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首页> 外文期刊>Journal of entomology >Prey Preference of Orius niger (Wolf.) and O. minutus (L.) from Thrips tabaci (Lind.) and Tetranychus urticae (Koch.)
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Prey Preference of Orius niger (Wolf.) and O. minutus (L.) from Thrips tabaci (Lind.) and Tetranychus urticae (Koch.)

机译：来自烟蓟马（Thrips tabaci（Lind。））和四叶草（Tetranychus urticae（Koch。）的黑腹Orius niger（Wolf。）和O. minutus（L.）的猎物偏好

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摘要

The two-spotted spider mite (TSSM), Tetranychus urticae Koch and onion thrips (OT), Thrips tabaci Lindeman, are two serious pests of potato and Orius niger (Wolff) and O. minutus (Linnaeus) are major predators of these pests in the potato fields in Ardabil region. Therefore, we compared the predation potential and fecundity of these predator when they fed on 2nd instar larvae of thrips and female mites on potato leaves in the no-choice and choice experiments in a growth chamber that was set at 24 ?,?± 1 ?,?°C, 50 ?,?± 5% RH and 16: 8 h (L:D) photoperiod. In the no-choice tests, O. niger showed lower nymphal mortality percentage, higher fecundity and higher killing rate (km) when fed on 2nd instar larvae of thrips than female mites. O. minutus showed lower nymphal mortality percentage, higher fecundity and higher killing rate (km) on female mites than 2nd instar larvae of thrips. In the choice tests, the number of 2nd instar larvae of thrips consumed by different nymphal instars and the adult pairs of O. niger were significantly higher than the number of female mites consumed. Different nymphal instars and the adult pairs of O. minutus consumed significantly more female mites compare to 2nd instar larvae of thrips. Based on these results it can be concluded that O. niger and O. minutus are effective natural enemies of OT and TSSM in the potato fields, respectively.
机译：二斑叶螨（TSSM），叶螨（Tetranychus urticae Koch）和洋葱蓟马（OT），烟蓟马（Thrips tabaci Lindeman）是马铃薯的两种严重害虫，奥里乌斯·尼日尔（Orius niger）（沃尔夫（Wolff））和小菜蛾（O. minutus（Linnaeus））是这些害虫的主要捕食者阿尔达比勒地区的马铃薯田。因此，我们在设置为24？，？±1？的生长室中的非选择和选择实验中，比较了这些捕食者捕食马铃薯叶片上蓟马和雌螨的第二龄幼虫时的捕食潜力和繁殖力。 ，？°C，50？，？±5％RH和16：8 h（L：D）光周期。在非选择试验中，与雌螨相比，饲喂蓟马二龄幼虫的黑曲霉显示出较低的若虫死亡率，较高的繁殖力和较高的杀灭率（km）。 O. minutus在雌螨上显示出比第二龄蓟马幼虫更低的若虫死亡率，更高的繁殖力和更高的杀灭率（km）。在选择测试中，不同的若虫龄幼虫和成年产的O.niger食用蓟马的二龄幼虫数量明显高于所消耗的雌性螨虫数量。与第二龄蓟马幼虫相比，不同的若虫幼虫和成年的O. minutus对雌性螨虫的消耗量明显增加。根据这些结果，可以得出结论：黑麦和黑麦分别是马铃薯田中OT和TSSM的有效天敌。

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