Semiochemical Regulation of the Intraspecific and Interspecific Behavior of Tomicus yunnanensis and Tomicus minor during the Shoot-Feeding Phase

Journal of Chemical Ecology
C X WuZhen Zhang

Abstract

Two pine shoot beetles, Tomicus yunnanensis and Tomicus minor, are the most destructive pests of Pinus yunnanensis in southwestern China. We investigated behavioral responses within and between these two species during the shoot-feeding phase using walking bioassays. We also identified the pheromonal aspects of beetles by static solid phase microextraction (SPME) and hindgut extraction following interactive communication by gas chromatography-mass spectroscopy (GC-MS). Both species were significantly attracted by their own species and the same sex, and attraction was inhibited by exposure to additional beetles or to the hindgut extracts of beetles which had shown interaction. Female and male T. minor and T. yunnanensis hindguts contained 0.19, 0.09, 0.22, and 0.05 ng/individual of (-)-trans-verbenol, respectively; following interaction with additional beetles, this increased to 16.74-292.71 ng/individual in T. minor females. Mean concentration of verbenone detected in the hindguts of female/male individuals of T. minor and T. yunnanensis under natural conditions were 0.16, 0.06, 0.03, and 0.05 ng/individual, respectively, but these correspondingly increased to 5.90, 2.43, 0.06, and 0.19 ng/individual after exposure to additiona...Continue Reading

References

Nov 13, 2004·Journal of Chemical Ecology·Emerson S LaceyLawrence M Hanks
Mar 19, 2009·Journal of Chemical Ecology·Daniel R Miller, Robert J Rabaglia
Dec 14, 2011·Journal of Chemical Ecology·Jiri HulcrLukasz L Stelinski
Nov 1, 1990·Journal of Chemical Ecology·J R Miller, R S Cowles

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Citations

Dec 15, 2020·Journal of Asian Natural Products Research·Fu LiuZhen Zhang

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Methods Mentioned

BETA
dissection

Software Mentioned

SPSS
SPME

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