红花家蝶寄生对桔斑蝶的密度依赖跨代效应

IF 3.4 2区农林科学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biological Control Pub Date : 2025-09-09 DOI:10.1016/j.biocontrol.2025.105890

Silin Chen , Siyu Chen , Jianfeng Liu , Fangling Xu , Maofa Yang , Chengxu Wu , Runa Zhao

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引用次数: 0

摘要

外寄生螨可以通过改变寄主昆虫的生长、繁殖和存活来显著影响寄主昆虫种群。本研究探讨了中华绿脓杆菌（Yu, Zhang & He）（prostimata: Pyemotidae）寄生对桔斑蝶（Megabruchidius dorsalis, Fahraeus, 1839）（鞘翅目：金蝇科：Bruchinae）生活史性状和种群动态的密度依赖性。采用两性生命表法，分析了不同密度（每寄主5、10和20螨）中华家蝇对亲代和子代的影响。结果表明，低密度寄主（5螨）显著降低了亲本的繁殖力（由25.310个卵/雌降至13.220个卵/雌），抑制了子代的种群增长（R0降至0.203），这可能与母性效应有关。在高密度螨寄生（10和20螨）下，亲本成虫寿命延长，成熟延迟，繁殖受到抑制，而后代则部分恢复生殖潜能。研究结果表明，中华家蝇寄生可通过密度依赖效应和代际效应破坏桃蚜种群动态，为其作为一种生物防治剂的潜力提供了新的思路。

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Density-dependent transgenerational effects of Pyemotes zhonghuajia parasitism on the Megabruchidius dorsalis

Ectoparasitic mites can significantly influence host insect populations by altering their growth, reproduction, and survival. This study investigates the density-dependent effects of Pyemotes zhonghuajia (Yu, Zhang & He) (Prostigmata: Pyemotidae) parasitism on the life history traits and population dynamics of Megabruchidius dorsalis (Fahraeus, 1839) (Coleoptera: Chrysomelidae: Bruchinae). Using a two-sex life table approach, we analyzed the impact of different P. zhonghuajia densities (5, 10, and 20 mites per host) on both parental and offspring generations. The results showed that low-density parasitism (5 mites) significantly reduced parental fecundity (from 25.310 to 13.220 eggs/female) and suppressed offspring population growth (R₀ reduced to 0.203), likely due to maternal effects. Under high-density mite parasitism (10 and 20 mites), parental adults exhibit extended longevity, delayed maturation, and suppressed reproduction, while the offspring show a partial restoration of reproductive potential. The findings suggest that P. zhonghuajia parasitism disrupts M. dorsalis population dynamics through density-dependent and intergenerational effects, offering insights into its potential as a biocontrol agent.

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来源期刊

Biological Control 生物-昆虫学

CiteScore

7.40

自引率

7.10%

发文量

220

审稿时长

63 days

期刊介绍： Biological control is an environmentally sound and effective means of reducing or mitigating pests and pest effects through the use of natural enemies. The aim of Biological Control is to promote this science and technology through publication of original research articles and reviews of research and theory. The journal devotes a section to reports on biotechnologies dealing with the elucidation and use of genes or gene products for the enhancement of biological control agents. The journal encompasses biological control of viral, microbial, nematode, insect, mite, weed, and vertebrate pests in agriculture, aquatic, forest, natural resource, stored product, and urban environments. Biological control of arthropod pests of human and domestic animals is also included. Ecological, molecular, and biotechnological approaches to the understanding of biological control are welcome.