Lima M M, Sarquis O
Laboratório de Eco-Epidemiologia da Doença de Chagas, Fundação Oswaldo Cruz, Avenida Brasil, 4365, Manguinhos, Rio de Janeiro 21045-900, Brazil.
Parasitol Res. 2008 Mar;102(4):797-800. doi: 10.1007/s00436-007-0823-1. Epub 2007 Dec 20.
Rhodnius nasutus, a triatomine species autochthonous in the Brazilian Northeast, is primarily associated with the Copernicia prunifera palm tree (Carnauba). For the first time, the colonization of this triatomine in another tree species is reported. To investigate the existence of an infected triatomine focus located in a periurban area of the county of Jaguaruana, Ceará, situated in the Brazilian Northeast, where soil is greatly altered and natural vegetation scarce, an entomological survey was performed. During 2 consecutive days in August 2006 and 4 in December 2006, with the aid of live-bait traps, nine C. prunifera palms and seven Licania rigida trees (Oiticica), among other typical trees of the region, were sampled. In April 2007, 13 L. rigida trees and five C. prunifera palm trees were newly sampled. Considering the three investigation periods, a total of 20 R. nasutus specimens in C. prunifera and 52 in L. rigida were captured, in all developmental stages, 12.5 and 20.7%, respectively, harboring T. cruzi-like protozoa. The authors suggest that environmental damages are facilitating the ability of this species to colonize other trees besides palms.
纳氏猎蝽是巴西东北部本土的一种锥蝽，主要与巴西棕榈（巴西蜡棕）有关。首次报道了这种锥蝽在另一种树种上的定殖情况。为了调查位于巴西东北部塞阿拉州雅瓜拉纳县城郊地区的一个受感染锥蝽疫源地的存在情况，该地区土壤变化很大且自然植被稀少，开展了一项昆虫学调查。在2006年8月连续两天以及2006年12月4天期间，借助活饵诱捕器，对9棵巴西棕榈和7棵硬毛杨桐树（奥蒂吉卡树）以及该地区其他典型树木进行了采样。2007年4月，新采样了13棵硬毛杨桐树和5棵巴西棕榈树。考虑到三个调查时期，在巴西棕榈中共捕获了20只纳氏猎蝽标本，在硬毛杨桐树中共捕获了52只，在所有发育阶段中，分别有12.5%和20.7%的个体携带类似克氏锥虫的原生动物。作者认为，环境破坏正在促使该物种除了棕榈树之外还能在其他树木上定殖。
