Date of Award:
5-1997
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Wildland Resources
Department name when degree awarded
Forest Resources
Committee Chair(s)
Michael J. Jenkins
Committee
Michael J. Jenkins
Committee
Jesse Logan
Committee
Jay B. Karren
Abstract
Two field experiments determined an effective intertrap distance (ITD) for early detection and delimitation sparse gypsy moth (Lepidoptera: Lymantriidae, Lymantria dispar L.) populations in mountainous terrain. This study found that current Animal and Plant Health Inspection Service trapping guidelines are not sufficient for early detection of small gypsy moth populations in mountainous terrain. Detection trapping in mountainous terrain should have an ITD of not more than 804 m. Delimiting trapping should use a grid design with an ITD of 152 m.
A related study determined natural adult male mortality in the climate of the intermountain West, which includes Utah, Nevada, western Wyoming, and southern Idaho. An interaction was found between mortality, temperature, and humidity. During high temperatures, most mortality occurred on the second day. When lower temperatures prevailed, the largest percent mortality occurred on the third or fourth day.
Checksum
a0ddacdf067df28d9b16b90dc79085d6
Recommended Citation
Keyes, Colleen, "Effectiveness of Grid Systems for Pheromone-Trapping Sparse Gypsy Moth Populations in Mountainous Terrain in the Intermountain West" (1997). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 7266.
https://digitalcommons.usu.edu/etd/7266
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