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Keyword: biological control agents

Evaluation of establishment of Cyphocleonus achates and its potential impact on spotted knapweed

Publications Posted on: December 14, 2015
Environmental characteristics of a site may greatly influence the establishment and impact of biological control agents on the target weed. A biological control agent that is highly successful in one region may be virtually ineffective in another (Gurr and Wratten 2000).

Response to Thomas et al.: Biocontrol and indirect effects

Publications Posted on: December 14, 2015
In a recent TREE article [1], we identified three categories of unintended indirect effects that can arise from host-specific biological control agents: (i) ecological replacement; (ii) compensatory responses; and (iii) food-web interactions. Although our review focused on the biocontrol of plant pests, we suggested these concepts also apply to the biocontrol of invertebrate pests. Thomas et al.

Indirect effects of host-specific biological control agents

Publications Posted on: December 14, 2015
Biological control is a crucial tool in the battle against biological invasions, but biocontrol agents can have a deleterious impact on native species. Recognition of risks associated with host shifting has increased the emphasis on host specificity of biocontrol agents for invasive weeds.

Effects of biological control agents and exotic plant invasion on deer mouse populations

Publications Posted on: April 21, 2015
Exotic insects are commonly introduced as biological control agents to reduce densities of invasive exotic plants. Although current biocontrol programs for weeds take precautions to minimize ecological risks, little attention is paid to the potential nontarget effects of introduced food subsidies on native consumers. Previous research demonstrated that two gall flies (Urophora affinis and U.

Factors influencing plant invasiveness

Publications Posted on: December 02, 2009
Invasiveness of spotted knapweed and biological control agents. Dean and Yvette are examining the influence of drought on the invasiveness of spotted knapweed (Centaurea maculosa) and its susceptibility to herbivory by biological control agents. In collaboration with the University of Montana and Forest Health Protection, researchers have constructed 150 experimental plots.