Effect of entomopathogenic nematodes on Plectrodera scalator (Fabricius) (Coleoptera: Cerambycidae)

Fallon, Declan J.; Solter, Leellen F.; Bauer, Leah S.; Miller, Deborah L.; Cate, James R.; McManus, Michael L.

doi:10.1016/j.jip.2006.01.006

Cited by 8 publications

(6 citation statements)

References 8 publications

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“…These nematodes caused mortality of between 42 and 93% at the doses of 50, 100 and 150 DJs/larva of D. pseudopreissi. A similar study performed on another cerambycid beetle, the cottonwood borer; Plectrodera scalator at doses of 10, 50 and 100 DJs/larva by Fallon et al (2006) (Fallon et al 2004). …”

Section: Discussionmentioning

confidence: 87%

Pathogenicity, reproduction and foraging behaviours of some entomopathogenic nematodes on a new turf pest,Dorcadion pseudopreissi(Coleoptera: Cerambycidae)

Susurluk

Kumral

Peters

et al. 2009

Biocontrol Science and Technology

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Entomopathogenic nematodes (EPNs) in the families Heterorhabditidae and Steinernematidae have considerable potential as biological control agents of soil-inhabiting insect pests. In the present study, the control potential of the EPNs Steinernema carpocapsae (TUR-S4), S. feltiae (Nemaplus), S. carpocapsae (Nemastar), S. feltiae (TUR-S3) and Heterorhabditis bacteriophora (Nematop) against a new longicorn pest, Dorcadion pseudopreissi Breuning, 1962 (Coleoptera: Cerambycidae), on turf was examined in laboratory studies. Pathogenicity tests were performed at the following doses: 50, 100 and 150 Dauer Juveniles (DJs)/larva at 258C. Highest mortalities (75Á92%) of the larvae were detected at the dose of 150 DJs/larva for all nematodes used. Reproduction capabilities of the used EPNs were examined at doses of 50, 75, 100 and 150 DJs/larva at 258C. S. carpocapsae (TUR-S4) had the most invasions (32 DJs/larva) and reproduction (28042 DJs/larva) at the dose of 100 DJs, and the highest reproduction (per invaded DJ into a larva) was observed in H. bacteriophora (Nematop) (2402.85 DJs) at a dose of 50 DJs. The foraging behaviour of the nematodes in the presence of D. pseudopreissi and Galleria mellonella L. (Lepidoptera: Galleriidae) larvae was studied using a Petri dish filled with sand at 208C. All of the used nematodes accumulated near the larvae section of both insect species (32Á53% of recovered DJs) with a higher percentage of S. carpocapsae (TUR-S4) (53%) and H. bacteriophora (48%) (Nematop) moving towards larvae of D. pseudopreissi, than the S. feltiae strains.

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Section: Discussionmentioning

confidence: 87%

Pathogenicity, reproduction and foraging behaviours of some entomopathogenic nematodes on a new turf pest,Dorcadion pseudopreissi(Coleoptera: Cerambycidae)

Susurluk

Kumral

Peters

et al. 2009

Biocontrol Science and Technology

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“…Machado et al (2003) by selected EPNs for control of Migdolus fryanus (Westwood, 1863) (Coleoptera: Vesperidae) larvae and observed high susceptibility to genus Heterorhabditis, with up to 100% mortality. On the other hand, for Plectrodera scalator (Fabr., 1792) (Coleoptera: Cerambycidae) larvae with only S. carpocapsae All and S. feltiae SN isolates it was obtained mortality higher than 50%, and high concentrations were required to cause significant insect mortality (FALLON et al, 2006 These data reinforce the need to carefully select entomopathogenic nematode isolates, because biological features and adaptations to the environment can cause great variation among species, and even among isolates of the same species (GAUGLER et al, 1997). Our results demonstrate this variability, and the importance of conducting tests in order to choose the most appropriate isolate for insect control.…”

Section: Selection Of Nematode Isolatesmentioning

confidence: 77%

Potential of Entomopathogenic Nematodes for Control of the Erva-Mate Pest Hedypathes Betulinus (Klug, 1825) (Coleoptera: Cerambycidae)

Alves

Fanti

et al. 2017

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The intensive exploitation of "erva mate" (Ilex paraguariensis St. Hil.) (Aquifoliaceae) has favored the emergence of pests, including Hedypathes betulinus. We evaluated 18 isolates of entomopathogenic nematodes Steinernema and Heterorhabditis genera for control of H. betulinus adults, and tested nematode in-vivo replication capacity in Galleria mellonella L. (Lepidoptera: Pyralidae) larvae. We also evaluated the effect of adjuvants for foliar application, and the efficiency of nematode isolates selected in erva mate seedlings in the greenhouse via application to soil and plant shoots. The PI and CB40 isolates showed the hgh virulence (92.5% insect mortality by both). The PI isolate showed low productivity in G. mellonella larvae, thus only CB40 was used in subsequent tests. Only emulsified vegetable oil adjuvant was compatible with nematodes. Soil application of nematodes proved ineffective; however, shoot application on erva mate seedlings showed significant mortality (82.5%) after exposure to the CB40 isolate without adjuvant. Keywords: Steinernema, Heterorhabditis, Ilex paraguaiensis, biological control. ResumoA exploração intensiva da erva-mate (Ilex paraguariensis St. Hil.) (Aquifoliaceae), tem favorecido o surgimento de pragas incluindo a broca-da-erva-mate (Hedypathes betulinus). Visando seu controle avaliouse a virulência de 18 isolados de nematoides entomopatogênicos dos gêneros Steinernema e Heterorhabditis sobre adultos do inseto e a capacidade de multiplicação in vivo dos nematoides em larvas de Galleria mellonella L. (Lepidoptera: Pyralidae). Foi avaliado também o efeito de adjuvantes foliares e a eficiência dos nematoides selecionados sobre o inseto, em mudas de erva-mate, em casa de vegetação, com aplicação no solo e na parte aérea das plantas. Os isolados PI e CB40 foram os de maior virulência sobre o inseto (92,5% de mortalidade, para ambos), porém o isolado PI mostrou-se pouco produtivo em larvas de G. mellonella e apenas o isolado CB40 foi usado nos testes subsequentes. Dentre os adjuvantes avaliados, somente o óleo vegetal foi compatível com o nematoide. No teste em casa-de-vegetação com aplicação no solo não foi observada mortalidade dos insetos. A aplicação na parte aérea das mudas de erva-mate apresentou efeito significativo, em relação à testemunha, sendo que com o isolado CB40 aplicado sem adjuvante obteve-se mortalidade de 82,5%.

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“…By contrast, the St . glaseri – Xenorhabdus poinarii couple is virulent principally in a few coleopteran species, such as Popillia japonica and Cyclocephala hirta , suggesting a potentially narrow host specificity (Wang et al 1994; Converse and Grewal 1998; Rosa et al 2002; Fallon et al 2006). …”

Section: Introductionmentioning

confidence: 99%

Attenuated Virulence and Genomic Reductive Evolution in the Entomopathogenic Bacterial Symbiont Species, Xenorhabdus poinarii

Ogier

Pagès

Bisch

et al. 2014

Genome Biology and Evolution

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Bacteria of the genus Xenorhabdus are symbionts of soil entomopathogenic nematodes of the genus Steinernema. This symbiotic association constitutes an insecticidal complex active against a wide range of insect pests. Unlike other Xenorhabdus species, Xenorhabdus poinarii is avirulent when injected into insects in the absence of its nematode host. We sequenced the genome of the X. poinarii strain G6 and the closely related but virulent X. doucetiae strain FRM16. G6 had a smaller genome (500–700 kb smaller) than virulent Xenorhabdus strains and lacked genes encoding potential virulence factors (hemolysins, type 5 secretion systems, enzymes involved in the synthesis of secondary metabolites, and toxin–antitoxin systems). The genomes of all the X. poinarii strains analyzed here had a similar small size. We did not observe the accumulation of pseudogenes, insertion sequences or decrease in coding density usually seen as a sign of genomic erosion driven by genetic drift in host-adapted bacteria. Instead, genome reduction of X. poinarii seems to have been mediated by the excision of genomic blocks from the flexible genome, as reported for the genomes of attenuated free pathogenic bacteria and some facultative mutualistic bacteria growing exclusively within hosts. This evolutionary pathway probably reflects the adaptation of X. poinarii to specific host.

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Effect of entomopathogenic nematodes on Plectrodera scalator (Fabricius) (Coleoptera: Cerambycidae)

Cited by 8 publications

References 8 publications

Pathogenicity, reproduction and foraging behaviours of some entomopathogenic nematodes on a new turf pest,Dorcadion pseudopreissi(Coleoptera: Cerambycidae)

Pathogenicity, reproduction and foraging behaviours of some entomopathogenic nematodes on a new turf pest,Dorcadion pseudopreissi(Coleoptera: Cerambycidae)

Potential of Entomopathogenic Nematodes for Control of the Erva-Mate Pest Hedypathes Betulinus (Klug, 1825) (Coleoptera: Cerambycidae)

Attenuated Virulence and Genomic Reductive Evolution in the Entomopathogenic Bacterial Symbiont Species, Xenorhabdus poinarii

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