Ecological drivers of St. Louis encephalitis virus activity in mosquito communities from Argentine agroecosystems

IF 2.3 3区农林科学 Q2 ENTOMOLOGY

Medical and Veterinary Entomology Pub Date : 2026-08-04 Epub Date: 2026-04-02 DOI:10.1111/mve.70066

Ana Paula Mansilla, Magdalena Laurito, Adrián Alejandro Farías, Adrián Diaz

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引用次数: 0

Abstract

Saint Louis encephalitis virus (SLEV) is an endemic arbovirus in the Americas, maintained in enzootic cycles involving mosquitoes and birds. Agroecosystems influence vector ecology and SLEV dynamics. We analysed mosquito communities and SLEV activity in agroecosystems of northeastern La Pampa, Argentina, assessing environmental and biological drivers. Mosquitoes were collected at 15 sites (2017–2019) using Centers for Disease Control light traps. SLEV was detected by RT-nested PCR, and minimum infection rate was estimated. We collected a total of 3075 mosquitoes; Culex interfor Dyar (Diptera: Culicidae) s.l. and Culex mollis Dyar & Knab s.l. were the most abundant. The abundance of Cx. interfor s.l. was associated with agricultural frequency, Cx. mollis s.l. abundance and species richness, whereas Cx. mollis s.l. abundance was only associated with Cx. interfor s.l. abundance. We also extended the known distributions of Anopheles albitarsis Lynch Arribálzaga and Culex acharistus Root. SLEV was detected in 35 of 229 pools across 6 sites. Viral activity was negatively associated with Cx. mollis s.l. abundance and distance to water, highlighting key ecological factors shaping SLEV transmission.

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阿根廷农业生态系统蚊子群落中圣路易斯脑炎病毒活动的生态驱动因素。

圣路易斯脑炎病毒（SLEV）是美洲的一种地方性虫媒病毒，在涉及蚊子和鸟类的地方病循环中保持。农业生态系统影响病媒生态学和SLEV动态。我们分析了阿根廷拉潘帕东北部农业生态系统的蚊子群落和SLEV活动，评估了环境和生物驱动因素。2017-2019年，采用美国疾病控制与预防中心诱蚊灯在15个地点采集蚊虫。采用rt -巢式PCR检测SLEV，估计最小感染率。共采集蚊虫3075只；蚊间库蚊（双翅目：库蚊科）和蚊家库蚊数量最多。Cx的丰度。interfor s.l与农业频度相关；软体动物的丰度和物种丰富度；mollis s.l.丰度仅与Cx相关。Interfor sl丰度。我们还扩展了已知albitarsis Lynch Arribálzaga和Culex acharistus Root的分布。在6个站点的229个池中有35个检测到SLEV。病毒活性与Cx呈负相关。mollis s.l.丰度和离水距离，突出了影响SLEV传播的关键生态因素。

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来源期刊

Medical and Veterinary Entomology 农林科学-昆虫学

CiteScore

3.70

自引率

5.30%

发文量

审稿时长

12-24 weeks

期刊介绍： Medical and Veterinary Entomology is the leading periodical in its field. The Journal covers the biology and control of insects, ticks, mites and other arthropods of medical and veterinary importance. The main strengths of the Journal lie in the fields of: -epidemiology and transmission of vector-borne pathogens changes in vector distribution that have impact on the pathogen transmission- arthropod behaviour and ecology- novel, field evaluated, approaches to biological and chemical control methods- host arthropod interactions. Please note that we do not consider submissions in forensic entomology.