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Title: Field response of Dendroctonus frontalis (Coleoptera: Scolytinae) to Synthetic Semiochemicals in Chiapas, Mexico.

Author: Moreno, Benjamin; Macias, Jorge; Sullivan, Brian T.; Clarke, Stephen R.;

Date: 2008

Source: Research Note RMRS-RN-10. Fort Collins, CO: USDA-Forest Service, Rocky Mountain Research Station. 6 p.

Publication Series: Scientific Journal (JRNL)

Description:

Dendroctonus frontalis Zimmermann (Coleoptera: Scolytinae) is the most serious pest of pines (Pinus spp.) in Mexico. Con specifics are attracted to trees undergoing colonization by the aggregation pheromone frontalin, which is synergized by odors of pine oleoresin released from beetle-damaged host tissue. Synthetic racemic frontalin combined with turpentine has been the operational bait used in traps for monitoring populations of DJrontalis in Mexico as well as the United States. Recently, racemic endo-brevicomin has been reported to be a synergist of the frontalinl turpentine bait and as an important component of the aggregation pheromone for D. frontalis populations in the United States. To determine whether racemic endo-brevicomin also might function as an aggregation synergist for the geographically isolated D. frontalis populations of Central America and Mexico, we performed a field trapping trial in Lagunas de Montebello National Park, Chiapas, Mexico, during July and August 2007. The combination of endo-brevicomin (placed either directly on the trap or 4 m away) plus racemic frontalin and turpentine caught at least 5 times more D. frontalis of both sexes than did turpentine either alone or in combination with either frontalin or endobrevicomin. The addition of endo-brevicomin to the frontalin/turpentine bait also increased the proportion of females trapped. We conclude that the addition of endo-brevicomin might substantially improve the efficiency of the frontalin/turpentine bait for monitoring of D. frontalis in Central America and Mexico. We discuss factors that reconcile our results with previous studies that reported endo-brevicomin to be an attractant antagonist for populations of DJrontalis in Mexico and Honduras.

Keywords: bark beetles, endo-brevicomin, monitoring, pheromone, attractant synergist

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Citation:


Moreno, Benjamin, Macias, Jorge, Sullivan, Brian T., Clarke, Stephen R. 2008. Field response of Dendroctonus frontalis (Coleoptera: Scolytinae) to Synthetic Semiochemicals in Chiapas, Mexico. J. Econ. Entomol. 101 (6):1821-1825.

 


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