Chemical cues
and milfoil weevil host choice
Researchers are attempting to determine what chemical cues weevils
use to locate milfoil host plants and whether these are specific
to local populations.
Is fish predation
limiting weevil populations?
The milfoil weevil is native to many lakes where milfoil has invaded,
yet milfoil has become very abundant. Predation on weevils
by insectivorous fish may prevent weevils from reaching the density
necessary to control milfoil.
Effect of
sediment quality on weevil development and plant resistance
Abundant sediment nutrients may lead to milfoil plants that are
more nutritious to the weevil, resulting in faster development.
However, plants with an abundant nutrient supply may be more resistant
and able to recover from weevil damage.
Monitoring weevil and milfoil populations
Continued monitoring to track the effect of the milfoil weevil
on Eurasian watermilfoil in Minnesota and examine the effects
of milfoil on native plant communities.
Reports Available in pdf - All reports © R.M. Newman et al.
last updated: 5/18/06