Abstract
Drosophila suzukii (Diptera: Drosophilidae) infests a variety of commercial fruits, including cherries and other soft-skinned fruits. After the cropping season of most cultivated crop hosts, it heavily infests the fruit of a wild host-plant, Osyris wightiana in southwest China. Here, we employ gas chromatography-electroantennographic detection (GC-EAD) together with behavioral bioassays and a trapping experiment to identify volatile semiochemicals emitted by O. wightiana that are involved in D. suzukii attraction. GC-EAD recordings of D. suzukii antenna showed responses to 13 compounds, including α-pinene, 3-methylbutyl acetate, 2-hexanol, E-β-ocimene, Z-3-hexenol, β-caryophyllene, α-humulene, and six unidentified compounds. The flies were attracted by seven individual EAD-active compounds at low doses (0.01 and 0.1 μg), but were repelled at high doses (10 and 100 μg). In a similar manner, a blend of seven EAD-active compounds at low doses (0.1 and 1 μg) was attractive to female flies, but became repulsive at high doses (10 μg). The low dose of the blend was as attractive as the fruit volatiles, although both were less attractive than the fruits. The blend attracted both female and male D. suzukii and other Drosophila flies. The percentage of D. suzukii out of all flies captured by the blend was significantly greater than that captured by the control. These results indicate that the EAD-active volatile compounds emitted by fruits of O. wightiana play an important role in D. suzukii attraction, and have the potential to be used for management of D. suzukii.
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Claims 4
Claim · model-written summary
D. suzukii antennae responded to 13 Osyris volatile compounds.
- Taxon
- Osyris wightiana
Osyris wightianat0 - Interactor
- D. suzukii
Drosophila suzukiie0pest - Outcome
- responses to 13 compoundse0
- Value
- 13 compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GC-EAD recordings of D. suzukii antenna showed responses to 13 compounds, including α-pinene, 3-methylbutyl acetate, 2-hexanol, E-β-ocimene, Z-3-hexenol, β-caryophyllene, α-humulene, and six unidentified compounds”
t0“Osyris wightiana”
Claim · model-written summary
The blend attracted male and female D. suzukii and other Drosophila flies.
- Taxon
- Osyris wightianaOsyris wightianat0
- Interactor
- D. suzukiiDrosophila suzukiie0pest
- Outcome
- attracted both female and male D. suzukii and other Drosophila fliese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The blend attracted both female and male D. suzukii and other Drosophila flies”
t0“Osyris wightiana”
Claim · model-written summary
The blend captured a significantly greater percentage of D. suzukii than control.
- Taxon
- Osyris wightianaOsyris wightianat0
- Treatment
- blende0
- Interactor
- D. suzukiiDrosophila suzukiie0pest
- Outcome
- percentage of D. suzukii out of all flies capturede0
- Direction
- greatere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of D. suzukii out of all flies captured by the blend was significantly greater than that captured by the control”
t0“Osyris wightiana”
Claim · model-written summary
The authors suggest these fruit volatiles could manage D. suzukii.
- Taxon
- Osyris wightianaOsyris wightianat0
- Interactor
- D. suzukiiDrosophila suzukiie0pest
- Outcome
- management of D. suzukiie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EAD-active volatile compounds emitted by fruits of O. wightiana play an important role in D. suzukii attraction, and have the potential to be used for management of D. suzukii”
t0“Osyris wightiana”