Influence of Three Aphid Species for Determining the Stage-specific Functional Response of the Coccinellid Beetle Menochilus sexmaculatus (F.)

IF 0.2 4区 农林科学 Q4 ENTOMOLOGY Journal of the Kansas Entomological Society Pub Date : 2021-05-24 DOI:10.2317/0022-8567-93.3.185
Y. Hameed, Muhammad Farrukh Hamid, N. Ahmad, M. Sarmad, S. M. Zaka, Qamar Saeed, Muhammad Akbar Zafar Khan, K. Abbas, Muhammad Shahzaib, M. Zakria
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引用次数: 1

Abstract

ABSTRACT: Coccinellids are common predators of aphids, including Aphis nerii, Diuraphis noxia and Lipaphis erysimi. The zigzag ladybird beetle, Menochilus sexmaculatus, is an effective predator against various aphid species. In the present study, different stages of M. sexmaculatus were evaluated for their functional response against A. nerii, D. noxia, and L. erysimi. Functional response at different densities of aphids was calculated over a period of 24h at 25 ± 5 °C and 65 ± 5% RH. Roger's Random Predator equation was used to calculate the parameters of a functional response. All the predatory stages showed Type II functional response. Attack rate was highest in the fourth instar for all aphid species (4.5171, 2.5894 and 2.8853, respectively), while the shortest handling time of the fourth instar was recorded for A. nerii (0.0175h) and L. erysimi (0.0159h). In the case of D. noxia, the shortest handling time was observed in the first instar (0.0175h). The fourth instar of M. sexmaculatus consumed more prey, followed by the third instar. These results indicate that the fourth instar of M. sexmaculatus was the most effective stage against its prey, followed by the third instar, adult females and males. Further field experiments must be carried out to corroborate the efficacy of these predatory beetles under natural conditions.
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三种蚜虫对六斑金龟子阶段特异性功能反应的影响
摘要:瓢虫是常见的蚜虫捕食者,包括灰蚜、野蚜和赤蚜。之字形瓢虫(Menochilus sexmaculatus)是一种有效的蚜虫捕食者。在本研究中,研究了不同阶段的性棘球蚴对nerii、d.noxia和l.y ysimi的功能反应。在25±5°C和65±5% RH条件下,计算不同密度蚜虫在24h内的功能响应。罗杰的随机捕食者方程被用来计算功能响应的参数。各捕食阶段均表现为II型功能反应。4龄蚜虫的攻击率最高(分别为4.5171、2.5894和2.8853),4龄处理时间最短的蚜虫为灰衣蚜(0.0175h)和灰衣蚜(0.0159h)。以野田鼠为例,处理时间最短的是1龄,为0.0175h。四龄黄斑蛾的食用量最大,其次是三龄黄斑蛾。结果表明,四龄黄斑夜蛾对猎物的杀伤能力最强,三龄次之,雌成虫和雄成虫次之。必须进行进一步的实地实验,以证实这些掠食性甲虫在自然条件下的功效。
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来源期刊
CiteScore
1.60
自引率
0.00%
发文量
12
审稿时长
>12 weeks
期刊介绍: The Journal of the Kansas Entomological Society is a publication of the Kansas (Central States) Entomological Society, publishes research on all aspects of the sciences of entomology, and has world-wide authorship and readership.
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