Farooq Muhammad Umar, Qadri Hafiz Faqir Hussain, Khan Muhammad Ahmad
Department of Entomology, Faculty of Agriculture, University of Agriculture, 38040 Faisalabad, Pakistan.
Entomological Research Institute, Ayub Agriculture Research Institute (AARI), Faisalabad, Pakistan.
Pak J Biol Sci. 2017;20(3):160-164. doi: 10.3923/pjbs.2017.160.164.
Flowers are admirable in scenic good looks and artistic beautification. These are also playing necessary roles in therapeutic preparations. Aphid is an important sucking pest of various flowers in ornamental territories and it is generally controlled by predators, so it was necessary to evaluate which aphid species affect the predator more or less.
Biocontrol agent Coccinella septempunctata was used against cosmos aphid (Aphis spiraecola, rose aphid (Macrosiphum rosea), gul e ashrafi aphid (Aphis fabae), kaner aphid (Aphis nerii), chandni aphid (Sitobion avenae), dahlia aphid (Myzus persicae) and annual chrysanthemum aphid (Macrosiphoniella sanborni).
The grub of C. septempunctata consumed 283.8±9.04 M. rosea, 487.7±12.6 M. sanborni, 432.75±16.02 A. spiraecola, 478.2±8.07 A. fabae, 552.3±9.04 M. persicae, 142±1.32 A. nerii and 498.5±13.09 S. avenae in its whole larval life. The M. persicae and M. rosea consuming grubs showed 100% adult emergence while, M. sanborni, A. spiraecola, A. fabae and S. avenae showed 96.58, 89.02, 94.78 and 75.45% adult emergence, respectively.
The C. septempunctata has significant predatory potential against A. spiraecola, M. rosea, A. fabae, S. avenae, M. persicae and M. sanborni except A. nerii. Thus, further studies are needed to find out alternate predator to control A. nerii on ornamentals.
花朵在景观美观和艺术美化方面令人赞赏。它们在治疗制剂中也发挥着重要作用。蚜虫是观赏花卉领域各种花卉的重要刺吸式害虫,通常由捕食者控制,因此有必要评估哪些蚜虫种类对捕食者的影响或多或少。
使用生物防治剂七星瓢虫来防治波斯菊蚜(绣线菊蚜)、蔷薇长管蚜、豆蚜、夹竹桃蚜、麦长管蚜、桃蚜和一年生菊蚜。
七星瓢虫幼虫在整个幼虫期消耗了283.8±9.04只蔷薇长管蚜、487.7±12.6只一年生菊蚜、432.75±16.02只绣线菊蚜、478.2±8.07只豆蚜、552.3±9.04只桃蚜、142±1.32只夹竹桃蚜和498.5±13.09只麦长管蚜。以桃蚜和蔷薇长管蚜为食的幼虫成虫羽化率为100%,而以一年生菊蚜、绣线菊蚜、豆蚜和麦长管蚜为食的幼虫成虫羽化率分别为96.58%、89.02%、94.78%和75.45%。
七星瓢虫对绣线菊蚜、蔷薇长管蚜、豆蚜、麦长管蚜、桃蚜和一年生菊蚜具有显著的捕食潜力,但对夹竹桃蚜除外。因此,需要进一步研究以找到控制观赏植物上夹竹桃蚜的替代捕食者。