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Student 10-Minute Paper

Plant-Insect Ecosystems

Student Competition

Student

Grad Competition P-IE: Insecticide Resistance

Susceptibility of Megalurothrips usitatus and Frankliniella insularis to insecticides

Monday, November 6, 2023
11:54 AM – 12:06 PM ET
Location: Gaylord National Resort & Convention Center, Chesapeake 3
In-Person Student Competition
Megalurothrips usitatus (Bagnall) (Thysanoptera: Thripidae) originates from Asia and was first confirmed in south Florida in early 2020. Megalurothrips usitatus is a pest of leguminous crops and has significantly impacted production of snap bean (Phaseolus vulgaris) in the Homestead Agricultural Area (HAA) south of Miami. Megalurothrips usitatus also infests specialty legumes grown in the HAA including lablab bean (Lablab purpureus). Frankliniella insularis (Franklin) (Thysanoptera: Thripidae) is also abundant on lablab bean. Populations of each species were collected from infested lablab fields in the HAA in 2020 and 2021. Colonies were established at the UF IFAS Gulf Coast Research and Education Center where they were subjected to a maximum dose insecticide bioassay to determine susceptibility to commonly used insecticides. The results of this research have been used to develop thrips management guidelines for growers in south Florida.