Patrican L A, DeFoliart G R
Am J Trop Med Hyg. 1987 May;36(3):648-52. doi: 10.4269/ajtmh.1987.36.648.
Venereal infection rates of Aedes triseriatus females mated to males transovarially infected with La Crosse virus were determined in 6 cage-mating trials. In trials 1-4, venereal infection rates averaged 46% and 45% in F2 females bloodfed 6-8 hr before and 7 days after exposure, respectively, to transovarially-infected males. These rates were similar to rates previously reported only in mosquitoes receiving a bloodmeal 6-8 days prior to mating. Lower rates (24%-31%) were obtained using F4 and F7 generation mosquitoes in trials 5B and 6. In most trials, oral and transovarial transmission rates by venereally infected females were less than 25%. In trial 5B, however, the transovarial transmission rates reached 60% and 94% in the second and third ovarian cycles, respectively, with filial infection rates of 46% and 65%, respectively. The oral transmission rate in this trial reached 38% after 32 days. LAC virus was not detected in first ovarian cycle progeny. It is concluded that higher venereal infection rates must be found and/or first ovarian cycle progeny shown to become infected, before venereal transmission can be considered to make more than a modest contribution to offsetting the erosion of virus prevalence during TO transmission.
在6次笼内交配试验中，测定了与经卵感染拉克罗斯病毒的雄蚊交配的三带喙库蚊雌蚊的性传播感染率。在试验1 - 4中，分别在接触经卵感染雄蚊前6 - 8小时和接触后7天吸食血液的F2代雌蚊中，性传播感染率平均分别为46%和45%。这些比率与之前仅在交配前6 - 8天吸食血液的蚊子中报道的比率相似。在试验5B和6中，使用F4和F7代蚊子获得了较低的比率（24% - 31%）。在大多数试验中，性传播感染雌蚊的经口传播率和经卵传播率均低于25%。然而，在试验5B中，在第二和第三个卵巢周期中，经卵传播率分别达到60%和94%，子代感染率分别为46%和65%。该试验中32天后经口传播率达到38%。在第一个卵巢周期的子代中未检测到拉克罗斯病毒。得出的结论是，在性传播被认为能对抵消经卵传播期间病毒流行率的下降做出较大贡献之前，必须发现更高的性传播感染率和/或证明第一个卵巢周期的子代被感染。
