نتایج جستجو برای: coccinella septempunctata
تعداد نتایج: 399 فیلتر نتایج به سال:
The predation and searching efficiency of fourth instar of predatory C. septempunctata at various densities of mustard aphid, Lipaphis erysimi (Kaltenbach) and predator was investigated under laboratory conditions. The feeding rate of predatory stage decreased at increased prey- and predator densities. Highest percent (92.80%) prey consumption was observed at initial prey density and lowest per...
The multicolored Asian ladybeetle, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was introduced into Western Europe in the late 1990s. Since the late 2000s, this species has been commonly considered one of the most abundant aphid predators in most Western European countries. In spite of the large amount of research on H. axyridis, information concerning its relative abundance in agroeco...
This study was carried out to evaluate the management of Myzus persicae (Sulzer) (Hemiptera: Aphididae) which infesting strawberry plants Fragaria ananassa (L.) by releasing different levels seven spotted lady beetle, Coccinella septempunctata L. (Coleoptera: Coccinellidae). under glasshouse conditions at two locations (Governorates), Nobariya (Behera governorate) and Perkash (Giza during seas...
Insect tarsal adhesive structures secrete a thin layer of fluid into the contact area. It was previously reported that the presence of this fluid significantly increases adhesion on various substrata. Previous data obtained from representatives of different insect groups suggest a difference not only in the chemical composition of the fluid, but also in its physical properties. In the present s...
Many insects possess hairy adhesive foot pads, supplemented with a tarsal secretion, which allow them to securely and reversibly attach to various kinds of natural substrates, also under complex environmental conditions. Conditions such as ambient temperature and humidity have been shown to influence the attachment ability of the dry adhesive foot pads in spiders and geckos. For insects, howeve...
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