Sharma Priyanka, Sharma Prem Lal, Verma Subhash Chander, Thakur Shikha, Sharma Shubham, Sharma Prajjval
Department of Entomology, Dr. YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP), India.
Bull Entomol Res. 2025 Aug;115(4):482-494. doi: 10.1017/S0007485325000288.
(Mulsant) (Coccinellidae: Coleoptera) is a highly efficient predator of sap-sucking insect pests due to its high feeding capacity and broad prey range. The present investigation was carried out to find out the feeding potential and functional response of fed on different densities of (Thomas) (Aphididae: Hemiptera) nymphs in the condition with the overarching objective of appraising the ladybird beetle's potential as a distinguished biological control agent. The newly emerged coccinellid grubs of a particular stage were reared individually on Petri plates with a known number of nymphs of a particular stage. The single individual of consumed 1104.53, 936.53, 634.07, and 473.20 aphids in one generation when reared on the first, second, third, and fourth instars of , respectively. The female adult of predator recorded as a more voracious feeder compared to the male adult. exhibits a type II functional response against potato aphid, and a significantly negative linear coefficient was obtained after logistic regression analysis for the proportion of prey consumed (N/N) as a function of initial prey density (N). The functional response parameters, i.e. attack rate and handling time, were estimated by applying Roger's random predator equation. The attack rate increased, and handling time decreased with the advancement of the development stage of the predator. The voracious nature of both adults and grubs of the ladybird beetle makes this effective biocontrol agent to be used in the Integrated Pest Management Programme against the potato aphid.
多异瓢虫（Mulsant）（瓢虫科：鞘翅目）因其高捕食能力和广泛的猎物范围，是吸食汁液害虫的高效捕食者。本研究旨在探究在特定条件下，多异瓢虫取食不同密度桃蚜（Thomas）（蚜科：半翅目）若虫的捕食潜力和功能反应，总体目标是评估这种瓢虫作为杰出生物防治剂的潜力。特定阶段新羽化的瓢虫幼虫单独饲养在培养皿中，培养皿中有已知数量的特定阶段桃蚜若虫。当分别以桃蚜的一龄、二龄、三龄和四龄若虫饲养时，单头多异瓢虫在一代中分别消耗1104.53、936.53、634.07和473.20头蚜虫。与雄性成虫相比，捕食者的雌性成虫被记录为更贪婪的取食者。多异瓢虫对桃蚜表现出II型功能反应，对消耗猎物比例（N/N）作为初始猎物密度（N）的函数进行逻辑回归分析后，获得了显著的负线性系数。通过应用罗杰随机捕食者方程估计功能反应参数，即攻击率和处理时间。随着捕食者发育阶段的推进，攻击率增加，处理时间减少。瓢虫成虫和幼虫的贪婪本性使其成为用于综合虫害管理计划防治桃蚜的有效生物防治剂。
