Mantilla Juan S, Matta Nubia E, Pacheco M Andreína, Escalante Ananias A, González Angie D, Moncada Ligia I
Departamento de Biología, Universidad Nacional de Colombia, Bogotá, Colombia.
J Parasitol. 2013 Aug;99(4):662-8. doi: 10.1645/12-138.1. Epub 2013 Mar 21.
This study reports a broadening of the altitudinal range and a new host for Plasmodium (Haemamoeba) lutzi in Colombia. The study was conducted in the city of Bogotá, located in the Eastern Cordillera of Colombia at 2,560 m asl (meters above sea level) with an average annual temperature of 15 C. In total, 156 specimens of birds belonging to 25 species and 14 families were captured using mist nets. The blood samples were collected through venipuncture and analyzed by light microscopy. Plasmodium (H.) lutzi was only found in 2 individuals of Turdus fuscater (Great Thrush). This parasite has previously been reported in Aramides cajaneus (before: Aramides cajanea) (Grey-Necked Wood Rail), a bird found in the lowlands of Brazil, Venezuela, and Colombia. This finding provides evidence for a broad host range for P. lutzi that include 2 different orders, Gruiformes and Passeriformes, and also altitudinal expansion of its distribution. The blood stages were compared with the parasite's original descriptions, and the sequence of the parasite's mitochondrial genome (mtDNA) confirms that P. lutzi is a sister taxa of Plasmodium relictum, as previously proposed.
本研究报告了哥伦比亚疟原虫（血变形虫属）卢氏疟原虫的海拔分布范围扩大以及新宿主。该研究在哥伦比亚东部科迪勒拉山脉海拔2560米处的波哥大市进行，年平均气温为15摄氏度。总共使用雾网捕获了属于25个物种、14个科的156只鸟类标本。通过静脉穿刺采集血样，并进行光学显微镜分析。仅在2只乌鸫（大画眉鸫）个体中发现了卢氏疟原虫。此前曾在巴西、委内瑞拉和哥伦比亚低地发现的一种鸟类——灰颈林秧鸡（之前名为：灰颈林秧鸡）中报道过这种寄生虫。这一发现为卢氏疟原虫广泛的宿主范围提供了证据，其宿主包括2个不同的目——鹤形目和雀形目，同时也证明了其分布的海拔范围扩大。将血液阶段与该寄生虫的原始描述进行了比较，并且该寄生虫线粒体基因组（mtDNA）的序列证实，如之前所提出的，卢氏疟原虫是残疟原虫的姐妹分类群。
