Natural enemies implicated in the regulation of an invasive pest: a life table analysis of the population dynamics of the emerald ash borer

Duan, Jian J.; Abell, Kristopher J.; Bauer, Leah S.; Gould, Juli R.; Driesche, Roy Van

doi:10.1111/afe.12070

Cited by 64 publications

(71 citation statements)

References 32 publications

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“…, Duan et al. , Herms and McCullough ). In the case of MPB, similarities in ecosystem processes and trophic interactions in the native and newly invaded lodgepole pine forests (Cudmore et al.…”

Section: Discussionmentioning

confidence: 99%

Consequences of distributional asymmetry in a warming environment: invasion of novel forests by the mountain pine beetle

2017

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Abstract. The range of many Holarctic forest insects does not comprise the entire range of their hosts, as they are often limited to more southern latitudes by the adverse effects of cold temperatures. Global climate warming has led to the increased potential for forest insects to invade novel habitats of native hosts within the same landmass. The mountain pine beetle (MPB; Dendroctonus ponderosae) has recently expanded into higher-latitude forests of the principal host, lodgepole pine (Pinus contorta var. latifolia), and the susceptibility of trees is greater in these systems compared to forests in the native range. We assessed the contribution of the induced defensive response of hosts to this elevated susceptibility, and whether these discrepancies are the result of coevolution with host populations within the historic native range of the insect. We challenged trees using paired treatments of a beetle-attack simulation and a generic defensive response elicitor (methyl jasmonate) to mitigate variability in the induced response among trees within and among populations, from within and outside the historic range of the beetle. We then assessed the production of monoterpene chemicals by the trees in response to treatments using gas chromatography/mass spectrometry. The differential induction of monoterpenes in response to simulated beetle attack relative to the generic elicitor was highest in populations with the highest putative historic exposure to MPB. Elevated susceptibility and invasion potential of the beetle in novel systems is the proximate result of reduced defensive capacity, ultimately arising from a lack of coevolution with the beetle in novel systems. In forested systems with climate-driven herbivore-host distributional asymmetry, continued warming will potentially exacerbate the impacts of aggressive insect herbivores as they invade defensively na€ ıve host populations.

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Section: Discussionmentioning

confidence: 99%

Consequences of distributional asymmetry in a warming environment: invasion of novel forests by the mountain pine beetle

2017

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“…Three emerald ash borer parasitoids from China were first released in Michigan, USA, in 2007 as part of a classical biological control program (Bauer et al 2007(Bauer et al , 2008(Bauer et al , 2015aUSDA APHIS 2007): 2 gregarious larval parasitoid species -Tetrastichus planipennisi Yang (Hymenoptera: Eulophidae) (Liu et al 2003;Yang et al 2005) and Spathius agrili Yang (Hymenoptera: Braconidae) (Liu et al 2003;Yang et al 2006) -and 1 egg parasitoid species, Oobius agrili Zhang and Huang (Hymenoptera: Encyrtidae) (Zhang et al 2005). Since their introduction, efforts have been made to determine establishment and prevalence of these parasitoids (Duan et al 2011(Duan et al , 2012a(Duan et al , 2012b(Duan et al , 2013a(Duan et al , 2014a(Duan et al , 2015Abell et al 2014). Although the phenology of the native parasitoid Atanycolus cappaerti Marsh & Strazanac (Hymenoptera: Braconidae) attacking emerald ash borer has been described (Cappaert & McCullough 2009), no work to date has described the flight phenology of these parasitoids.…”

Section: Introductionmentioning

confidence: 99%

Factors Affecting the Flight Capacity of <I>Tetrastichus planipennisi</I> (Hymenoptera: Eulophidae), a Classical Biological Control Agent of <I>Agrilus planipennis</I> (Coleoptera: Buprestidae)

Fahrner¹,

Lelito²,

Blaedow³

et al. 2014

environ entomol

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“…More recent life table analyses after seven years of data collection from these six study sites revealed that T. planipennisi contributed significantly to the reduction of net EAB population growth rates approximately four years after its initial release [96]. Moreover, with additional larval mortality from local natural enemies of wood boring insects, such as woodpeckers and native parasitoids (primarily braconids in the genus Atanycolus) [97], the resource-adjusted EAB larval density (per m 2 of live phloem tissues) declined~90% in infested ash trees at both the release and control plots between 2009 and 2014 [96,98]. The decline in the resource-adjusted EAB density may also be attributed in part to the general collapse of EAB populations following widespread mortality of the overstory ash trees.…”

Section: Impact Of Eab Biocontrol Agents On Target Pest Populationsmentioning

confidence: 99%

Progress and Challenges of Protecting North American Ash Trees from the Emerald Ash Borer Using Biological Control

Duan

Bauer

Driesche

et al. 2018

Forests

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After emerald ash borer (EAB), Agrilus planipennis Fairmaire, was discovered in the United States, a classical biological control program was initiated against this destructive pest of ash trees (Fraxinus spp.). This biocontrol program began in 2007 after federal regulatory agencies and the state of Michigan approved release of three EAB parasitoid species from China: Tetrastichus planipennisi Yang (Eulophidae), Spathius agrili Yang (Braconidae), and Oobius agrili Zhang and Huang (Encyrtidae). A fourth EAB parasitoid, Spathius galinae Belokobylskij (Braconidae) from Russia, was approved for release in 2015. We review the rationale and ecological premises of the EAB biocontrol program, and then report on progress in North American ash recovery in southern Michigan, where the parasitoids were first released. We also identify challenges to conserving native Fraxinus using biocontrol in the aftermath of the EAB invasion, and provide suggestions for program improvements as EAB spreads throughout North America. We conclude that more work is needed to: (1) evaluate the establishment and impact of biocontrol agents in different climate zones; (2) determine the combined effect of EAB biocontrol and host plant resistance or tolerance on the regeneration of North American ash species; and (3) expand foreign exploration for EAB natural enemies throughout Asia.

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Natural enemies implicated in the regulation of an invasive pest: a life table analysis of the population dynamics of the emerald ash borer

Cited by 64 publications

References 32 publications

Consequences of distributional asymmetry in a warming environment: invasion of novel forests by the mountain pine beetle

Consequences of distributional asymmetry in a warming environment: invasion of novel forests by the mountain pine beetle

Factors Affecting the Flight Capacity of <I>Tetrastichus planipennisi</I> (Hymenoptera: Eulophidae), a Classical Biological Control Agent of <I>Agrilus planipennis</I> (Coleoptera: Buprestidae)

Progress and Challenges of Protecting North American Ash Trees from the Emerald Ash Borer Using Biological Control

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