Dissertation/Thesis Abstract

Host tree and site characteristics influencing goldspotted oak borer, Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae), populations in southern California
by Singleton, Lauren, M.S., California State University, Long Beach, 2014, 84; 1527751
Abstract (Summary)

The goldspotted oak borer (GSOB), Agrilus auroguttatus Schaeffer, is an invasive wood-borer associated with tree mortality in San Diego County, California since 2008, and is believed to have been introduced via infested firewood from southeastern Arizona. From 2011-2013, I recorded GSOB emergence holes on Quercus agrifolia trees at eight locations within San Diego County. I evaluated the effectiveness of crown class and purple prism traps as tools to monitor GSOB populations. I also identified possible tree and site characteristics that could explain the variation in GSOB population densities. Crown class was useful in monitoring GSOB populations unlike purple prism traps. Larger trees (>50 cm diameter at breast height), trees located near a stand's edge, and trees previously infested had the greatest emergence hole densities. Sites closer to GSOB's putative original point of infestation and those with an intermediate Q. agrifolia density (30-50 trees per hectare) had greatest infestation levels.

Indexing (document details)
Advisor: Underwood, Dessie L. A.
School: California State University, Long Beach
Department: Biology
School Location: United States -- California
Source: MAI 52/06M(E), Masters Abstracts International
Subjects: Ecology, Entomology, Forestry
Keywords: Coast live oak, Forest ecology, Forest entomology, Goldspotted oak borer, Invasive species
Publication Number: 1527751
ISBN: 978-1-303-92607-5
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