Forest stand composition and impacts associated with Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae) and Agrilus coxalis Waterhouse in oak woodlands

Coleman, Tom W.; Graves, Andrew D.; Hoddle, Mark S.; Heath, Zachary; Chen, Yigen; Flint, Mary Louise; Seybold, Steven J.

doi:10.1016/j.foreco.2012.03.011

Cited by 33 publications

(53 citation statements)

References 37 publications

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“…This woodborer was initially detected in San Diego County, California, in 2004(Westcott, 2005 and was likely transported unintentionally into the area in infested oak firewood . A. auroguttatus is indigenous to southern Arizona, USA, where it has been observed at low densities colonising stressed or weakened Emory oak (Quercus emoryi Torrey) and silverleaf oak (Quercus hypoleucoides A. Camus) and is not considered a pest Coleman et al, 2012). In southern California, A. auroguttatus aggressively attacks coast live oak (Quercus agrifolia Nèe), California black oak (Quercus kelloggii Newberry) and canyon live oak (Quercus chrysolepis Liebmann) and has killed approximately 25,000 trees through larval feeding, primarily at the interface of the phloem and xylem USDA FHM, 2013).…”

Section: Introductionmentioning

confidence: 99%

Native and introduced range surveys for egg parasitoids ofAgrilus auroguttatus, an invasive pest of native oaks in California

Lopez

Hoddle

2015

Biocontrol Science and Technology

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The invasive goldspotted oak borer, Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae), has caused extensive mortality to indigenous oaks in southern California. This woodborer is native to southern Arizona where low population densities may, in part, be due to the presence of co-evolved natural enemies. Surveys were conducted in Arizona and California from June to August 2013 by deploying sentinel egg masses in an attempt to attract, collect and identify potential egg parasitoids of this beetle that could be used for a classical biological control programme in California. In total, 18,052 A. auroguttatus eggs were deployed throughout the native and introduced range. Parasitoids did not attack any eggs deployed in Arizona or California. The inability to detect egg parasitoids could be explained by the following: (1) host-specific egg parasitoids of A. auroguttatus do not exist, (2) surveying time did not coincide with peak activity of egg parasitoids or (3) surveying methods were insufficient at detecting egg parasitoids.

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Section: Introductionmentioning

confidence: 99%

Native and introduced range surveys for egg parasitoids ofAgrilus auroguttatus, an invasive pest of native oaks in California

Lopez

Hoddle

2015

Biocontrol Science and Technology

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“…), and canyon live oak (Quercus chrysolepis Liebm.) have been killed because of larval feeding damage to the phloem/xylem interface (Coleman et al 2012a, USDA-FS-FHM 2013.…”

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Assessing the Flight Capabilities of the Goldspotted Oak Borer (Coleoptera: Buprestidae) With Computerized Flight Mills

et al. 2014

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The goldspotted oak borer, Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae), is native to southern Arizona and is an invasive wood-boring beetle that has caused considerable mortality to native oak species in southern California. Assessing the dispersal capabilities of this woodborer may help to determine its potential environmental and economic risk within the invaded region, and possibly assist with the development of species-specific management strategies. The flight performance of A. auroguttatus adults under different age, mating, and nutritional status was assessed by tethering individuals to computerized flight mills for a 24-h trial period to collect information on total distance flown, flight times and velocities, number and duration of flight bouts, and postflight weight. The nutritional status and body size (i.e., elytron length) of A. auroguttatus adults had a significant influence on overall flight performance. Mating status and gender had no significant influence on total flight distance, duration, velocity, and flight bout time. Significant interactions between nutritional status and age were observed in the overall flight performance of A. auroguttatus, with decreased flight activity in old (approximately 6 d of age) starved individuals during a 24-h trial period. Overall, results of these flight mill assays indicate that A. auroguttatus is unable to disperse long distances across habitats that lack suitable oak hosts. This work supports the hypothesis that human-aided transportation via infested oak firewood from southern Arizona across the Sonoran desert likely caused the initial introduction, and subsequent satellite infestations of A. auroguttatus within southern California's native oak woodlands.

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“…Since its introduction, the goldspotted oak borer has killed tens of thousands of oak trees in and adjacent to the Descanso Ranger District, Cleveland National Forest (CNF), Cuyamaca Rancho State Park, and several communities in San Diego Co. (Coleman and Seybold 2008a,b;Coleman et al 2012b). Elevated levels of oak mortality have continued since 2002, covering an estimated 213,000 ha (USDA Forest Health Monitoring [FHM] 2011).…”

mentioning

confidence: 99%

“…However, two known satellite infestation were detected in 2009 in urban San Diego and 2012 in Riverside Co., CA which are hypothesized to have resulted from the movement of infested cut wood . Several native species of oaks in California are being killed by the goldspotted oak borer, but large diameter coast live oak, Quercus agrifolia Né e, and California black oak, Q. kelloggii Newberry, are the preferred hosts (Coleman et al 2012b).…”

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confidence: 99%

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Sanitation Options for Managing Oak Wood Infested With the Invasive Goldspotted Oak Borer (Coleoptera: Buprestidae) in Southern California

Jones

Coleman²,

Graves

et al. 2013

jnl. econ. entom.

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Movement of invasive wood-boring insects in wood products presents a threat to forest health and a management challenge for public and private land managers. The goldspotted oak borer, Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae), is a new pest in San Diego and Riverside Cos., CA, believed to have been introduced on firewood. This beetle has caused elevated levels of oak mortality since 2002. From 2009-2011, we tested several sanitation methods, applicable to large and small land parcels, to reduce or prevent goldspotted oak borer emergence from infested oak wood. In most experiments, emergence of goldspotted oak borer adults from the positive controls demonstrated that the beetle could complete development in firewood-sized pieces of cut oak wood. In 2009, adult emergence from sun-exposed oak wood began and peaked 2- to 4-wks earlier at a low elevation site than at a high elevation site (late May to late June). However, there were no significant effects of elevation or host species on the emergence response of goldspotted oak borer by solarization treatment in this study. Solarization of infested wood with thick (6 mil) and thin (1 mil) plastic tarpaulins (tarps) did not significantly reduce emergence of adults despite recordings of greater mean and maximum daily temperatures in both tarped treatments and greater relative humidity in the thick-tarped treatment (all compared with nontarped controls). Grinding wood with a 3"-minus screen (< or = 7.6 cm) significantly reduced goldspotted oak borer emergence compared with control treatments, and this was the best method for reducing adult emergence among those tested. In a separate grinding study, no adults emerged when wood was ground to 9"-minus (22.9 cm), 2"-minus (5.1 cm), or 1"-minus (2.5 cm) screen sizes, but a low level of adult emergence from the positive controls limited any inferences from this experiment. Debarking cut wood pieces eliminated goldspotted oak borer emergence from the wood fraction, but adults emerged from the shaved bark and phloem.

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Forest stand composition and impacts associated with Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae) and Agrilus coxalis Waterhouse in oak woodlands

Cited by 33 publications

References 37 publications

Native and introduced range surveys for egg parasitoids ofAgrilus auroguttatus, an invasive pest of native oaks in California

Native and introduced range surveys for egg parasitoids ofAgrilus auroguttatus, an invasive pest of native oaks in California

Assessing the Flight Capabilities of the Goldspotted Oak Borer (Coleoptera: Buprestidae) With Computerized Flight Mills

Sanitation Options for Managing Oak Wood Infested With the Invasive Goldspotted Oak Borer (Coleoptera: Buprestidae) in Southern California

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