Possible biocontrol agents for Hydrilla

Angela Bownes- ARC-Plant Protection Research Institute

Hydrilla (Hydrilla verticillata) is a submerged aquatic macrophyte, native to Asia and Australia.

Hydrilla has invaded Josini Dam, KwaZulu-Natal, South Africa, and which is a serious economic and environmental aquatic weed.

Hydrilla is genetically diverse, with a wide distribution in its native range hence biotype matching was an important consideration for the biological control programme.

Two leaf-mining flies, Hydrellia pakistanae and Hydrellia sp. of different origin have been under consideration for release against South Africa hydrilla, a monoecious biotype of Malaysian/Indonesian origin.

For more information please see the fact sheets below:

Hydrilla (Hydrilla verticillata)

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