Electrophysiological and Behavioral Responses of Drosophila suzukii (Diptera: Drosophilidae) Towards the Leaf Volatile β-cyclocitral and Selected Fruit-Ripening Volatiles
| Autor: | Jaime C. Piñero, Bruce A. Barrett, L Grant Bolton |
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| Rok vydání: | 2019 |
| Předmět: |
Male
0106 biological sciences Insect Control 01 natural sciences chemistry.chemical_compound Drosophilidae Hexyl acetate Animals Bioassay Drosophila suzukii Drosophila Ecology Evolution Behavior and Systematics Aldehydes Ecology biology Host (biology) food and beverages Ripening biology.organism_classification Attraction 010602 entomology Horticulture chemistry Fruit Insect Science Female Diterpenes 010606 plant biology & botany |
| Zdroj: | Environmental Entomology. 48:1049-1055 |
| ISSN: | 1938-2936 0046-225X |
| DOI: | 10.1093/ee/nvz092 |
| Popis: | The spotted-wing drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae), is attracted to numerous volatile organic compounds (VOCs) emitted from several ripening, small fruit crops. However, the strawberry leaf terpenoid, β-cyclocitral, is reportedly very attractive to D. suzukii (but not to all Drosophila spp.). This suggests that leaf and fruit VOCs may be critical sources needed to further develop a more species-specific D. suzukii monitoring lure, or semiochemically based attract-and-kill systems. This study investigated the electrophysiological responses of male and female D. suzukii towards selected host fruit-ripening VOCs and β-cyclocitral, along with behavioral responses toward combined fruit VOCs with β-cyclocitral. Electroantennogram (EAG) results revealed a positive dose–response, for both sexes, as concentrations increased for all VOCs tested. For β-cyclocitral, hexyl acetate and methyl butyrate, the mean male EAG responses were significantly greater than the female responses at lower doses. In caged behavioral bioassays, only in the β-cyclocitral treatments were the mean number of flies captured (sexes combined) significantly greater than that captured in solvent (mineral oil) controls. Our study has demonstrated that while single fruit-based VOCs alone are not enough to cause a strong behavioral attraction by both male and female D. suzukii, the addition of β-cyclocitral did produce a significant attraction response from both sexes. In both bioassays, males had higher responses to β-cyclocitral than females, which suggest a greater sensitivity to this compound. Further studies are needed to ascertain the role β-cyclocitral may play in the development of a more species-specific D. suzukii monitoring lure. |
| Databáze: | OpenAIRE |
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