Meraz-Medina Tzintli, Nogueda-Torres Benjamín, Ceballos-Rodríguez René Salvador, Godínez-Aceves Karla Cytlalli, Martínez-Ibarra José Alejandro
Laboratorio de Entomología Médica, Departamento de Ciencias de la Naturaleza, Centro Universitario del Sur, Universidad de Guadalajara, Av. Enrique Arreola Silva 883, 49000, Ciudad Guzmán, Jalisco, México.
COFAA Grant Fellow, National School of Biological Sciences, National Polytechnic Institute, Mexico City, Mexico.
J Vector Ecol. 2019 Jun;44(1):173-178. doi: 10.1111/jvec.12341.
Chagas disease is one of the main vector-borne diseases in Latin America, including Mexico. Understanding the biological parameters of the triatomine species is a crucial first step in estimating the epidemiologic importance of each group. The aim of this study was to compare the biological fitness of Meccus pallidipennis (Stål), M. bassolsae (Alejandre, Nogueda, Cortez, Jurberg, Galvão, Carcavallo) (Hemiptera: Reduviidae: Triatominae) and their laboratory hybrids, by estimating six biological parameters in order to increase the knowledge of the potential role of triatomine hybrids in the transmission of Trypanosoma cruzi to reservoir hosts. Biological parameters related to lifespan, number of blood meals to molt, mortality for each instar, percentage of females at the end of the cycle, number of eggs laid, and hatching of eggs in four cohorts of 100 specimens of M. pallidipennis, M. bassolsae, and their laboratory hybrids were evaluated and compared. In four of the six studied parameters (accumulative mortality, the percentage of females, mean number of laid eggs, and egg hatching), the hybrid cohorts had better fitness results than the parental cohorts. The increase in hybrid fitness found in our study could lead to an increase in the epidemiologic risks caused by transmission of T. cruzi to humans.
恰加斯病是包括墨西哥在内的拉丁美洲主要的病媒传播疾病之一。了解锥蝽物种的生物学参数是评估每组锥蝽在流行病学上重要性的关键第一步。本研究的目的是通过估计六个生物学参数，比较苍白猎蝽（Stål）、巴萨尔猎蝽（Alejandre、Nogueda、Cortez、Jurberg、Galvão、Carcavallo）（半翅目：猎蝽科：锥蝽亚科）及其实验室杂交种的生物学适应性，以增加对锥蝽杂交种在克氏锥虫传播给储存宿主过程中潜在作用的认识。对与寿命、蜕皮所需吸血次数、各龄期死亡率、生命周期结束时的雌性百分比、产卵数以及100只苍白猎蝽、巴萨尔猎蝽及其实验室杂交种四个样本组的卵孵化率相关的生物学参数进行了评估和比较。在六个研究参数中的四个（累积死亡率、雌性百分比、平均产卵数和卵孵化率）方面，杂交样本组的适应性结果优于亲本样本组。我们研究中发现的杂交种适应性增加可能会导致克氏锥虫传播给人类所造成的流行病学风险增加。
