Journal article
Preliminary study on the differences in hydrocarbons between phosphine-susceptible and -resistant strains of Rhyzopertha dominica (Fabricius) and Tribolium castaneum (Herbst) using direct immersion solid-phase microextraction coupled with GC-MS
Molecules, Vol.25(7), Article 1565
2020
Abstract
Phosphine resistance is a worldwide issue threatening the grain industry. The cuticles of insects are covered with a layer of lipids, which protect insect bodies from the harmful effects of pesticides. The main components of the cuticular lipids are hydrocarbon compounds. In this research, phosphine-resistant and -susceptible strains of two main stored-grain insects, T. castaneum and R. dominica, were tested to determine the possible role of their cuticular hydrocarbons in phosphine resistance. Direct immersion solid-phase microextraction followed by gas chromatography-mass spectrometry (GC-MS) was applied to extract and analyze the cuticular hydrocarbons. The results showed significant differences between the resistant and susceptible strains regarding the cuticular hydrocarbons that were investigated. The resistant insects of both species contained higher amounts than the susceptible insects for the majority of the hydrocarbons, sixteen from cuticular extraction and nineteen from the homogenized body extraction for T. castaneum and eighteen from cuticular extraction and twenty-one from the homogenized body extraction for R. dominica. 3-methylnonacosane and 2-methylheptacosane had the highest significant difference between the susceptible and resistant strains of T. castaneum from the cuticle and the homogenized body, respectively. Unknown5 from the cuticle and 3-methylhentriacontane from the homogenized body recorded the highest significant differences in R. dominica. The higher hydrocarbon content is a key factor in eliminating phosphine from entering resistant insect bodies, acting as a barrier between insects and the surrounding phosphine environment.
Details
- Title
- Preliminary study on the differences in hydrocarbons between phosphine-susceptible and -resistant strains of Rhyzopertha dominica (Fabricius) and Tribolium castaneum (Herbst) using direct immersion solid-phase microextraction coupled with GC-MS
- Authors/Creators
- I. Alnajim (Author/Creator)M. Agarwal (Author/Creator)T. Liu (Author/Creator)B. Li (Author/Creator)X. Du (Author/Creator)Y. Ren (Author/Creator)
- Publication Details
- Molecules, Vol.25(7), Article 1565
- Publisher
- MDPI
- Identifiers
- 991005543339807891
- Copyright
- © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
- Murdoch Affiliation
- College of Science, Health, Engineering and Education
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.32 Entomology
- 3.32.1138 Botanical Insecticides
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Chemistry, Multidisciplinary
- ESI research areas
- Chemistry