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Host range of Lepidelphax pistiae (Hemiptera: Delphacidae) and its potential impact on Pistia stratiotes L.?(Araceae)

机译:宿主范围的Lepidelphax pistiae(Hemiptera:Delphacidae)及其对Pistia stratiotes的潜在影响L.?(Araceae)

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摘要

Pistia stratiotes L.?(Araceae) is a floating aquatic plant that has become invasive in Florida. It is primarily controlled with herbicides, but two biocontrol agents have previously been released to assist in management of this species. A new potential biocontrol agent from Argentina, Lepidelphax pistiae Remes Lenicov (Hemiptera: Delphacidae), has been evaluated comprehensively for specificity after initial host range studies done in its native range indicated that it is likely specific to P.?stratiotes. Host range studies indicated that this insect is specific to P.?stratiotes, with no survival or reproduction occurring on any of the 42 other plant species tested. Impact studies indicated that this insect can significantly damage P.?stratiotes at medium and high population densities, which were comparable to those seen in its native range. Lepidelphax pistiae is sufficiently specific enough to warrant release and has a high probability of aiding management of P.?stratiotes populations in Florida.
机译:pistia stratiotels l.?(araceae)是佛罗里达州侵袭的浮动水生植物。它主要用除草剂控制,但先前已释放出两种生物防治剂以协助管理该物种。来自阿根廷的新潜在的生物防治,Lepidelphax pistiae remes Lenicov(血翅目性:德尔菲岛)已经全面评估了在其天然范围内完成的初始宿主范围研究后的特异性,表明它可能是P.?stratiotes的特异性。宿主测距研究表明,这种昆虫特异于P.?stratioteS,在测试的42种其他植物物种中的任何一个中没有生存或繁殖。影响研究表明,这种昆虫可以显着损伤中高人群密度的p.?stratiots,其与其天然范围中所见的那些相当。 Lepidelphax pistiae足够具体,可以保证释放,并在佛罗里达州的P.?stratiotes人群进行高概率。

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