Eaton D P, Diaz L A, Hans-Filho G, Santos V D, Aoki V, Friedman H, Rivitti E A, Sampaio S A, Gottlieb M S, Giudice G J, Lopez A, Cupp E W
Program in Ecology, Evolution, and Conservation Biology, University of Nevada-Reno, USA.
J Med Entomol. 1998 Mar;35(2):120-31. doi: 10.1093/jmedent/35.2.120.
Fogo selvagem is an autoimmune blistering skin disease that principally occurs among rural Brazilians living in geographically clumped disease foci. Exposure to hematophagous black flies possibly is related to the cause of the disease. We compared the occurrence, proportions, and richness of simuliid species immatures and the biting activity of adult females within a recently discovered, high prevalence focus of fogo selvagem, the Limão Verde Terena Reservation, to that of neighboring regions with no reported cases of fogo selvagem. Nine black fly species were collected from 12 stream sites during 5 trips to the fogo selvagem focus. The species showed longitudinal (upstream-downstream) trends in occurrence, proportions, and richness, and the abundance of simuliid immatures was greater at downstream sites. The most prevalent species at the focus, Simulium nigrimanum (Macquart), dominated the stream sites with highly abundant simuliid assemblages, and was the most common black fly in human bait collections. This species was absent or in very low numbers in neighboring valleys and villages that did not have cases of fogo selvagem.
野火病是一种自身免疫性水疱性皮肤病，主要发生在居住在地理上聚集的疾病疫源地的巴西农村居民中。接触吸血黑蝇可能与该病的病因有关。我们将野火病一个最近发现的高流行疫源地——利蒙·韦尔德·特雷诺保留地内蚋科物种幼虫的出现情况、比例和丰富度以及成年雌蝇的叮咬活动，与没有报告野火病病例的邻近地区进行了比较。在前往野火病疫源地的5次行程中，从12个溪流地点采集到了9种黑蝇。这些物种在出现情况、比例和丰富度上呈现出纵向（上游至下游）趋势，并且蚋科幼虫在下游地点更为丰富。疫源地最常见的物种——黑蚋（Macquart），在溪流地点中占主导地位，蚋科组合数量众多，并且是人类诱饵诱捕中最常见的黑蝇。在没有野火病病例的邻近山谷和村庄中，该物种不存在或数量极少。
