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United States Department of Agriculture

Agricultural Research Service

Research Project: Exploration for Biological Control Agents of Downey Rose Myrtle Rhodomyrtus tomentosa in Asia

Location: Invasive Plant Research Laboratory

Project Number: 6032-22000-011-58-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Oct 22, 2013
End Date: May 6, 2014

1. Survey select areas of Hong Kong for natural enemies of particular interest: weevil, stem borer. 2. Survey areas of Guangxi Province and expand to neighboring provinces as permitted by local collaborators. 3. Identify local collaborator and coordinate logistics for surveys in Philippines during year 2. 4. Ship insects to quarantine facilities in Florida.

The methods will follow standard protocols that include foreign surveys for adapted herbivores from Southeast Asia and risk assessment studies of these species to determine their safety in preparation for approval to release from state and federal regulatory agencies. Molecular taxonomy will be undertaken to help identify the origin of the USA populations of the weed. Molecular techniques will also be used to supplement laboratory research to separate closely related species if they occur and to compare the insects found in different locations in Southeast Asia. Field surveys will include monitoring of non-target plant species growing with Rhodomyrtus in the field for any evidence of activity by targeted insects. Because of the relatively widespread occurrence of the plant in Southeast Asia, surveys will cover a range of climatic and site variables. Experienced local botanists and entomologists will be consulted wherever appropriate and identified specimens will be lodged in local collections. Evidence of parasitism of prospective agents will be investigated and this will supplement information on any seasonal variations of herbivore populations observed during regular surveys. Identification of specimens will rely on local specialists as well as group experts in the USA, particularly at the USDA/ARS Systematic Entomology Laboratory (SEL), Beltsville, Maryland.

Last Modified: 06/24/2017
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