Journal
FRONTIERS IN ECOLOGY AND EVOLUTION
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fevo.2018.00098
Keywords
cotton; kairomone; herbivore-induced plant volatiles; insect-plant interaction; semiochemicals
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Funding
- Coordination of Superior Level Staff Improvement (CAPES) [99999.014964/2013-09]
- National Council of Technological and Scientific Development (CNPq)
- Brazilian Corporation of Agricultural Research (EMBRAPA)
- Biotechnology and Biological Sciences Research Council (BBSRC) of the United Kingdom
- Federal District Research Foundation (FAP-DF)
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Phytophagous insects rely on plant volatiles to locate suitable hosts upon which to feed or oviposit. The boll weevil, Anthonomus grandis, is the main pest on cotton crops in the Neotropical region and is attracted to host plant volatiles, especially herbivore-induced volatiles from reproductive cotton. Behavioral and electrophysiological responses of the boll weevil were evaluated with the aim of identifying the compounds responsible for host location. Ten compounds elicited antennal responses from A. grandis, but only six were required to elicit a full behavioral response, namely: (R)-linalool, (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT), methyl salicylate, (E)-(1R,9S)-caryophyllene, geranylacetone and (E-E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT). A synthetic blend comprising these six compounds was as attractive as the sample of cotton reproductive stage volatiles. These data are discussed in the context of insect host location and crop protection.
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