首页> 外文期刊>Journal of Economic Entomology >Nontarget Effect of Entomopathogenic Nematodes on Larvae of Twospotted Lady Beetle (Coleoptera: Coccinellidae) and Green Lacewing (Neuroptera: Chrysopidae) Under Laboratory Conditions
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Nontarget Effect of Entomopathogenic Nematodes on Larvae of Twospotted Lady Beetle (Coleoptera: Coccinellidae) and Green Lacewing (Neuroptera: Chrysopidae) Under Laboratory Conditions

机译:在实验室条件下,昆虫病原线虫对双斑瓢虫(鞘翅目:球虫)的幼虫和绿色草ce(鞘翅目:Ch科)的幼虫无目标作用。

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摘要

The nontarget effect of Steinernema feltiae, Steinernema carpocapsae, Heterorhabditis bacteriophora, and three mixed suspensions of two species of entomopathogenic nematodes on the larvae of the twospotted lady beetle, Adalia bipunctata (L.) (Coleoptera: Coccinellidae), and on the larvae of the lacewing Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae), were studied in a laboratory bioassay. The assay was performed at three temperature (15, 20, and 25 degrees C) and at three different concentrations of the suspension (500, 2,500, and 5,000 infective juveniles [IJs]/ml). The larvae of A. bipunctata were more susceptible to nematode attack than the larvae of C. carnea. Four days after treatment, significantly the lowest mortality of A. bipunctata and C. carnea larvae was recorded at 15 degrees C, whereas no significant differences were noted between 20 and 25 degrees C. At 500 IJs/ml, the nematodes had significantly the lowest nontarget effect on the larvae of both aphid predators, whereas no significant differences in this regard were established between 2,500 and 5,000 IJs/ml. We conclude that the entomopathogenic nematodes under investigation exhibit a pronounced nontarget effect on the larvae of both predators mentioned.
机译:Steinernema thinkiae,Steinernema carpocapsae,Heterorhabditis bacteriophora和两种昆虫病线虫的三种混合悬浮液对两斑瓢虫Adalia bipunctata(L.)(Coleoptera:Coccinellidae)的幼虫和在实验室生物测定法中研究了草wingChrysoperla carnea(Stephens)(Neuroptera:Chrysopidae)。在三个温度(15、20和25摄氏度)和三种不同浓度的悬浮液(500、2,500和5,000感染性少年[IJ] / ml)下进行测定。双角线虫的幼虫比线虫的幼虫更容易受到线虫的侵袭。治疗后四天,在15摄氏度时记录到双歧A和角叉菜幼虫的最低死亡率,而在20到25摄氏度之间没有发现显着差异。在500 IJs / ml时,线虫的死亡率最低两种蚜虫对幼虫的幼虫都没有非目标作用,而在这方面,在2500至5,000 IJs / ml之间没有显着差异。我们得出的结论是,正在调查的昆虫病原线虫对提到的两种捕食者的幼虫均表现出明显的非目标作用。

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