Attraction of Culex pipiens pallens (Diptera: Culicidae) to Floret Volatiles and Synthetic Blends of Its Nectar Host Plant Abelia chinensis (Rubiales: Caprifoliaceae)

Abelia chinensis R. Br. (Dipsacales: Caprifoliaceae) is one of the preferred nectar host plants for Culex pipiens pallens Coquillett (Diptera: Culicidae). However, the volatile compounds of its flowers that might be involved in directing mosquitoes' orientation to its nectaries remain unknown....

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Bibliographic Details
Published in:Journal of medical entomology 2019-01, Vol.56 (1), p.29-34
Main Authors: Yu, Bao-Ting, Ding, Yan-Mei, Hu, Yin, Tian, Jia-Xin, Song, Xiao-Gang, Li, Zu-Guang, Mo, Jian-Chu
Format: Article
Language:English
Subjects:
Abelia
Allelochemicals
Animals
Appetitive Behavior
Aromatic compounds
attractant
Attractants
Attraction
BEHAVIOR, CHEMICAL ECOLOGY
Bioassays
Caprifoliaceae
Caprifoliaceae - chemistry
Culex
Culex pipiens pallens
Culicidae
Diptera
Female
Flowers
Flowers - chemistry
Gas chromatography
host plant
Host plants
Mass spectrometry
Mass spectroscopy
Mixtures
mosquito
Mosquitoes
Nectar
Pentane
Pheromones - analysis
Phytochemicals
Polycyclic Sesquiterpenes - analysis
Solid phase methods
Solid phases
volatile compound
Volatile compounds
Volatile Organic Compounds - analysis
Volatiles
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Summary:Abelia chinensis R. Br. (Dipsacales: Caprifoliaceae) is one of the preferred nectar host plants for Culex pipiens pallens Coquillett (Diptera: Culicidae). However, the volatile compounds of its flowers that might be involved in directing mosquitoes' orientation to its nectaries remain unknown. In the present study, the volatile compounds released by A. chinensis florets were collected by solid phase microextraction fiber and analyzed by gas chromatography-mass spectrometry system. Based on the major component species in the volatile profile, a synthetic phytochemical blend (Blend B, composed of six compounds at their most attractive concentrations) was formulated, and its attractiveness was tested against the pentane extract of A. chinensis florets at most attractive concentration (Blend A) and a formerly developed synthetic phytochemical blend (Blend C) in the olfactometer, respectively. The results revealed that the volatile profile of A. chinensis florets was mainly composed of aromatic compounds, most of which had been reported to be attractive to other mosquito species. The synthetic Blend B was as attractive as Blend A (10-1-fold of the crude pentane extract) in the olfactometer bioassays, but they were not as attractive as the formerly developed Blend C. The present study indicated that quantitative and qualitative differences in the constituents of phytochemical blends could significantly affect their attractiveness to Cx. pipiens pallens, and the capture efficiency of phytochemical attractants deserves further research before being applied in the field.
ISSN:0022-2585
1938-2928
DOI:10.1093/jme/tjy161