|The salinity tolerance of freshwater macroinvertebrate eggs and hatchlings in comparison to their older life-stages: A diversity of responses|Kefford, B.J.; Nugegoda, D.; Zalizniak, L.; Fields, E.J.; Hassell, K.L. (2007). The salinity tolerance of freshwater macroinvertebrate eggs and hatchlings in comparison to their older life-stages: A diversity of responses. Aquat. Ecol. 41(2): 335-348. dx.doi.org/10.1007/s10452-006-9066-y
In: Aquatic Ecology. Springer: Dordrecht; London; Boston. ISSN 1386-2588, more
Behavioural responses; Eggs; Freshwater organisms; Hatching; Larval stages; Salinity tolerance; Acarina [WoRMS]; Diptera [WoRMS]; Gastropoda [WoRMS]; Hirudinea [WoRMS]; Australia, Victoria [Marine Regions]; Fresh water
|Authors|| || Top |
- Kefford, B.J.
- Nugegoda, D.
- Zalizniak, L.
- Fields, E.J.
- Hassell, K.L.
The tolerance to high salinity of older life stage macroinvertebrates could underestimate the effects of increasing salinity on freshwater macroinvertebrates. The salinity tolerance of the eggs and/or hatchlings of Glyptophysa gibbosa (Planorbidae), Glyptophysa aliciae, Glacidorbis sp. (Glacidorbidae), a Glossiponiidae, Piona cumberlandis (Pionidae), and Chironomus sp. (Chironomidae) were determined. The salinity tolerances of younger life-stages of species studied here and elsewhere were then compared to salinity tolerances of their mature aquatic or dominant life-stage. A diversity of responses have been observed with some species having similar salinity tolerances in all life-stages examined, whilst the eggs or hatchlings of other species had salinity tolerances ranging from 4% to 88% of their older life stages. On present knowledge, this diversity of responses presents some difficulties for simple rules of thumb to approximate sensitivity of young life-stages of freshwater macroinvertebrates inferred from their dominant stage's tolerance.