Roberts D, Kumar S
Department of Biology, Sultan Qaboos University, Al-Khod, Sultanate of Oman.
J Med Entomol. 1994 May;31(3):388-93. doi: 10.1093/jmedent/31.3.388.
Vehicle-mounted nets were used on 15 nights in northern Oman to collect 2,216 sand flies. The composition of the catch was compared with that of 100 sticky traps, which were used twice a month over a 15-mo period to collect 3,099 sand flies. Sticky trap catches showed no obvious seasonal change in abundance. The vehicle nets collected up to 260 flies per night, with a mean of 148. This compared with the catch of the 100 sticky traps, which had an overall mean of 115 flies per night. The vehicle nets collected seven species of sand flies (four Phlebotomus and three Sergentomyia). Phlebotomus alexandri Sinton, the presumed vector of visceral leishmaniasis in Oman, made up 29% of the catch. In contrast, the sticky traps collected mainly Sergentomyia spp., and P. alexandri was only 4% of the catch. Overall, catch of both methods had a sex ratio of 1:1, but both collected a higher proportion of female P. alexandri. The vehicle nets collected only a few blood-fed flies, the greatest number being 33 P. alexandri (8% of the females for this species). However, some females were collected at each stage of the gonotrophic cycle; the smallest number was in stage II. All the flies developing eggs beyond stage II had had a blood meal, so that there was no sign of autogeny in these species. Ten percent of the females were parous. The vehicle-mounted net placed on the side of the vehicle at 0.3 to 1.8 m above the ground caught a greater number of Sergentomyia clydei Sinton than an identical net mounted on top of the vehicle at 1.8 to 2.8 m, in which the rest of the species, including P. alexandri, mainly were caught.
在阿曼北部，车载网在15个夜晚用于捕获2216只白蛉。将捕获物的组成与100个粘性诱捕器的捕获物组成进行比较，粘性诱捕器在15个月的时间里每月使用两次，共捕获3099只白蛉。粘性诱捕器捕获的白蛉数量没有明显的季节性变化。车载网每晚最多捕获260只白蛉，平均为148只。相比之下，100个粘性诱捕器每晚的总体平均捕获量为115只白蛉。车载网捕获了七种白蛉（四种白蛉属和三种司蛉属）。阿曼内脏利什曼病的假定传播媒介亚历山大白蛉占捕获量的29%。相比之下，粘性诱捕器主要捕获司蛉属，亚历山大白蛉仅占捕获量的4%。总体而言，两种方法捕获的白蛉性别比均为1:1，但两种方法捕获的亚历山大白蛉雌性比例都更高。车载网只捕获到几只吸食过血液的白蛉，最多的是33只亚历山大白蛉（占该物种雌性的8%）。然而，在生殖营养周期的每个阶段都捕获到了一些雌性白蛉；数量最少的是第二阶段。所有发育到第二阶段以后的产卵雌性白蛉都吸食过血液，因此这些物种没有自生现象的迹象。10%的雌性白蛉已产过卵。安装在车辆侧面离地0.3至1.8米处的车载网捕获的克莱德司蛉比安装在车辆顶部1.8至2.8米处的相同网捕获的更多，而安装在车辆顶部的网主要捕获包括亚历山大白蛉在内的其他物种。
