Journal article
Egg-Surface Bacteria Are Indirectly Associated with Oviposition Aversion in Bactrocera dorsalis
Current Biology, Vol.30(22), pp.4432-4440.e4
2020
PMID: 32946751
Abstract
Finding a suitable oviposition site is a challenging task for a gravid female fly, because the hatched maggots have limited mobility, making it difficult to find an alternative host. The oriental fruit fly, Bactrocera dorsalis, oviposits on many types of fruits. Maggots hatching in a fruit that is already occupied by conspecific worms will face food competition. Here, we showed that maggot-occupied fruits deter B. dorsalis oviposition and that this deterrence is based on the increased β-caryophyllene concentration in fruits. Using a combination of bacterial identification, volatile content quantification, and behavioral analyses, we demonstrated that the egg-surface bacteria of B. dorsalis, including Providencia sp. and Klebsiella sp., are responsible for this increase in the β-caryophyllene contents of host fruits. Our research shows a type of tritrophic interaction between micro-organisms, insects, and insect hosts, which will provide considerable insight into the evolution of insect behavioral responses to volatile compounds.
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•B. dorsalis avoid oviposition on egg-infested fruits 48 h after initial oviposition•Flies recognize egg-infested fruits via increased β-caryophyllene emissions•Egg-surface-associated bacteria induce β-caryophyllene emission by infested fruits•Providencia sp. and Klebsiella sp. are the main active egg-surface bacteria
Li et al. report that the oriental fruit fly B. dorsalis avoids oviposition on fruits that have been previously infested by conspecifics. Flies identify egg-infested fruits via increased β-caryophyllene emissions, which are induced by bacteria enriched on the egg.
Details
- Title
- Egg-Surface Bacteria Are Indirectly Associated with Oviposition Aversion in Bactrocera dorsalis
- Authors
- Huijing Li (Author) - South China Agricultural UniversityLu Ren (Author) - South China Agricultural UniversityMingxue Xie (Author) - South China Agricultural UniversityYang Gao (Author) - South China Agricultural UniversityMuyang He (Author) - South China Agricultural UniversityBabar Hassan (Author) - South China Agricultural UniversityYongyue Lu (Author) - South China Agricultural UniversityDaifeng Cheng (Author) - South China Agricultural University
- Publication details
- Current Biology, Vol.30(22), pp.4432-4440.e4
- Publisher
- Cell Press
- DOI
- 10.1016/j.cub.2020.08.080
- ISSN
- 1879-0445
- PMID
- 32946751
- Organisation Unit
- University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99553807802621
- Output Type
- Journal article
Metrics
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