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Supplemental petition for cage-and open-field-release of the gall midge Jaapiella ivannikovi (Diptera: Cecidomyiidae ) for biological control of Russian knapweed in Canada. Petition for Release to CFIA Technical Advisory Group on Biological Control.

Bourchier, R.S. (2009). Supplemental petition for cage-and open-field-release of the gall midge Jaapiella ivannikovi (Diptera: Cecidomyiidae ) for biological control of Russian knapweed in Canada. Petition for Release to CFIA Technical Advisory Group on Biological Control.

Abstract

The objective of this supplement is to request the release of the gall midge, Jaapiella ivannikovi Fedotava for the biological control of the invasive plant, Russian knapweed, (Acroptilon repens L.) in Canada. This petition reviews the weed distribution, weed biology, related plant species and biological control history of Russian knapweed in Canada, as a supplement to Collier et al. (2007; attached). Collier et al. (2007) review the taxonomy, distribution, and biology of Russian knapweed for the United States, and the biology and host-range of J. ivannikovi. Information on weed taxonomy and the biology of A. acroptilonica is similar and appropriate for Canada and thus not repeated.

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