Local host-dependent persistence of the entomopathogenic nematode Steinernema carpocapsae used to control the large pine weevil Hylobius abietis

Harvey, Christopher D.; Griffin, Christine T.

doi:10.1007/s10526-015-9709-9

Cited by 13 publications

(14 citation statements)

References 40 publications

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“…Dillon et al's (2008a) study compared various species in a uniform setting (pine stumps on deep peat soil), while Harvey and Griffin (2015) monitored persistence of a single species (S. carpocapsae) under varied conditions: Llodgepole pine (Pinus contorta Douglas) and Sitka spruce stumps on peat (nearly pure organic matter) or mineral soil. Similar to the results obtained by Dillon et al (2008a), the percentage of soil cores with S. carpocapsae decreased significantly within the first two years after EPN application, from up to 12 % of cores after five months to 3 % after two years (Harvey & Griffin, 2016). Five years after application, only indigenous Steinernema spp.…”

Section: Risk Of Epn Application In Forest Ecosystem A) Establishmentsupporting

confidence: 84%

“…Five years after application, only indigenous Steinernema spp. were found around stumps (Harvey & Griffin, 2016). Similar results were obtained for stump bark: S. carpocapsae was found under the bark of up to 67 % of stumps one and two years after application, but was not detected there four or five years post application (Harvey & Griffin, 2016).…”

Section: Risk Of Epn Application In Forest Ecosystem A) Establishmentsupporting

confidence: 78%

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Inundative pest control: How risky is it? A case study using entomopathogenic nematodes in a forest ecosystem

Harvey

Williams

Dillon

et al. 2016

Forest Ecology and Management

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Entomopathogenic nematodes (EPN) are globally important inundative biological control agents.Their widespread use makes environmental risk assessment important, but very few comprehensive post-application risk assessments have been conducted for EPN. We apply a rigorous risk analysis procedure to the use of EPN applied in a forest ecosystem to suppress the large pine weevil (Hylobius abietis). In this synthesis, we provide a quantitative evaluation of five risk categories: a) establishment, b) dispersal, c) host range, d) direct non-target effects and e) indirect non-target effects. A low level of risk was identified (35 -51 out of a possible total of 125). Species exotic to the clear-fell forest ecosystem (Steinernema carpocapsae and Heterorhabditis downesi) were accorded a lower overall risk status than native species and strains (Steinernema feltiae), largely as a result of their shorter persistence in the target environment. We conclude that EPN are a low risk viable alternative control for pine weevil compared to the higher risk conventional control using pyrethroid insecticides.

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Section: Risk Of Epn Application In Forest Ecosystem A) Establishmentsupporting

confidence: 84%

Section: Risk Of Epn Application In Forest Ecosystem A) Establishmentsupporting

confidence: 78%

Inundative pest control: How risky is it? A case study using entomopathogenic nematodes in a forest ecosystem

Harvey

Williams

Dillon

et al. 2016

Forest Ecology and Management

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“…One hypothesis to explain why S. carpocapsae does better when applied to soil rather than at the top is that IJs that are carried into the space between the bark and wood may be encouraged to sit and wait there. S. carpocapsae was detected in this location up to two years postapplication, though this was assumed to include nematodes that had recycled in LPW (Harvey and Griffin, 2016). The host species with which S. carpocapsae has most frequently been associated is the codling moth, Cydia pomonella (Peters 1996).…”

Section: Discussionmentioning

confidence: 99%

Optimizing the application method of entomopathogenic nematode suspension for biological control of large pine weevil Hylobius abietis

et al. 2017

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Entomopathogenic nematodes (EPNs) are effective against the immature stages of the large pine weevil Hylobius abietis. In three field trials we compared the efficacy of the application method of EPN for weevil suppression below the suggested threshold of 20 weevils per stump: applying the EPN suspension in the top edges of the stumps ('top') vs. drenching the soil around stumps ('standard'). For Steinernema carpocapsae, weevil suppression was below the targeted threshold only when suspension was applied in the standard way (two of the three sites). On the other hand, weevil suppression was provided in all three cases of 'top' application of Heterorhabditis downesi suspension, whereas suppression in 'standard' application was observed in one site. Percentage parasitism of developing weevils in relation to depth and distance help explain EPN movement post-application. Weevil suppression relative to suggested thresholds can be improved by altering the method of EPN application depending on the nematode species.

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“…Safety may also be examined in terms of persistence of EPNs in the treated area. In a field experiment, S. carpocapsae was detected in the soil up to two years after application, but not after four years, and its presence was positively correlated with that of its large pine weevil host [ 165 ], an optimistic result regarding potential environmental risk.…”

Section: Interaction With the Biotic And Abiotic Environmentmentioning

confidence: 99%

Transmission Success of Entomopathogenic Nematodes Used in Pest Control

Labaude

Griffin

2018

Insects

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Entomopathogenic nematodes from the two genera Steinernema and Heterorhabditis are widely used as biological agents against various insect pests and represent a promising alternative to replace pesticides. Efficacy and biocontrol success can be enhanced through improved understanding of their biology and ecology. Many endogenous and environmental factors influence the survival of nematodes following application, as well as their transmission success to the target species. The aim of this paper is to give an overview of the major topics currently considered to affect transmission success of these biological control agents, including interactions with insects, plants and other members of the soil biota including conspecifics.

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Local host-dependent persistence of the entomopathogenic nematode Steinernema carpocapsae used to control the large pine weevil Hylobius abietis

Cited by 13 publications

References 40 publications

Inundative pest control: How risky is it? A case study using entomopathogenic nematodes in a forest ecosystem

Inundative pest control: How risky is it? A case study using entomopathogenic nematodes in a forest ecosystem

Optimizing the application method of entomopathogenic nematode suspension for biological control of large pine weevil Hylobius abietis

Transmission Success of Entomopathogenic Nematodes Used in Pest Control

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