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United States Department of Agriculture

Agricultural Research Service

Research Project: DEVELOPMENT OF A NEW BIOLOGICAL CONTROL AGENT FOR YELLOW STARTHISTLE

Location: Exotic and Invasive Weeds Research

2011 Annual Report


1a.Objectives (from AD-416)
Test host plant specificity of Larinus filiformis in quarantine laboratory and field experiments in order to submit a petition to USDA-APHIS requesting permission to release it as a biological control agent of yellow starthistle.


1b.Approach (from AD-416)
We will conduct choice and no-choice oviposition experiments on the flower head weevil Larinus filiformis in our quarantine laboratory and conduct a field host specificity evaluation of L. filiformis in its native range in Turkey. If it is sufficiently host-specific, we will submit a petition to USDA-APHIS to obtain a permit to release the weevil.


3.Progress Report

The weevil, Larinus fliformis, was received in our quarantine laboratory for host specificity evaluation as a prospective agent for yellow starthistle. A field experiment was initiated in Trabzon, Turkey, where we released Larinus fliformis to evaluate its potential risk to nontarget plant species. Planning, reporting and analysis were conducted by email and periodic meetings, and an onsite visit in June 2011.


Last Modified: 4/21/2014
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