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Exp Appl Acarol

Title:		"A key volatile infochemical that elicits a strong olfactory response of the predatory mite Neoseiulus californicus, an important natural enemy of the two-spotted spider mite Tetranychus urticae"
Author(s):		Shimoda T;
Address:		"National Agricultural Research Center, Tsukuba, Ibaraki, 305-8666, Japan. oligota@affrc.go.jp"
Journal Title:		Exp Appl Acarol
Year:		2010
Volume:		20090609
Issue:		1
Page Number:		9 - 22
DOI:		10.1007/s10493-009-9275-x
ISSN/ISBN:		1572-9702 (Electronic) 0168-8162 (Linking)
Abstract:		"Herbivore-induced plant volatiles (HIPVs) emitted from lima bean leaves infested with the two-spotted spider mites Tetranychus urticae strongly attract the predatory mites Neoseiulus californicus. Among these HIPVs, methyl salicylate and linalool can attract the predators. Three green-leaf volatiles (GLVs) of (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate and (E)-2-hexenal, found in the odor blends from T. urticae-infested leaves and physically damaged leaves, can also attract the predators. To search for a strong predator attractant, the olfactory responses of N. californicus to each synthetic compound or their combinations were investigated in a Y-tube olfactometer. When presented a choice between a mixture of the five compounds (i.e. the two HIPVs and the three GLVs) and T. urticae-infested leaves, N. californicus did not discriminate between these odor sources. The same trend was observed when either a mixture of the two HIPVs or methyl salicylate vs. T. urticae-infested leaves were compared. In contrast, the predators preferred T. urticae-infested leaves to linalool, each of the three GLVs, or a mixture of the three GLVs. These results indicated that methyl salicylate is a strong predator attractant, and its potential attractiveness almost equaled that of the blend of HIPVs from T. urticae-infested leaves"
Keywords:		"Animals Behavior, Animal/*drug effects Mites/*drug effects/physiology Phaseolus/*chemistry Plant Extracts/pharmacology Plant Leaves/chemistry Predatory Behavior/*drug effects Salicylates/*pharmacology Smell Tetranychidae/physiology Volatilization;"
Notes:		"MedlineShimoda, Takeshi eng Research Support, Non-U.S. Gov't Netherlands 2009/06/10 Exp Appl Acarol. 2010 Jan; 50(1):9-22. doi: 10.1007/s10493-009-9275-x. Epub 2009 Jun 9"