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experimental transovarial transmission of st. louis encephalitis virus by culex and aedes mosquitoes.colonized and field-collected female culex tarsalis, infected with st. louis encephalitis, (sle) virus by intrathoracic inoculation or by feeding on a viremic host, transmitted virus to their f1 adult and/or larval progeny when reared at 18(+/- 1) degree c but not when reared at 27(+/- 1) degrees c. the minimal infection rates (mir) for different populations of cx. tarsalis ranged from 1:32 to less than 1:250 (mean = 1:121) for larval progeny and from 1:32 to less than 1:1, 989 (mean = 1:1,571) ...19846696174
effect of rearing temperature on transovarial transmission of st. louis encephalitis virus in mosquitoes.female aedes albopictus and aedes epactius infected by inoculation with st. louis encephalitis (sle) virus transmitted virus transovarially to their f1 progeny. with ae. epactius, minimal infection rates (mir) in f1 larvae were similar for progeny reared at 18 (+/- 1) degree c or 27 (+/- 1) degree c, whereas, mir's were significantly higher in f1 adults reared at 18 degrees c, than they were in f1 adults reared at 27 degrees c. use of different strains of sle virus appeared to influence transova ...19807435796
effect of the anesthetizing agent triethylamine on western equine encephalomyelitis and st. louis encephalitis viral titers in mosquitoes (diptera: culicidae).triethylamine (tea) is a chemical compound that provides an effective means to anesthetize mosquitoes. the mosquitoes remain alive but are incapacitated for several hours; they do not recover following treatment. there was no effect on the titers of infectious virus recovered from western equine encephalomyelitis or st. louis encephalitis virus-infected culex tarsalis coquillett and aedes dorsalis (meigen) that were anesthetized with tea prior to storage at -70 degrees c. furthermore, tea had no ...19902280383
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