{"title":"Insecticidal potential of entomopathogenic nematodes of Northern Kazakhstan","authors":"A. Shibaeva, V. Shaikhutdinov, Bakhizhan Myrzabaevich Myrzabayev","doi":"10.31489/2022bmg3/117-122","DOIUrl":null,"url":null,"abstract":"The goal of this research experiment is to create a biological preparation based on predatory nematodes to control potato pests. 15 isolates of entomopathogenic nematodes were isolated: 13 were isolated from coniferous and mixed forests; 2 from soils of agricultural fields: 1 from a potato field, 1 from a field sown with perennial grasses. Nematodes were identified as Steinernematids based on the color of the corpses of larvae of Galleria mellonella and the morphology of males. Isolates of entomopathogenic nematodes from various habitats (forests, agricultural fields, grasslands) of Akmola and Pavlodar regions were isolated. Screening of isolates on the larvae of the seed nutcracker (Agriotes obscurus) was carried out. It is established that the wireworm is sensitive to all isolates. Of the 15 isolates tested, 12 of these isolates showed high mortality ability in relation to wireworm: about 50–70 % mortality in laboratory biotests; 3 isolates (AF 15, AF 22, and AS 36) could not cause more than 40 % of the average mortality of larvae. The screening results showed that the isolates AF 29, AF57, and KP76 are good isolates for further studies as a possible bioinsecticide agent against A. obscurus.","PeriodicalId":9377,"journal":{"name":"Bulletin of the Karaganda University. “Biology, medicine, geography Series”","volume":"97 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Karaganda University. “Biology, medicine, geography Series”","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31489/2022bmg3/117-122","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract

The goal of this research experiment is to create a biological preparation based on predatory nematodes to control potato pests. 15 isolates of entomopathogenic nematodes were isolated: 13 were isolated from coniferous and mixed forests; 2 from soils of agricultural fields: 1 from a potato field, 1 from a field sown with perennial grasses. Nematodes were identified as Steinernematids based on the color of the corpses of larvae of Galleria mellonella and the morphology of males. Isolates of entomopathogenic nematodes from various habitats (forests, agricultural fields, grasslands) of Akmola and Pavlodar regions were isolated. Screening of isolates on the larvae of the seed nutcracker (Agriotes obscurus) was carried out. It is established that the wireworm is sensitive to all isolates. Of the 15 isolates tested, 12 of these isolates showed high mortality ability in relation to wireworm: about 50–70 % mortality in laboratory biotests; 3 isolates (AF 15, AF 22, and AS 36) could not cause more than 40 % of the average mortality of larvae. The screening results showed that the isolates AF 29, AF57, and KP76 are good isolates for further studies as a possible bioinsecticide agent against A. obscurus.
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哈萨克斯坦北部昆虫病原线虫的杀虫潜力
本研究实验的目的是建立一种基于捕食性线虫的生物制剂来控制马铃薯害虫。共分离到15株昆虫病原线虫,其中针叶林和混交林分离到13株;2个来自农田土壤:1个来自马铃薯地,1个来自多年生草地。根据青虫幼虫尸体的颜色和雄虫的形态特征,鉴定线虫为斯坦纳线虫。从阿克莫拉和巴甫洛达尔地区不同生境(森林、农田、草原)分离到昆虫病原线虫。对种子胡桃钳(Agriotes obscurus)幼虫进行了分离物筛选。证实该线虫对所有分离株均敏感。在测试的15个分离株中,其中12个分离株显示出与线虫有关的高死亡率:在实验室生物测试中死亡率约为50 - 70%;3个分离株(af15、af22和as36)对幼虫的平均死亡率不超过40%。筛选结果表明,分离株af29、AF57和KP76可作为潜在的生物杀虫剂进一步研究。
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