Journal article
Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique
Pest Management Science, Vol.76(1), pp.314-323
2020
Abstract
BACKGROUND
Synthetic amorphous silica (SAS) is safe for human consumption. SAS damages insect cuticles. Qualitative measurement of cuticle properties of insects affected by SAS is essential to understand the mode of action and develop new pesticides. A hyperspectral reflectance imaging approach was used to directly indicate the impact of SAS on the insect cuticle.
RESULTS
There were significant differences in the LT95 values of hydrophobic and hydrophilic SAS against Tribolium castaneum and Sitophilus oryzae (P < 0.01). T. castaneum was more susceptible to hydrophobic SAS while no difference was found for S. oryzae exposed to both SAS types. In a hyperspectral study, the ventral reflectance of control groups was higher than that of SAS‐treated groups in both visible and short‐wave near‐infrared wavelength ranges. The SAS‐treated groups showed much higher dorsal reflectance. The differences in absorption characteristics of cuticular fat and protein may contribute to the varied performance. The effects of both SASs on insect cuticles was significant, as the 100% recognition rate of the back propagation neural network models suggested. Consistent with the assumption that the efficacy was different between the two SAS types, the lowest rates of the model for two treatment groups were 62.2 and 73.3% in the target and output class.
CONCLUSION
The efficacy varied considerably between the two insect species and the two SASs. Hyperspectral image analyzing coupled with back propagation artificial neural network accurately recorded how SAS impacts the insect cuticle via the effective wavelengths. These findings showed that SAS is a promising candidate for new pesticide products.
Details
- Title
- Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique
- Authors/Creators
- Y. Li (Author/Creator) - Murdoch UniversityM. Agarwal (Author/Creator) - Murdoch UniversityY. Cao (Author/Creator) - Academy of State Administration of GrainY. Ren (Author/Creator) - Murdoch University
- Publication Details
- Pest Management Science, Vol.76(1), pp.314-323
- Publisher
- Wiley
- Identifiers
- 991005543674207891
- Copyright
- © 2019 Society of Chemical Industry
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.32 Entomology
- 3.32.1138 Botanical Insecticides
- Web Of Science research areas
- Agronomy
- Entomology
- ESI research areas
- Agricultural Sciences