Parasitoids, Predators, Nematodes and Pathogens Associated with Bark Weevil Pests

Kenis, Marc; Wegensteiner, R.; Griffin, Christine T.

doi:10.1007/978-1-4020-2241-8_18

Cited by 14 publications

(24 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternative approaches for mitigating the eVects of H. abietis (reviewed by Langstrom and Day, 2004) include physical protection of seedlings using collars and waxes, an approach that has received much attention in Sweden, and sylvicultural measures such as the provision of shelter trees and alternative food. Of the possible biological control agents that might be deployed against H. abietis, entomopathogenic nematodes are the most promising (Kenis et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Suppression of the large pine weevil Hylobius abietis (L.) (Coleoptera: Curculionidae) in pine stumps by entomopathogenic nematodes with different foraging strategies

et al. 2006

View full text Add to dashboard Cite

Hylobius abietis is the most important pest of reforestation in Northern Europe. Weevils develop in stumps of felled conifers and emerging adults feed on and kill young trees. In trials conducted in each of 3 years, entomopathogenic nematodes were applied around pine stumps containing late instar weevils. Since these immature weevils are sedentary and occur within stumps at varying depths in soil, it is predicted that nematodes with a cruise foraging strategy, such as Heterorhabditis spp., should be most eVective. The three commercially available species used in our trials, H. megidis, Steinernema feltiae, and S. carpocapsae, have cruise, intermediate and ambush strategies, respectively. We also included the indigenous species H. downesi and a strain of S. feltiae isolated from an Irish coniferous forest. Heterorhabditis downesi suppressed emergence of adult weevils in 2 of 3 trials; and commercial S. feltiae and H. megidis NLH85 in 1 trial each. Stump excavation showed that H. downesi parasitized 55-63% of developing weevils; this was matched by H. megidis NLH85 and S. carpocapsae in 2 and 1 years, respectively. A higher proportion of larvae (46%) than of pupae (32%) or callow adults (30%) were parasitized by nematodes. All nematodes, including S. carpocapsae, parasitized weevils 40-49 cm from the bole of the stump and 30-39 cm below soil level. We conclude that heterorhabditids, particularly H. downesi, have greatest potential against pine weevils in stumps, but that a reputation as an ambush forager should not exclude a species such as S. carpocapsae from trials against sedentary subterranean insect pests.

show abstract

Section: Introductionmentioning

confidence: 99%

Suppression of the large pine weevil Hylobius abietis (L.) (Coleoptera: Curculionidae) in pine stumps by entomopathogenic nematodes with different foraging strategies

et al. 2006

View full text Add to dashboard Cite

show abstract

“…The death of larvae in treated trees was most likely caused by their contact with the insecticide, because there was no sign of infestation of larvae by parasitoids. The mortality of pest larvae developing in untreated trees was the lowest and caused by parasitoids from the Braconidae family, which are the main factor causing a reduction of P. castaneus populations (Kenis et al 1996(Kenis et al , 2004.…”

Section: Resultsmentioning

confidence: 99%

Insecticidal activity of alpha-cypermethrin against small banded pine weevil Pissodes castaneus (Coleoptera: Curculionidae) in forest plantations and thickets

Prokocka

Skrzecz

Sowińska

et al. 2016

Folia Forestalia Polonica

View full text Add to dashboard Cite

Scots pine (Pinus sylvestris) plantations and thickets damaged by biotic and abiotic factors are particularly attractive to small-banded pine weevil Pissodes castaneus, whose larvae excavate feeding tunnels in the stems of young trees, causing their death. There are no chemical methods that can be applied to protect forest plantations and thickets against this pest. Therefore, the studies were undertaken aimed at the assessment of the efficacy of alpha-cypermethrin used to reduce the numbers of this pest within restock areas. The scope of work included laboratory and field estimation of insecticidal activity of alpha-cypermethrin.In laboratory, the beetles of P. castaneus were reared on P. sylvestris twigs treated with five concentrations of alpha-cypermethrin (0.0001-1%) formulated as Fastac Forest 15 SC. Insect mortality was calculated during 7-day rearing and median lethal concentration LC 50 was calculated. The field treatments consisted of spraying of four-year old Scots pines with the insecticide in concentrations of 2% and 4%.In laboratory conditions, the insecticide used at five different concentrations caused a 7-95% mortality of the beetles (LC 50 = 0.266%), while field sprays resulted in a 1.5-3.5-fold reduction in the colonization of trees and in higher pest mortality rates.The results indicate the possibility of using of alpha-cypermethrin in protecting the forest against P. castaneus and can be the basis for the development of chemical method used in the forestry practice.

show abstract

“…In addition to their direct benefits as primary bio-degraders, saproxylic beetles are host to a wide range of parasitoid wasps, for example the generalist Dolichomitus tuberculatus Geoffroy that also parasitizes H. abietis larvae (Kenis et al, 2004;Hilszczanski et al, 2005;Hedgren, 2007). Saproxylic beetles also help sustain predatory beetles on clearfell sites (Johansson et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Saproxylic beetles also help sustain predatory beetles on clearfell sites (Johansson et al, 2007). Birds and other vertebrate predators that are attracted to clearfell sites by saproxylic beetles may target the adult stages of H. abietis (Kenis et al, 2004). In general, the greater the biodiversity and abundance of beneficial saproxylic beetles, the easier it becomes to maintain low-impact, sustainable forestry (Grove, 2002).…”

Section: Introductionmentioning

confidence: 99%

The impact of entomopathogenic nematodes on a non-target, service-providing longhorn beetle is limited by targeted application when controlling forestry pest Hylobius abietis

2012

View full text Add to dashboard Cite

Parasitoids, Predators, Nematodes and Pathogens Associated with Bark Weevil Pests

Cited by 14 publications

References 44 publications

Suppression of the large pine weevil Hylobius abietis (L.) (Coleoptera: Curculionidae) in pine stumps by entomopathogenic nematodes with different foraging strategies

Suppression of the large pine weevil Hylobius abietis (L.) (Coleoptera: Curculionidae) in pine stumps by entomopathogenic nematodes with different foraging strategies

Insecticidal activity of alpha-cypermethrin against small banded pine weevil Pissodes castaneus (Coleoptera: Curculionidae) in forest plantations and thickets

The impact of entomopathogenic nematodes on a non-target, service-providing longhorn beetle is limited by targeted application when controlling forestry pest Hylobius abietis

Contact Info

Product

Resources

About