Functional Response, Interference, and Predation Efficiency of Diomus guilavoguii (Coleoptera: Coccinellidae) on Paracoccus marginatus (Hemiptera: Pseudococcidae).

IF 2.9 2区农林科学 Q1 ENTOMOLOGY

Insects Pub Date : 2025-09-17 DOI:10.3390/insects16090971

Qijing Lin, Guoguo Ruan, Mingjie Tang, Xuanjie Guo, Meixiaoyun Yang, Xingmin Wang, Xiaosheng Chen

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引用次数: 0

Abstract

Paracoccus marginatus (Hemiptera: Pseudococcidae) poses a significant threat to over 200 plant species, severely impacting agricultural productivity. Diomus guilavoguii (Coleoptera: Coccinellidae) is a natural predator of P. marginatus. To develop an effective and environmentally friendly management strategy against P. marginatus, this study investigates the predation relationship between D. guilavoguii and P. marginatus by focusing on functional response and mutual interference under controlled laboratory conditions (Petri dishes). The results indicated that D. guilavoguii exhibits a type II functional response toward P. marginatus, with adults of D. guilavoguii demonstrating superior efficiency in preying upon P. marginatus (the theoretical daily maximum predation rate for female adults of D. guilavoguii on young mealybugs is 416.667). However, a decrease in the predators' search effect was observed with increasing prey density. Additionally, interspecific interference competition intensified as the number of predators increased, resulting in reduced predation efficiency. Consequently, D. guilavoguii shows promise biological control agent for the management of P. marginatus under laboratory conditions, although further studies in greenhouse and field environments are required to validate its potential in practical pest management.

查看原文本刊更多论文

guilavoguii Diomus（鞘翅目：瓢虫科）对边缘副绦虫（Pseudococcidae）的功能响应、干扰及捕食效率。

边缘副球菌（半翅目：假球虫科）对200多种植物物种构成严重威胁，严重影响农业生产力。吉拉氏Diomus guilavoguii（鞘翅目：瓢虫科）是边缘瓢虫的天敌。本研究在实验室条件下（培养皿），研究了guilavoguii D. guilavoguii和P. marginatus的捕食关系，探讨了它们之间的功能响应和相互干扰。结果表明，吉拉氏家鼠对边缘小绥螨的捕食表现为II型功能反应，吉拉氏家鼠成虫对边缘小绥螨的捕食效率较高（吉拉氏家鼠雌成虫对粉蚧幼虫的理论日最大捕食率为416.667）。然而，捕食者的搜索效应随着猎物密度的增加而降低。此外，随着捕食者数量的增加，种间干扰竞争加剧，导致捕食效率降低。因此，虽然需要在温室和田间环境中进一步研究以验证其在实际病虫害管理中的潜力，但在实验室条件下，guilavoguii是一种很有前景的生物防治剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Insects Agricultural and Biological Sciences-Insect Science

CiteScore

5.10

自引率

10.00%

发文量

1013

审稿时长

21.77 days

期刊介绍： Insects (ISSN 2075-4450) is an international, peer-reviewed open access journal of entomology published by MDPI online quarterly. It publishes reviews, research papers and communications related to the biology, physiology and the behavior of insects and arthropods. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.