Foraging behavior and virulence of some entomopathogenic nematodes

Lortkipanidze, Manana; Gorgadze, Oleg; Kajaia, Gia; Gratiashvili, Nana; Kuchava, Madona

doi:10.1016/j.aasci.2016.05.009

Cited by 18 publications

(15 citation statements)

References 12 publications

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“…H. bacteriophora showed promise against carrot weevil in Harrow where the soil is a fine sandy loam. The finer texture of the Harrow soil may have enabled greater mobility for H. bacteriophora which is a cruiser species 35,36 , than the sandy loam soil from Nova Scotia. In fine sandy loam soil, our results are similar to those by Miklasiewicz 33 where an early (mid‐June) application of H. bacteriophora resulted in reduced damage in parsley from carrot weevil.…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic nematodes for control of carrot weevil: efficacy and longevity in muck and mineral soils

Blatt

McDonald

Mlynarek

2021

Pest Management Science

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BACKGROUND Carrot weevil is an important pest throughout carrot‐producing regions in Canada. Pesticides to control carrot weevil adults require application when the majority of adults have emerged and often this occurs after oviposition has already commenced and damage will be realized. One alternative to conventional pesticides are entomopathogenic nematodes. We studied four commercially available entomopathogenic nematode products (Steinernema feltiae, S. carpocapsae, S. kraussei and Heterorhabditis bacteriophora) for efficacy against carrot weevil in Nova Scotia and Ontario carrot fields in 2017 and 2018. The longevity and infectivity of the products in fine sandy loam soil (Ontario) and sandy loam soil (Nova Scotia) were evaluated using Galleria mellonella larvae. RESULTS In Nova Scotia soils, only S. kraussei when applied twice, showed some efficacy to reduce damage from carrot weevil in 2017. In Ontario, an early application of H. bacteriophora and S. feltiae significantly reduced the percentage of carrots with weevil damage in 2018. Longevity and infectivity of S. carpocapsae and S. feltiae (against G. mellonella) was obtained up to 6 weeks post application in Nova Scotia in 2017. Similarly, S. feltiae showed infectivity up to 9 weeks post application in Ontario and Nova Scotia in 2018. CONCLUSION Entomopathogenic products showed an ability to survive and remain infective for up to 9 weeks in soils without irrigation. Timing of application to effect control of carrot weevil requires further study. The influence of soil moisture on the longevity and infectivity of these products is discussed. © 2021 Her Majesty the Queen in Right of Canada International Pest Management Science © 2021 Society of Chemical Industry. Reproduced with the permission of the Minister of Agriculture and Agri‐Food Canada.

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Section: Discussionmentioning

confidence: 99%

Entomopathogenic nematodes for control of carrot weevil: efficacy and longevity in muck and mineral soils

Blatt

McDonald

Mlynarek

2021

Pest Management Science

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“…digolongkan sebagai nematoda penyergap (ambusher), sedangkan Heterorhabditis sp. sebagai pemburu (cruiser) (Lortkipanidze et al 2016).…”

Section: Isolat Nps Dan Pembiakannyaunclassified

“…Masing-masing perlakuan terdiri atas 30 ekor uret yang diletakkan secara individual di dalam pot plastik berdiameter 5 cm dan tinggi 7 cm. Penguji-an ini menggunakan metode kolom pasir (Lortkipanidze et al 2016) sebagai media penularan nematoda ke inangnya. Ke dalam setiap pot diisi 60 g media tanah berpasir yang diambil dari lokasi pengambilan uret dan media tersebut telah disterilisasi sebelumnya pada suhu 100°C selama 24 jam.…”

Section: Patogenisitas Nps Terhadap Uret L Stigmaunclassified

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Pathogenicity of Entomopathogenic Nematode on Sugarcane White Grub Lepidiota stigma (Coleoptera: Scarabaeidae)

Indrayani¹,

Subiyakto²,

Chaerani³

2018

BPN

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Sugarcane (Saccharum officinarum) is one of high-value commodities in Indonesia for producing sugar. Sugarcane production recently reduced due to insect pests attacked, mainly white grub Lepidiota stigma (Coleoptera: Scarabaeidae). Utilization of entomopathogenic nematodes (EPN) is one of the alternative control methods for sugarcane white grub. The aim of the present study was to select the higher pathogenicity of EPN isolates for controlling the sugarcane insect pest. The study was conducted in Insect Pathology Laboratory of Indonesia Sweeteners and Fiber Crops Research Institute. Nine isolates of EPN, e.g. DKS-1, AGH-1, DKH-1, DKH-5, NH-1, NH-2, PH-1, PH-2, and PH-4 and one untreated control were tested for their pathogenicity against sugarcane white grub, L. stigma. Each treatment was arranged in Completely Randomized Design with three replications. Every treatment consisted of 30 individuals of the third instar of white grub which treated by 2 × 104 infective juvenile or IJ of EPN isolates. Parameter observed was the mortality of sugarcane white grub, L. stigma. The result showed that all of EPN isolates tested were promising pathogenic against the white grub with about 10 to 80% of the average percentage of mortality. However, DKS-1 and PH-1 showed more pathogenic against L. stigma with about 80–90% and 70–80% of white grub mortality, respectively. The highest enhancement of white grub mortality occurred at 72 hours after treatment and it was showed by DKS-1 and PH-1 isolates which increased the percentage of white grub mortality about 57.1 and 50%, respectively. Obtaining the promising isolates of NPS with different host seeking strategies will potentially increase the effectivity of control against white grub with the result to increase the yield of sugarcane.

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“…Two entomopathogenic nematodes isolated from Georgian ecosystems Heterorhabditis bacteriophora (HRB, GEO) [10] and new species of entomopathogenic nematode, Steinernema borjomiense n. sp., was isolated from the body of the host insect, Oryctes nasicornis (Coleoptera: Scarabaeidae), in Georgia, in the territory of Borjomi-Kharagauli [11] were used to assay their effectiveness against adult H. halys.…”

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confidence: 99%

Testing local isolates of entomopathogenic microorganisms against Brown Marmorated Stink Bug Halyomorpha halys in Georgia

Burjanadze¹,

Kharabadze²,

Сhkhidze³

2020

BIO Web Conf.

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The brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae) (BMSB) is an exotic invasive insect which has spread extensively and established in new area of Black sea regions of Georgia. During 2017-2019, infected adults with fungal disease symptoms were found in population of H. halys from different regions of Western Georgia. Three isolates of entomopathogenic fungus Beauveria bassiana sensu lato and one of Isaria cf fumosorosea were recovered. Mycoinsecticide Bover-Ge, based on a local strain of B. bassiana-024 (isolated from soil high mountain of Caucasus Range, provide molecular identification in CABI-UK, gave a unique cultural number - IMI # 501797 and keep in CABI Genetic Recourse Collection) two concentrations (1×107 and 1×108 conidia/ml) was tested on the adults of H. halys in laboratory and its efficiency reached 72.0-90.5%. Under laboratory conditions, local isolates of nematodes Heterorhabditis bacteriophora and Steinernema borjomiensis were tested on H. halys adults. At three increasing concentrations (200, 500 and 1000 IJs/mL), H. bacteriophora caused bug mortality at the rates of 33-47%. As for Steinernema borjomiensis, the respective values were 13-33%.

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Foraging behavior and virulence of some entomopathogenic nematodes

Cited by 18 publications

References 12 publications

Entomopathogenic nematodes for control of carrot weevil: efficacy and longevity in muck and mineral soils

Entomopathogenic nematodes for control of carrot weevil: efficacy and longevity in muck and mineral soils

Pathogenicity of Entomopathogenic Nematode on Sugarcane White Grub Lepidiota stigma (Coleoptera: Scarabaeidae)

Testing local isolates of entomopathogenic microorganisms against Brown Marmorated Stink Bug Halyomorpha halys in Georgia

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