首页> 外文期刊>Journal of Nematology, with Annual of Applied Nematology >First Record of Steinernema kraussei (Rhabditida: Steinernematidae) from Turkey and Its Virulence against Agrotis segetum (Lepidoptera: Noctuidae)
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First Record of Steinernema kraussei (Rhabditida: Steinernematidae) from Turkey and Its Virulence against Agrotis segetum (Lepidoptera: Noctuidae)

机译:土耳其Steinernema kraussei(Rhabditida:Steinernematidae)的第一记录及其对Agrotis segetum(鳞翅目:Noctuidae)的毒力。

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摘要

During a survey of entomopathogenic nematodes (EPNs) in the eastern Black Sea region of Turkey in 2009-2012, a steinernematid species was recorded and isolated using the Galleria-baiting method. The isolate was identified as Steinernema kraussei based on its morphological and molecular properties. The analysis of the ITS rDNA sequence placed the Turkish population of S. kraussei in the "feltiae-kraussei'' group in the clade that contains different isolates of the species. This is the first record of S. kraussei from Turkey. The efficacy of S. kraussei was tested on Agrotis segetum (Lepidoptera: Noctuidea) larvae at different densities (100, 300, and 500 infective juveniles (IJs) g(-1) dry sand) in laboratory conditions at 25 degrees C. The highest mortality (98%) was obtained with 500 IJs g 21 dry sand within 7 d after inoculation. Our results indicate that the new isolate is a highly promising biological control agent against A. segetum, one of the most serious soil pests of agricultural area and fruits worldwide.
机译:在2009年至2012年对土耳其黑海东部地区的致病性线虫(EPN)进行的一次调查中,记录了一个类线虫物种,并使用回廊诱饵法对其进行了分离。根据其形态和分子特性,该分离物被鉴定为Steinernema kraussei。 ITS rDNA序列分析将土耳其克雷伯氏菌群归入包含不同物种的进化枝的“ feltiae-kraussei”群中,这是来自土耳其的克雷索氏菌的首次记录。在25°C的实验室条件下,在不同密度(100、300和500感染性幼鱼(IJs g(-1)干砂))上以不同密度(100、300和500感染性少年(IJs)g(-1)干沙)对Agrotis segetum(鳞翅目:夜蛾)幼虫进行了克氏链球菌的测试。最高死亡率(98接种后7天内,用500 IJs g 21干砂获得了%),我们的结果表明,这种新分离物是一种极有希望的生物防治剂,用于抵抗A. segetum,这是全世界农业地区和水果中最严重的土壤害虫之一。

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