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An assessment of a proposal to eradicate non-native fish from priority rivers in the Cape Floristic Region, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Marr --- Freshwater Research Unit, Zoology Department, South Africa ND Impson --- CapeNature, South Africa D Tweddle --- , South AfricaNon-native fish are considered the most important threat to the survival of the indigenous freshwater fishes in the Cape Floristic Region (CFR). A pilot project to evaluate the use of the piscicide rotenone to eradicate non-native fish from selected reaches... -
Analysis of active rotenone concentration during treatment of the Rondegat River, Cape Floristic Region, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E Slabbert --- Department of Microbiology, South Africa MS Jordaan --- CapeNature Scientific Services, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaMost endemic freshwater fish species of the Cape Floristic Region are listed as threatened, due mainly to the impacts of invasive alien fish species. The piscicide rotenone has been identified as a potential tool to aid the conservation of indigenous... -
Rapid bioassessment of the effects of repeated rotenone treatments on invertebrate assemblages in the Rondegat River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TA Bellingan --- Department of Zoology and Entomology, South Africa DJ Woodford --- Centre for Invasion Biology, South Africa J Gouws --- Scientific Services, CapeNature, South Africa MH Villet --- Department of Zoology and Entomology, South Africa OLF Weyl --- Centre for Invasion Biology, South AfricaThe potential collateral effects of eradicating invasive fishes in streams necessitate the monitoring of invertebrate communities during treatment. In an environmental rehabilitation programme, non-native smallmouth bass were removed from the lower reaches of the Rondegat River, Western Cape, South Africa,... -
Effect of rotenone on gill-respiring and plastron-respiring insects
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AJ Booth --- Department of Ichthyology and Fisheries Science, South Africa S Moss --- Department of Ichthyology and Fisheries Science, South Africa OLF Weyl --- Department of Ichthyology and Fisheries Science, South AfricaRotenone, a commonly-used piscicide, interferes with the cellular respiration of aquatic vertebrates and invertebrates by preventing the uptake of oxygen. While dose-response relationships have been developed for fish, there are limited comparative data available on aquatic insects that respire either...