Blessing J.J.,20 Meiers Rd |
Blessing J.J.,Griffith University |
Marshall J.C.,20 Meiers Rd |
Balcombe S.R.,Griffith University
Journal of Fish Biology | Year: 2010
Two killing methods were compared on the clupeid, bony bream Nematolosa erebi and it was found that ice-slurry immersion was more humane than benzocaine overdose. The use of ice-slurry for killing N. erebi should be accepted as a standard humane method and considered similarly for other warm-water species. © 2010 QLD Department of Environment and Resource Management. Journal compilation © 2010 The Fisheries Society of the British Isles.
Kefford B.J.,RMIT University |
Zalizniak L.,RMIT University |
Dunlop J.E.,20 Meiers Rd |
Dunlop J.E.,Griffith University |
And 2 more authors.
Environmental Pollution | Year: 2010
The effects of suspended and deposited sediments on the macroinvertebrates are well documented in upland streams but not in slower flowing lowland rivers. Using species found in lowland lotic environments, we experimentally evaluate mechanisms for sediments to affect macroinvertebrates, and in one experiment whether salinity alters the effect of suspended sediments. Suspended kaolin clay reduced feeding of Ischnura heterosticta (Odonata: Coenagrionidae) at high turbidity (1000-1500 NTU) but had no effects on feeding of Hemianax papuensis (Odonata: Aeshnidae) and Micronecta australiensis (Hemiptera: Corixidae). In freshwater (0.1 mS/cm), survival of Ischnura aurora was poor in clear water, but improved with suspended kaolin. Growth and feeding of I. aurora were unaffected by suspended sediments and salinity. Burial (1-5 mm) of eggs with kaolin or sand reduced hatching in Physa acuta (Gastropoda: Physidae), Gyraulus tasmanica (Gastropoda: Planorbidae) and Chironomus cloacalis (Diptera: Chironomidae). Settling sediments may pose greater risk to lowland lotic invertebrates than suspended sediments. © 2009 Elsevier Ltd.