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Review of the management of feral animals and their impact on ...

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Summary <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> effectiveness <str<strong>on</strong>g>of</str<strong>on</strong>g> carp c<strong>on</strong>trol methods<br />

Method <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

c<strong>on</strong>trol<br />

Netting <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

trapping<br />

Envir<strong>on</strong>mental<br />

manipulati<strong>on</strong><br />

Electr<str<strong>on</strong>g>of</str<strong>on</strong>g>ishing Moderate to<br />

high<br />

Exclusi<strong>on</strong> screens High<br />

Pois<strong>on</strong>ing Moderate<br />

Commercial<br />

fishing<br />

Recreati<strong>on</strong>al<br />

fishing<br />

Efficacy C<strong>on</strong>trol<br />

method<br />

efficiency<br />

High Low<br />

Target<br />

specificity<br />

Low to<br />

moderate<br />

Logistical<br />

practicalities<br />

Overall<br />

effectiveness<br />

Low Moderate<br />

146<br />

Advantages <str<strong>on</strong>g>of</str<strong>on</strong>g> method Disadvantages <str<strong>on</strong>g>of</str<strong>on</strong>g> method<br />

Unknown Unknown High High Unknown May reduce carp whilst<br />

improving river ecosystems <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

High<br />

Low<br />

Low<br />

High<br />

High<br />

Low<br />

High Moderate<br />

Cost effective at high densities Locating fish can be difficult<br />

N<strong>on</strong>-target issues<br />

native fish assemblages<br />

Effective for catching larger<br />

specimens<br />

Target specific<br />

High Low Useful for preventing reinvasi<strong>on</strong><br />

Moderate Low High Low Most useful for small isolated<br />

waters<br />

Low<br />

Moderate<br />

Biological c<strong>on</strong>trol Unknown Unknown Unknown<br />

Moderate Moderate<br />

Allows targeted c<strong>on</strong>trol <str<strong>on</strong>g>of</str<strong>on</strong>g> small<br />

residual populati<strong>on</strong>s<br />

Unknown High Low Unknown Target specific c<strong>on</strong>trol<br />

Unknown Unknown Unknown, but possibly low cost<br />

implementati<strong>on</strong> through selfdisseminati<strong>on</strong>.<br />

Does not remove all carp<br />

Very expensive <str<strong>on</strong>g>and</str<strong>on</strong>g> labour intensive<br />

Effectiveness unknown<br />

Difficult to apply in remote areas<br />

Does not get all carp present<br />

Expensive<br />

Suitable <strong>on</strong>ly for smaller waterways<br />

Only suitable to semi-enclosed<br />

waterways <str<strong>on</strong>g>and</str<strong>on</strong>g> lakes<br />

All carp need to be removed first<br />

Can clog with debris<br />

May be circumvented during<br />

flooding.<br />

Lack <str<strong>on</strong>g>of</str<strong>on</strong>g> target specificity<br />

Cannot be effectively applied in<br />

flowing waters<br />

Only viable at high populati<strong>on</strong>s<br />

densities.<br />

Low market value <str<strong>on</strong>g>of</str<strong>on</strong>g> catch<br />

Difficult in remote areas<br />

C<strong>on</strong>fined to easily accessible<br />

locati<strong>on</strong>s<br />

Low removal rate<br />

Public acceptance<br />

Clean-up <str<strong>on</strong>g>of</str<strong>on</strong>g> dead fish<br />

Market status

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