Testing methods and ecological consequences of large-scale removal of common carp

Introduced carp are widely distributed in NSW.  They dominate many of the fish communities within their range, particularly in the Murray-Darling Basin.  The successful establishment and spread of carp is aided by their tolerance to a wide range of environmental conditions, good mobility and high reproductive output.  These characteristics make carp persistent pests that are difficult to eradicate.  However, there are a number of possible ways to reduce carp numbers including biological control, habitat modification, physical control such as harvesting and chemical control.  Controlling carp requires a detailed assessment of the effectiveness and short-falls of alternative techniques. This report documents the findings of three separate studies.  The first study assessed different fishing gear types and provided information on the most cost-efficient and effective harvest techniques, particularly those suited for use by community groups wishing to remove carp from their local waterways.  The second study evaluated the effectiveness of poison baits (rotenone) on carp eradication and the impacts of the baits on non-target native fish.  The third study investigated ecological differences between large and small carp in enclosed waterways.

Author Gilligan, D. Gehrke, P. and Schiller, C.
Year 2005
Publisher NSW Department of Primary Industries
Department Fisheries
Pages 46 pp
ISBN/ISSN ISSN 1449-9967
Control method Fishing
Region NSW



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