Biological parameters and estimation of the vectorial capacity of two subspecies of Triatoma protracta (Uhler) and their laboratory hybrids in Mexico

IF 1.4 3区农林科学 Q2 ENTOMOLOGY Journal of Vector Ecology Pub Date : 2021-11-04 DOI:10.52707/1081-1710-46.2.148

J. Martínez-Ibarra, Miguel Alejandro Cárdenas-Sosa, O. Montañez-Valdez, J. Michel-Parra, B. Nogueda-Torres

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引用次数: 5

Abstract

ABSTRACT: Chagas disease is one of the most important vector-borne diseases in Latin America. Studying the biological parameters of each vector species or subspecies contributes to our understanding of their epidemiologic importance. The aim of our study was to compare the biological parameters and start to estimate the vectorial capacity of Triatoma protracta protracta Ryckman, T. p. nahuatlae Ryckman, and their laboratory hybrids. Specifically, we estimated nine biological parameters to increase knowledge about the potential role of triatomine hybrids in the transmission of T. cruzi to reservoir hosts. Nine biological parameters related to the lifecycle, feeding and defecation patterns, number of females, fecundity, and egg eclosion rates in cohorts of T. p. protracta, T. p. nahuatlae, and their hybrids were evaluated and compared. Eight parameters (exception: number of laid eggs) indicated that T. p. nahuatlae was a potentially effective vector of T. cruzi. Our results showed that the hybrid cohorts had better fitness and could potentially have higher vectorial capacity than the parental cohorts. The outstanding characteristics of the hybrids found in our study could lead to an increase in the epidemiologic risks caused by transmission of T. cruzi to humans.

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墨西哥两个长柄三角虫亚种及其实验室杂交种的生物学参数和媒介能力估计

摘要:恰加斯病是拉丁美洲最重要的媒介传播疾病之一。研究每种病媒种或亚种的生物学参数有助于我们了解其流行病学重要性。本研究的目的是比较长尾三角蝽(Triatoma protracta protracta Ryckman)、T. p. nahuatlae Ryckman及其实验室杂交种的生物学参数，并开始估计其传病能力。具体来说，我们估计了9个生物学参数，以增加对triatomine杂种在克氏锥虫传播给宿主的潜在作用的认识。比较了长毛瓢虫(T. p.p protracta)、纳瓦特瓢虫(T. p.a nahuatlae)及其杂种群体的生命周期、摄食和排便方式、雌虫数量、繁殖力和卵羽化率等9个生物学参数。8项参数(产卵数除外)表明纳华特雷绦虫可能是克氏绦虫的有效媒介。我们的研究结果表明，杂种群体具有更好的适应度，并且可能比亲本群体具有更高的载体容量。本研究中发现的杂交体的突出特征可能导致克氏锥虫传播给人类的流行病学风险增加。

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来源期刊

Journal of Vector Ecology 生物-昆虫学

CiteScore

2.60

自引率

5.90%

发文量

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.