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- Title
Benzaldehyde: an alfalfa‐related compound for the spring attraction of the pest weevil Sitona humeralis (Coleoptera: Curculionidae).
- Authors
Lohonyai, Zsófia; Vuts, József; Kárpáti, Zsolt; Koczor, Sándor; Domingue, Michael J; Fail, József; Birkett, Michael A; Tóth, Miklós; Imrei, Zoltán
- Abstract
BACKGROUND Sitona weevils (Coleoptera: Curculionidae) are a species complex comprising pests of many leguminous crops worldwide, causing damage to young plants as adults and to rootlets as larvae, resulting in significant yield losses. Timely detection of migrating adult weevils is needed to determine when deployment of control measures becomes necessary. With the aim of developing plant volatile‐based lures for Sitona spp. detection, we investigated the responses of S. humeralis to host plant‐related aromatic compounds. RESULTS: In olfactometer studies, both male and female S. humeralis responded positively to the odour of alfalfa flowers, a source of aromatic volatiles. In single sensillum recordings, basiconic sensilla located on the third and fourth terminal segments of the antennal club of both sexes were found to respond to benzaldehyde at doses of 10−5 and 10−4 g, suggesting that the weevil is able to detect this compound at the peripheral sensory level. In field studies, S. humeralis was attracted to benzaldehyde in the spring, but not in the autumn. CONCLUSION: Benzaldehyde, as described in this study, may be a suitable candidate for the development of monitoring tools for S. humeralis. © 2019 Society of Chemical Industry
- Subjects
SOCIETY of Chemical Industry (Great Britain); BENZALDEHYDE; CURCULIONIDAE; BEETLES; ALFALFA; AROMATIC compounds; PESTS
- Publication
Pest Management Science, 2019, Vol 75, Issue 12, p3153
- ISSN
1526-498X
- Publication type
Article
- DOI
10.1002/ps.5431