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首页> 外文期刊>Journal of entomology >Laboratory studies on Euseius metwallyi a predator of the spider mite Tetranychus urticae on fruit trees in Egypt (Acarina: Phytoseiidae: Tetranychidae).
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Laboratory studies on Euseius metwallyi a predator of the spider mite Tetranychus urticae on fruit trees in Egypt (Acarina: Phytoseiidae: Tetranychidae).

机译:在埃及果树上对蜘蛛螨 Tetranychus urticae 的捕食者 Euseius metwallyi 进行的实验室研究(A螨:Phytoseiidae:Tetranychidae)。

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摘要

Some biological data of the phytoseiid mite species Euseius metwallyi were investigated to evaluate its ability in controlling the two-spotted spider mite Tetranychus urticae Koch on certain fruit trees under laboratory condition of 28+or-2 degrees C and 74+or-4% R.H. Adult E. metwallyi females were reared singly during their adulthood on apple, apricot, fig, grape and peach leaf discs and provided daily with constant number of T. urticae immature stages and adult females (5 preys/predator female). The predator appear more efficient on T. urticae immature stages. Adult female longevity, prey consumption and fecundity were significantly differed between leaves of the tested plants. The longest longevity (15.4 and 16.4 days), the greatest prey consumption (35.2 and 65.2 preys) and the highest fecundity (10.2 and 12.6 eggs) were recorded on peach leaves when feeding on T. urticae adult females and immature stages, respectively. On the other hand the shortest longevity (9.4 and 10.2 days), the lowest prey consumption (21.6 and 34.8 preys) and the least fecundity (3.8 and 4.2 eggs) were recorded on apricot leaves, when predator female fed on T. urticae adult females and immature stages respectively. The shortest duration period (4.4 days) and the highest prey consumption (18 preys) of E. metwallyi nymphal stages were recorded when feeding on T. urticae larvae. Predator female consumed significantly more preys (43.6 preys) and deposited significantly greater number of eggs (14.00 eggs) when feeding on T. urticae larvae than other prey stages. These results indicated that, plant leaf surface and prey stage are important factors affecting efficiency of this predator against the investigated prey pest.Digital Object Identifier http://dx.doi.org/10.3923/je.2012.107.114
机译:研究了28种实验室条件下植物寄生螨虫 Euseius metwallyi 的一些生物学数据,以评估其控制某些果树上的两点叶螨 Koch的能力。成人摄氏+或-2度和相对湿度74%或-4%。 metwallyi雌性成年后分别在苹果,杏,无花果,葡萄和桃叶盘上饲养,每天提供恒定数量的 T。荨麻疹,未成熟阶段和成年雌性(每只捕食者雌性5个猎物)。捕食者在 T上显得更有效率。荨麻疹不成熟的阶段。成年雌性的寿命,猎物的消耗和繁殖力在被测植物的叶子之间存在显着差异。摄食桃叶时,最长的寿命(15.4天和16.4天),最大的猎物消耗(35.2和65.2个猎物)和最高的繁殖力(10.2和12.6个卵)被记录在桃叶上。荨麻疹成年女性和未成熟阶段。另一方面,当捕食雌性捕食雌性时,杏叶上的寿命最长(9.4天和10.2天),猎物消耗最少(21.6和34.8个猎物),繁殖力最少(3.8和4.2个卵)。荨麻疹成年女性和未成熟阶段。 E的最短持续时间(4.4天)和最高猎物消费(18个猎物)。摄食 T时,记录了metwallyi 若虫的阶段。荨麻疹幼虫。捕食雌性时,捕食的雌性捕食的猎物明显更多(43.6个),并且产卵的数量显着增加(14.00个卵)。荨麻疹幼虫要比其他猎物阶段好。这些结果表明,植物叶片的表面和猎物的阶段是影响捕食者抵抗被调查的害虫的效率的重要因素。数字对象标识符http://dx.doi.org/10.3923/je.2012.107.114

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