Katunguka-Rwakishaya E, Kabagambe E K
Department of Veterinary Medicine, Faculty of Veterinary Medicine, Makerere University, Kampala, Uganda.
Trop Anim Health Prod. 1996 May;28(2):151-7.
The population structure, feeding state and distribution of tsetse of Glossina fuscipes fuscipes species in Ssugu parish of Mukono district, south-east Uganda were investigated. Tsetse caught with pyramidal traps were counted, sexed and dissected for age grading. It was observed that most tsetse were caught in valley habitats in the dry season, but the distribution was almost uniform within the parish in the wet season. The apparent density and prevalence of blood meals in tsetse fluctuated in different months. There were more males with a fresh blood meal than females (P < 0.05). In the population there was a preponderance of young tsetse of less than 60 days. There were significantly more teneral males than teneral females (P < 0.05). In all months the percentage of females was higher than that of males and ranged between 51.1% to 64.6 per cent. The epidemiological implications of these findings are that the risk of contracting trypanosomosis is high during the period of uniform distribution; since this is associated with an increase in apparent density and therefore high man-tsetse-animal contact. Furthermore, these results have shown that it is possible to prevent increase in the population of tsetse by applying insecticides on animals and targets in September and early October, since recruitment in tsetse population follows the rains.
对乌干达东南部穆科诺区苏古教区的fuscipes fuscipes种采采蝇的种群结构、取食状态和分布进行了调查。对用锥形诱捕器捕获的采采蝇进行计数、鉴别性别并解剖以进行年龄分级。观察到大多数采采蝇在旱季的山谷栖息地被捕获，但在雨季教区范围内分布几乎均匀。采采蝇中血餐的表观密度和流行率在不同月份波动。有新鲜血餐的雄性采采蝇比雌性多（P<0.05）。种群中60天以下的年轻采采蝇占优势。羽化后未进食的雄性采采蝇明显多于羽化后未进食的雌性采采蝇（P<0.05）。在所有月份中，雌性的百分比均高于雄性，范围在51.1%至64.6%之间。这些发现的流行病学意义在于，在分布均匀的时期感染锥虫病的风险很高；因为这与表观密度增加相关，因此人与采采蝇及动物的接触频繁。此外，这些结果表明，在9月和10月初对动物和目标喷洒杀虫剂有可能防止采采蝇种群增加，因为采采蝇种群的补充与降雨有关。
