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J Chem Ecol

Title:		A Phagostimulant Blend for the Asian Citrus Psyllid
Author(s):		Lapointe SL; Hall DG; George J;
Address:		"Subtropical Insects and Horticulture Research Unit, USDA-ARS, United States Horticultural Research Laboratory, 2001 South Rock Rd., Fort Pierce, Florida, 34945, USA. Stephen.Lapointe@ars.usda.gov. Subtropical Insects and Horticulture Research Unit, USDA-ARS, United States Horticultural Research Laboratory, 2001 South Rock Rd., Fort Pierce, Florida, 34945, USA"
Journal Title:		J Chem Ecol
Year:		2016
Volume:		20160819
Issue:		9
Page Number:		941 - 951
DOI:		10.1007/s10886-016-0745-4
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"Chemical cues that elicit orientation by the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae), are of interest because it is the primary vector of the causal pathogen of citrus greening disease. Non-pesticidal control methods for D. citri remain a high priority for the citrus industry. While searching for semiochemicals that may be involved in orientation to host plants, we previously identified a blend of formic and acetic acids that stimulated substrate probing by D. citri. Here, we applied geometric mixture designs and response surface modeling to identify and optimize a 3-component blend that further increased the number of salivary sheaths produced by D. citri on a wax substrate containing a 3.5:1.6:1 blend of formic acid, acetic acid, and p-cymene, respectively. No evidence was found for remote orientation by D. citri adults through olfaction to the phagostimulant blends. Increased probing in response to the presence of phagostimulants in the wax matrix occurred after contact with the substrate. Yellow wax beads always attracted more D. citri adults and received more probes compared with white wax beads. Yellow beads containing the 3-component blend of phagostimulants were probed by D. citri 2 to 3 times more often compared with yellow beads alone. The phagostimulant effect also was tested by covering wax beads containing the 3-component blend with a plastic film to minimize olfaction or contact chemoreception by antennation. The plastic film did not affect the probing response, thus suggesting that chemosensation was associated with mouthparts and not olfactory receptors. Salivary sheaths produced in wax beads containing the phagostimulant blend were 4.5 times longer than sheaths produced in beads without tastants. This phenomenon might be used to improve a trap, design an attract-and-kill product, or enhance other means of managing D. citri and citrus greening disease"
Keywords:		"Acetic Acid/analysis/*metabolism Animals Behavior, Animal Citrus/*parasitology Cymenes Female Formates/analysis/*metabolism Hemiptera/*physiology *Insect Control/methods Male Monoterpenes/analysis/*metabolism Odorants/analysis Plant Diseases/*parasitology;"
Notes:		"MedlineLapointe, Stephen L Hall, David G George, Justin eng 2016/08/20 J Chem Ecol. 2016 Sep; 42(9):941-951. doi: 10.1007/s10886-016-0745-4. Epub 2016 Aug 19"