Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (157 KB bytes)

Title: Measuring the Effective Sampling Area of a Pheromone Trap for Monitoring Population Density of Southern Pine Beetle (Coleoptera: Scolytidae)

Author: Turchin, Peter; Odendaal, Francois J.;

Date: 1996

Source: Environ. Entomol. 25(3): 582-588 (1996)

Publication Series: Miscellaneous Publication

Description: Multifunnel traps baited with frontalin and turpentine have been used to investigate dispersal of southern pine beetles, Dendroctonus front Zimmermann, and are routinely used in the southern United States to monitor population trends of this serious forest pest. However, there is no quantitative data on the effective sampling area of these traps that would allow us to convert numbers of beetlescaughtin a trap to their absolute population density (numbers per hectare). We conducted fieldstudies to determine the effective sampling area of the multifunnel trap. Using field releases of marked beetles, we estimated how the probability of capture declines with distance between the trap and the release point. The estimated relationship between the capture probability and distance is then translated into the effective sampling area. The effective sampling area for the multifunnel trap was estimated as ~0.1 ha. Our results also indicate that the capture efficiency of a trap declines with increased density of host trees around the trap. We discuss our findings in the context of previous studies that measured attraction to pheromone traps in other species of bark beetles and in the gypsy moth.

Keywords: bark beetles, gypsy moth, pheromone-baited traps, attraction, dispersal, population monitoring

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.
  • You may send email to to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)



Turchin, Peter; Odendaal, Francois J. 1996. Measuring the Effective Sampling Area of a Pheromone Trap for Monitoring Population Density of Southern Pine Beetle (Coleoptera: Scolytidae). Environ. Entomol. 25(3): 582-588 (1996)


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.