Peridomestic conditions affect La Crosse virus entomological risk by modifying the habitat use patterns of its mosquito vectors

IF 1.4 3区 农林科学 Q2 ENTOMOLOGY
Tuamami T. Tamini, B. Byrd, J. Goggins, Charles B. Sither, L. White, G. Wasserberg
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引用次数: 5

Abstract

ABSTRACT: Anthropogenic land-use change may affect the transmission risk for endemic vector-borne diseases such as La Crosse encephalitis. In this study, we applied a comparative ecological approach to evaluate differences in vector species abundance, gonotrophic status, and environmental variables among six residential habitats (historical case houses) and six paired adjacent forest patches in a La Crosse virus endemic area of North Carolina. A total of 93,158 container Aedes spp. eggs were obtained by ovistrips and 1,040 resting mosquito adults were collected by large-bore aspiration from 10 June through 8 October, 2010. At sites characterized by high densities of artificial containers, the totals of eggs and adult mosquitoes were higher in the peridomestic plots. At sites characterized by lower densities of artificial containers, the totals of eggs and adult mosquitoes were higher in the forested plots. Although Aedes triseriatus, the primary La Crosse virus vector, was more commonly found in forested habitat overall, in sites characterized by high density of artificial containers, it was found in higher abundance in the peridomestic habitat. Similarly, the proportion of gonotrophically active (parous and gravid) mosquitoes was higher in the peridomestic habitat for sites with highartificial container density. Our study suggests that La Crosse virus transmission risk may be higher at peridomestic habitats with higher densities of artificial containers and thus reinforces the importance of public health measures to improve source reduction efforts.
周边环境通过改变蚊子媒介的栖息地使用模式影响拉克罗斯病毒的昆虫学风险
摘要:人为的土地利用变化可能会影响地方病媒传播疾病(如拉克罗斯脑炎)的传播风险。在这项研究中,我们应用了一种比较生态学方法来评估北卡罗来纳州拉克罗斯病毒流行区六个居住栖息地(历史病例屋)和六个成对相邻森林斑块之间媒介物种丰度、生殖营养状态和环境变量的差异。2010年6月10日至10月8日,共有93158只容器伊蚊。通过卵带采集了卵,通过大口径抽吸采集了1040只静止的成虫。在以高密度人工容器为特征的地点,橄榄岩地块的卵和成蚊总数较高。在人工容器密度较低的地点,林地中的蚊子卵和成虫总数较高。尽管主要的拉克罗斯病毒载体三纹伊蚊更常见于森林栖息地,在人工容器密度高的地方,但在橄榄岩栖息地发现的数量更高。同样,在高人工容器密度的橄榄岩栖息地,生殖活动(胎生和妊娠)蚊子的比例更高。我们的研究表明,在人造容器密度较高的橄榄岩栖息地,拉克罗斯病毒传播风险可能更高,因此加强了公共卫生措施对减少源头工作的重要性。
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来源期刊
Journal of Vector Ecology
Journal of Vector Ecology 生物-昆虫学
CiteScore
2.60
自引率
5.90%
发文量
31
审稿时长
6-12 weeks
期刊介绍: The Journal of Vector Ecology is an international journal published by the Society for Vector Ecology. It is concerned with all aspects of the biology, ecology, and control of arthropod and vertebrate vectors and the interrelationships between the vectors and the agents of disease that they transmit. The journal publishes original research articles and scientific notes, as well as comprehensive reviews of vector biology based on presentations at Society meetings. All papers are reviewed by at least two qualified scientists who recommend their suitability for publication. Acceptance of manuscripts is based on their scientific merit and is the final decision of the editor, but these decisions may be appealed to the editorial board. The journal began publishing in 1974 and now publishes on-line only.
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