Location: Subtropical Horticulture ResearchTitle: The Lychee Erinose Mite: Pest Status in Florida and Management
|REVYNTHI, ALEXANDRA - University Of Florida|
|ATAIDE, LIVIA - University Of Florida|
|CANON, MARIA ALEJANDRA - University Of Florida|
|HAMMOND, JOHN - US Department Of Agriculture (USDA)|
|OCHOA, RON - US Department Of Agriculture (USDA)|
|CARRILLO, DANIEL - University Of Florida|
Submitted to: Florida Entomological Society Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 6/8/2022
Publication Date: 6/20/2022
Citation: Revynthi, A. M., L. M. Silva Ataide, M. A. Canon, P. E. Kendra, N. Tabanca, J. Hammond, R. Ochoa, and D. Carrillo. 2022. The lychee erinose mite: pest status in Florida and management. 103rd Annual Meeting of the Florida Entomological Society. Gainesville, FL. 20-22 Jun 2022.
Technical Abstract: The lychee erinose mite (LEM) (Aceria litchii) is an important pest of lychee. This minute mite prefers to feed on young, new flush causing the formation of hypertrophic trichomes, known as erinea. Its recent interception in Lee County, Florida, triggered a quarantine and a subsequent eradication program. We correlated erinea development with the mite population and developed a method to evaluate acaricidal efficacy. Using this method, we tested ten acaricides for efficacy as prophylactic treatments to protect the new flush. We also evaluated the response of LEM to different temperatures. Additionally, we developed a postharvest treatment using a paraffinic oil that can disinfest the fruit of LEM, thereby allowing the growers to ship outside the quarantine area. Little information is available regarding the ecology of this pest and how it locates the new flush while being hidden inside the erinea. Therefore, current research focuses on the chemical ecology of LEM. Plant volatiles collected from different plant structures revealed that the ratio of three sesquiterpenes (ar-curcumene, zingiberene and ß-caryophyllene) is different in the new flush compared with other plant structures, which could be associated with the preference of LEM for the new flush. Presently we are testing the attraction of LEM to two ginger oils containing these three compounds. Results of this study can serve as the basis for development of a lure that can be used to control this pest in the field.