Moloo S K, Sabwa C L, Kabata J M
International Laboratory for Research on Animal Diseases (ILRAD), Nairobi, Kenya.
Acta Trop. 1992 Aug;51(3-4):271-80. doi: 10.1016/0001-706x(92)90045-y.
Vector competence of Glossina pallidipes for pathogenic Trypanosoma species was compared to that of G. morsitans centralis. Cattle or goats were the hosts used to infect teneral tsetse, rabbits were used to maintain tsetse which were dissected on day 30. Mean infection rates of G. pallidipes and G. m. centralis by T. vivax isolated from a cow in Kenya were respectively 39.5 +/- 8.9% and 32.1 +/- 10.3% whilst for T. vivax isolated from a cow in Nigeria, they were 30.0 +/- 7.5% and 19.8 +/- 4.3%. Differences were not significant. Differences in infection rates between the sexes of flies were also not significant. Transmission capability to goats by either tsetse species was good for the two T. vivax isolates. Mean infection rates by T. congolense isolated from a lion in Tanzania were significantly lower in G. pallidipes (8.5 +/- 1.8%) than in G. m. centralis (22.5 +/- 2.0%). Males of either tsetse were more susceptible than females. Transmission rates to goats and mice by both tsetse species was 100%. G. pallidipes (3.5%) was less susceptible than G. m. centralis (25.1%) to T. congolense isolated from a cow in Nigeria, but transmission rates to goats and mice by either tsetse was 100%. Also, G. pallidipes (2.7 +/- 0.4%) was significantly less susceptible than G. m. centralis (18.4 +/- 1.1%) to T. b. brucei isolated from a hartebeest in Tanzania. Males of either tsetse species were more susceptible than females. Transmission rates to goats and mice by either tsetse was 100%. G. pallidipes (0%) was not susceptible to T. b. brucei isolated from a pig in Nigeria whilst G. m. centralis showed infection rate of 9.3%. When male G. pallidipes and G. m. centralis were fed every day for 27 days on a goat infected with this T. b. brucei from Nigeria, the infection rates were 8.7% and 20.2%, respectively. Transmission rates to mice by either tsetse species was 100%. In conclusion, G. pallidipes has a vector competence equal to that of G. m. centralis for T. vivax, whilst G. pallidipes has lower vector competence than G. m. centralis for T. congolense and T. b. brucei.
将致病锥虫物种的淡足舌蝇的媒介能力与中喙舌蝇的媒介能力进行了比较。使用牛或山羊作为宿主来感染羽化后的采采蝇，用兔子来饲养采采蝇，并在第30天进行解剖。从肯尼亚一头奶牛分离出的间日锥虫对淡足舌蝇和中喙舌蝇的平均感染率分别为39.5±8.9%和32.1±10.3%，而从尼日利亚一头奶牛分离出的间日锥虫，其感染率分别为30.0±7.5%和19.8±4.3%。差异不显著。不同性别采采蝇的感染率差异也不显著。两种采采蝇对山羊的传播能力对两种间日锥虫分离株都良好。从坦桑尼亚一头狮子分离出的刚果锥虫对淡足舌蝇的平均感染率（8.5±1.8%）显著低于对中喙舌蝇的感染率（22.5±2.0%）。两种采采蝇中的雄性比雌性更易感染。两种采采蝇对山羊和小鼠的传播率均为100%。淡足舌蝇（3.5%）对从尼日利亚一头奶牛分离出的刚果锥虫的易感性低于中喙舌蝇（25.1%），但两种采采蝇对山羊和小鼠的传播率均为100%。此外，淡足舌蝇（2.7±0.4%）对从坦桑尼亚一头转角牛羚分离出的布氏锥虫布氏亚种的易感性显著低于中喙舌蝇（18.4±1.1%）。两种采采蝇中的雄性比雌性更易感染。两种采采蝇对山羊和小鼠的传播率均为100%。淡足舌蝇（0%）对从尼日利亚一头猪分离出的布氏锥虫布氏亚种不敏感而中喙舌蝇显示出9.3%的感染率。当雄性淡足舌蝇和中喙舌蝇每天以感染了来自尼日利亚的这种布氏锥虫布氏亚种的山羊为食27天时，感染率分别为8.7%和20.2%。两种采采蝇对小鼠的传播率均为100%。总之，淡足舌蝇对间日锥虫具有与中喙舌蝇相当的媒介能力，而淡足舌蝇对刚果锥虫和布氏锥虫布氏亚种具有比中喙舌蝇更低的媒介能力。
