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1 October 2012 Identification and Field Bioassay of the Sex Pheromone of Trichophysetis cretacea (Lepidoptera: Crambidae)
Cheng-Lin Peng, Ping Gu, Juan Li, Qi-Yu Chen, Chuang-Hong Feng, Huai-Hai Luo, Yong-Jun Du
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Abstract

The jasmine bud borer Trichophysetis cretacea (Butler) (Lepidoptera: Crambidae) is an important agricultural pest of jasmine flowers Jasminum sambac in China. The extract from the pheromone gland of the female moth was analyzed by gas chromatography coupled to mass spectroscopy (GC-MS). (Z)-11-hexadecenylacetate (Z11–16:Ac), (Z)-11-hexadecenal (Z11–16:Ald),and (Z)-11-hexadecenol (Z11–16:OH) were identified as the probable sex pheromone components. The electroantennogram (EAG) bioassay confirmed the results from the chemical analysis. Field bioassays conducted in the late summer and fall in Quanwei, Sichuan, China, showed that the synthetic chemical blend of Z11–16:Ac, Z11–16:Ald, and Z11–16:OH was highly attractive to male T. cretacea moths, and none of the three components was attractive by itself. All three components were necessary and the ratio of the three was critical. The highest number of male moths was captured when the ratio of Z11–16:Ac: Z11–16:Ald:ZH-16:OH was 10:10:1 at a dosage per lure of 200 µg Z11–16:Ac. The binary mixture of 200 µg Z11–16:Ac and 25 µg Z11–16:OH captured a number of Nymphicula mesorphna (10.3 ± 4.4). The results indicate that traps with synthetic pheromone lures can be used to monitor jasmine bud borer populations in the field and potentially to control this pest.

© 2012 Entomological Society of America
Cheng-Lin Peng, Ping Gu, Juan Li, Qi-Yu Chen, Chuang-Hong Feng, Huai-Hai Luo, and Yong-Jun Du "Identification and Field Bioassay of the Sex Pheromone of Trichophysetis cretacea (Lepidoptera: Crambidae)," Journal of Economic Entomology 105(5), 1566-1572, (1 October 2012). https://doi.org/10.1603/EC12005
Received: 4 January 2012; Accepted: 1 June 2012; Published: 1 October 2012
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KEYWORDS
(Z)-11-hexadecenal
(Z)-11-hexadecenol
(Z)-11-hexadecenyl acetate
sex pheromone
Trichophysetis cretacea
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