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首页> 外文期刊>Journal of Economic Entomology >Nutritional Manipulation of Adult Female Orius pumilio (Hemiptera:Anthocoridae) Enhances Initial Predatory Performance
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Nutritional Manipulation of Adult Female Orius pumilio (Hemiptera:Anthocoridae) Enhances Initial Predatory Performance

机译:成年雌性Orius pumilio(Hemiptera:Anthocoridae)的营养操纵可增强初始掠食能力

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摘要

Commercial shipments of Orius spp. (Hemiptera: Anthocoridae) commonly include water and protein, the latter typically supplied by eggs from a moth such as Ephestia kuehniella (Zeller). To determine whether modified dietary conditions might improve predation, newly eclosed adult female Orius pumilio (Champion) were fed on E. kuehniella eggs plus encapsulated water, encapsulated 5% sucrose solution only, or encapsulated water only for periods of 24, 48, or 72 h. Feeding activity was assessed by measuring the area of a crop in digital images of dissected digestive tracts. Adult females fed continuously on eggs had larger crops than did females fed on encapsulated sucrose solution. When females were prefed encapsulated water or sucrose and then fed 3 h on eggs, their crops became highly engorged and were larger than those in females fed continuously on eggs for the same periods. In behavioral choice tests, adult females prefed on encapsulated water or 5% sucrose solution spent a larger portion of time in contact with eggs, presumably feeding, whereas females prefed on eggs showed no preference between eggs or encapsulated water. After overnight shipping, females prefed on water or sucrose and held for 48 h total consumed 3.6- and 4.3-fold, respectively, more western flower thrips, Frankliniella occidentalis (Pergande), in 3 h than those prefed on eggs. Survival rates when prefed on sugar or water were comparable with prefeeding on eggs. Thus, inundative releases of Orius can be enhanced by starvation, because females initially feed much more voraciously after shipment with no apparent reduction in fitness.
机译:Orius spp的商业发货。 (半翅目:Anthocoridae)通常包括水和蛋白质,后者通常由蛾类(如埃弗氏菌)的卵来提供。为了确定改良的饮食条件是否可以改善捕食,将新封闭的成年雌性Orius pumilio(冠军)饲喂kuehniella鸡蛋加封装的水,仅封装的5%蔗糖溶液或仅封装的水24、48或72 H。通过在解剖消化道的数字图像中测量农作物的面积来评估饲养活动。连续饲喂卵的成年雌性比包囊蔗糖溶液饲喂的雌性大。当给雌性饲喂胶囊化水或蔗糖,然后在卵上饲喂3 h时,它们的农作物变得高度饱满,并且比同期以卵连续饲喂的雌性农作物更大。在行为选择测试中,以胶囊化水或5%蔗糖溶液为食的成年雌性花了更多的时间与卵接触,大概是进食,而以卵为食的雌性在卵或囊化水之间没有偏爱。过夜运输后,雌性以水或蔗糖为食,共饲养48小时,在3 h内消耗的西花蓟马Frankiciella occidentalis(Pergande)分别比以卵为食的雌花多3.6倍和4.3倍。以糖或水为食的成活率与以蛋为食的成活率相当。因此,饥饿可以增加Orius的大量释放,因为雌性最初在装运后的饮食会更加吃力,而体质却没有明显降低。

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