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Q&A ViewAttendees 9

Plant-Insect Ecosystems

Student Competition 10-Minute Paper

Grad P-IE: Chemical Ecology

Identification of plant volatiles for integrated pest management of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) in strawberry in Florida

Monday, November 1, 2021
10:54 AM – 11:06 AM MT
Location: Colorado Convention Center, Four Seasons Ballroom 4
In-Person Student Competition
Current thrips management practices in strawberry rely on foliar application of synthetic insecticides and evolution of resistance is an on-going problem. Several studies have examined application of herbivore induced plant volatiles (HIPVs) for management of Frankliniella occidentalis Pergande (Thysanoptera: Thripidae). However, this is not well explored for the management of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) in open-field strawberry production.

Therefore, the objectives of this study are to: 1) assess the response of S. dorsalis to uninfested and infested strawberry plants by olfactometer assays; and 2) identify HIPVs released in response to S. dorsalis infestation. The volatiles from plants of two commonly grown strawberry cultivars will be collected from: 1) clean plants; 2) plants infested with S. dorsalis only; 3) plants with mechanical injury. The head space volatiles will be collected from plants using a push and pull collection system. Furthermore, three dual-choice experiments with S. dorsalis will be conducted: 1) clean air vs. uninfested plants; 2) clean air vs. plants infested by S. dorsalis; and 3) control plants vs. plants infested by S. dorsalis. This study will describe the role of strawberry HIPVs in host selection preference by S. dorsalis. The results of this study will enable identification of potential plant volatiles that may be used for integrated pest management of S. dorsalis in strawberry.