Functional response and predation rate of Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) to Paracoccus marginatus (Hemiptera: Pseudococcidae) at different temperatures

文献类型： 外文期刊

第一作者： Rostami, Elahe

作者： Rostami, Elahe;Huang, Dao-Ling;Shi, Meng-Zhu;Madadi, Hossein;Fu, Jian-Wei;Zheng, Li-Zhen;Li, Jian-Yu

作者机构：

关键词： handling time; mealybug destroyer; papaya mealybug; searching efficiency

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.2； 五年影响因子：2.3 ）

ISSN： 0022-0493

年卷期： 2024 年

页码：

收录情况： SCI

摘要： The ladybug, Cryptolaemus montrouzieri (Mulsant) (Coleoptera: Cocccinellidae)(Mulsant)(Coleoptera: Cocccinellidae), is a highly efficient predator in controlling mealybug populations and is considered an effective agent for controlling the papaya mealybugs (Paracoccus marginatus) (Williams & Granara de Willink) (Hemiptera: Pseudococcidae). Various criteria have been proposed for evaluating predator effectiveness, with the consumption rate of prey by individual predators, specifically the functional response, emerging as a common and crucial metric. This study evaluated the functional responses of third- and fourth-instar larvae, as well as male and female adults (<48 h old) of C. montrouzieri to adult females of P. marginatus at 3 different temperatures (22 degrees C, 28 degrees C, and 35 degrees C) with 70% +/- 5% RH and a 12L:12D h photoperiod. Prey densities were 2, 4, 8, 16, 32, 45, or 60 papaya mealybugs per predator for all tests. The response to prey density by third- and fourth-instar larvae or both sexes of adult C. montrouzieri was a type II at all temperatures. The highest attack rate and lowest handling time were estimated at 28 degrees C in males and 35 degrees C in females, respectively. The highest daily prey consumption rate occurred at 35 degrees C in both the immature and adult stages of C. montrouzieri. These findings support the potential of C. montrouzieri in controlling the papaya mealybug, especially in tropical and subtropical regions, given its search efficiency at high temperatures tested in this study. However, additional field investigations are needed to ascertain the control efficacy of C. montrouzieri for this mealybug in biocontrol programs.

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