Selection of refractory and permissive strains of Aedes triseriatus (Diptera: Culicidae) for transovarial transmission of La Crosse virus
Selection of refractory and permissive strains of Aedes triseriatus (Diptera: Culicidae) for transovarial transmission of La Crosse virus
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DOI：
10.1093/jmedent/36.6.671
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发表时间：
1999-11-01
影响因子：
2.1
通讯作者：
Black, WC
中科院分区：
文献类型：
--
作者：
Graham, DH;Holmes, JL;Black, WC
The genetic basis of transovarial transmission of La Crosse virus in Aedes triseriatus (Say) was investigated through selection experiments on 2 mosquito strains. One strain was subject to selection for transovarial transmission refractoriness, the other for permissiveness to transovarial transmission. Response to selection for a low filial infection I ate was rapid, decreasing from 18 to 3% in 3 generations. However, no response to selection for permissiveness was observed in the other strain; the average filial infection rates through 4 generations fluctuated between 25 and 40%. By contrast, the transovarial transmission rate in both strains showed a consistent response to selection in both directions. These patterns are consistent with a model in which transovarial transmission is controlled by a single genetic locus and permissiveness is conditioned by dominant alleles; whereas the filial infection rate is nongenetic and influenced by stochastic factors in the mosquito and virus.
