydracarina (39 mS cm&#8211;1) and Odonata (30&#8211;55 mS cm&#8211;1), and macrocrustaceans (Decapoda, Isopoda and Amphipoda; 38&#8211;76 mS cm&#8211;1). 
ER  -

