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Environ Entomol

Title:		"Behavioral and Electroantennographic Responses of Adults of Guava Weevil, Conotrachelus dimidiatus (Coleoptera: Curculionidae), to Synthetic Host-Associated and Conspecific Volatiles"
Author(s):		Garcia-Diaz E; Tafoya F; Elizalde-Gonzalez MP;
Address:		"Centro de Quimica, Instituto de Ciencias, Benemerita Universidad Autonoma de Puebla, Puebla, Pue., Mexico. Departamento de Biologia, Centro Basico, Universidad Autonoma de Aguascalientes, Ags. Mexico"
Journal Title:		Environ Entomol
Year:		2020
Volume:		49
Issue:		4
Page Number:		810 - 814
DOI:		10.1093/ee/nvaa058
ISSN/ISBN:		1938-2936 (Electronic) 0046-225X (Linking)
Abstract:		"Immature guava fruits (Psidium guajava L.) of commercial orchards in Mexico are affected by adults of Conotrachelus dimidiatus (Champion) causing economic losses to producers. The aim of this study was to assess the behavioral and electrophysiological responses of the weevil to selected semiochemicals emitted by the host plant fruit and to conspecifics. Volatile organic compounds isolated from host plant as beta-caryophyllene, (S)-(-)-limonene, hexanal, and nonanal significantly attracted adults of both sexes in behavioral bioassays. Electroantennogram recordings showed largest responses to papayanal and grandlure III + IV released by C. dimidiatus and C. nenuphar, respectively. Our results indicate that behavioral and electroantennographic assays using synthetic compounds from host plant volatiles and insect volatile pheromones produce olfactometry and electroantennographic responses in C. dimidiatus. This is the first report of intraspecific chemical communication in this weevil. We discuss the significance of these responses for the natural behavior in guava orchards and their potential use in a pest management strategy"
Keywords:		Animals *Coleoptera Female Male Mexico *Psidium *Volatile Organic Compounds *Weevils Psidium guajava behavioral bioassay electroantennography;
Notes:		"MedlineGarcia-Diaz, Esmeralda Tafoya, Felipe Elizalde-Gonzalez, Maria P eng Research Support, Non-U.S. Gov't England 2020/06/10 Environ Entomol. 2020 Aug 20; 49(4):810-814. doi: 10.1093/ee/nvaa058"