[MAIPC] garlic mustard weevil biocontrol released in Ontario

[Marc Imlay]

https://blog.cabi.org/2018/12/18/giving-garlic-mustard-the-biocontrol-treatm
ent/

 

In August and October 2018, Dr. Rob Bourchier, from Agriculture and
Agri-Food Canada (AAFC) released the
<https://www.cabi.org/projects/project/62322> first biocontrol agent against
garlic mustard in North America - the root mining weevil Ceutorhynchus
scrobicollis.  Weevil larvae in lab-inoculated plants and adults were
released at a garlic mustard site in Ontario, Canada.

A population  model predicted  that of all agents investigated, C.
scrobicollis will have the most significant impact on garlic mustard. If the
weevils survive the winter and establish themselves in the wild, they are
expected to reduce the density of the weed at existing sites and slow its
spread to new sites.  The project will continue to closely monitor the
weevil's progress and assess whether they live up to the model's prediction.

 

 

n 2019, the weevil rearing program at the University of Minnesota, European
field collections by CABI and field expertise from AAFC will be combined to
expand the number of weevil release sites in Ontario. These release
experiments will focus on defining the conditions that favour C.
scrobicollis survival and population growth.



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