Pech-May A, Peraza-Herrera G, Moo-Llanes D A, Escobedo-Ortegón J, Berzunza-Cruz M, Becker-Fauser I, Montes DE Oca-Aguilar A C, Rebollar-Téllez E A
Instituto Nacional de Medicina Tropical, Ministerio de Salud de la Nación, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Puerto Iguazú, Misiones, Argentina.
Centro Regional de Investigación en Salud Pública, Instituto Nacional de Salud Pública, Tapachula, Chiapas, Mexico.
Med Vet Entomol. 2016 Sep;30(3):310-20. doi: 10.1111/mve.12169. Epub 2016 Apr 4.
Localized cutaneous leishmaniasis represents a public health problem in many areas of Mexico, especially in the Yucatan Peninsula. An understanding of vector ecology and bionomics is of great importance in evaluations of the transmission dynamics of Leishmania parasites. A field study was conducted in the county of Calakmul, state of Campeche, during the period from November 2006 to March 2007. Phlebotomine sandfly vectors were sampled using Centers for Disease Control light traps, baited Disney traps and Shannon traps. A total of 3374 specimens were captured in the two villages of Once de Mayo (93.8%) and Arroyo Negro (6.1%). In Once de Mayo, the most abundant species were Psathyromyia shannoni, Lutzomyia cruciata, Bichromomyia olmeca olmeca and Psychodopygus panamensis (all: Diptera: Psychodidae). The Shannon trap was by far the most efficient method of collection. The infection rate, as determined by Leishmania mexicana-specific polymerase chain reaction, was 0.3% in Once de Mayo and infected sandflies included Psy. panamensis, B. o. olmeca and Psa. shannoni. There were significant differences in human biting rates across sandfly species and month of sampling. Ecological niche modelling analyses showed an overall overlap of 39.1% for the four species in the whole state of Campeche. In addition, the finding of nine vector-reservoir pairs indicates a potential interaction. The roles of the various sandfly vectors in Calakmul are discussed.
局部皮肤利什曼病在墨西哥许多地区，尤其是尤卡坦半岛，是一个公共卫生问题。了解媒介生态学和生物学特性对于评估利什曼原虫寄生虫的传播动态至关重要。2006年11月至2007年3月期间，在坎佩切州的卡拉科尔县进行了一项实地研究。使用疾病控制中心的诱虫灯、诱饵迪斯尼诱捕器和香农诱捕器对白蛉媒介进行采样。在“五月十一日”村（93.8%）和阿罗约内格罗村（6.1%）的两个村庄共捕获了3374个标本。在“五月十一日”村，最常见的物种是香农伪白蛉、十字形罗蛉、奥氏双色白蛉和巴拿马按蚊（均为：双翅目：毛蠓科）。香农诱捕器是迄今为止最有效的采集方法。通过墨西哥利什曼原虫特异性聚合酶链反应测定，“五月十一日”村的感染率为0.3%，感染的白蛉包括巴拿马按蚊、奥氏双色白蛉和香农伪白蛉。不同白蛉物种和采样月份的人叮咬率存在显著差异。生态位建模分析表明，在整个坎佩切州，这四个物种的总体重叠率为39.1%。此外，发现九对媒介-宿主配对表明存在潜在相互作用。文中讨论了卡拉科尔各种白蛉媒介的作用。
