Fumigant, contact, and repellent activities of essential oils against the darkling beetle, Alphitobius diaperinus.
The fumigant, contact, and repellent activities of four essential oils extracted from Citrus limonum (Sapindales: Rutaceae), Litsea cubeba (Laurales: Lauraceae), Cinnamomum cassia, and Allium sativum L. (Asparagales: Alliaceae) against 6th instars and adults of the darkling beetle, Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae), one of the main pests of materials and products of Juncus effuses L. (Poales: Juncaceae) during the storage period, were assayed, and chemical ingredients were analyzed with gas chromatography-mass spectrometry in this study. While the major ingredients found in C. limonum and C. cassia were limonene and (E)-cinnamaldehyde, the main constituents of L. cubea were D-limonene, (E)-3,7-dimethyl-,2,6-octadienal, (Z)-3,7-dimethyl,2 ,6-octadienal, and diallyl disulphide (18.20%), while the main constituents of and A. sativum were di-2-propenyl trisulfide and di-2-propenyl tetrasulfide. The fumigation activities of A. sativum and C. limonum on A. diaperinus adults were better than those of the other two essential oilss. The toxicities of A. sativum and C. limonum were almost equitoxic at 96 hr after treatment. Essential oils from Allium sativum and L. cubeba also showed good contact activities from 24 hr to 48 hr, and toxicities were almost equitoxic 48 hr posttreatment. The repellent activities of A. sativum and L. cubeba oils on 6th instars were also observed, showing repellence indexes of 90.4% and 88.9% at 12 hr after treatment, respectively. The effects of A. sativum on AChE activity of 6th instars of A. diaperinus were strongest compared to the other essential oils, followed by C. limonum, L. cubeba, and C. cassia. These results suggest that the essential oils of C. limonum and A. sativum could serve as effective control agents of A. diaperinus.
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China wanderwxg@sicau.edu.cn wanderwxg76@126.com.
Xuegui
X
Wang
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China 610221606@qq.com.
Qian
Q
Li
Sichuan Agricultural University, College of Resources and Environment, 611130, Chengdu, China shen-litao@163.com.
Litao
L
Shen
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China yjzgxy@126.com.
Jizhi
J
Yang
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China chenhuabao12@163.com.
Huabao
H
Cheng
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China jiangsr2006@sohu.com.
Surong
S
Jiang
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China 112159961@qq.com.
Chunxian
C
Jiang
Sichuan Agricultural University, Biorational Pesticide Research Lab, 611130, Chengdu, China wanghaijian@sicau.edu.cn.
Haijian
H
Wang
D000818:Animals; D002800:Cholinesterase Inhibitors / Q000032:analysis; D032904:Cinnamomum aromaticum / Q000737:chemistry; D002957:Citrus / Q000737:chemistry; D001517:Coleoptera; D005651:Fumigation; D005737:Garlic / Q000737:chemistry; D007302:Insect Repellents / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D032862:Litsea / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D018675:Toxicity Tests
D002800:Cholinesterase Inhibitors; D007302:Insect Repellents; D007306:Insecticides; D009822:Oils, Volatile
AChE activity; fumigant toxicity; repellent toxicity