EFFECT OF PHYSIOLOGICAL CONDITION OF TICKS ON INTENSITY OF TICK-BORNE ENCEPHALITIS-VIRUS REPLICATION IN THEM

  • 1 January 1978
    • journal article
    • research article
    • No. 2,p. 232-238
Abstract
The features of tick-borne encephalitis (TBE) virus [isolated from mice] reproduction in Ixodes ricinus and Dermacentor andersoni ticks were studied in relation to the age of ticks, duration of fasting, feeding and conditions of keeping the ticks before and after the experiment. Parenteral infection of ticks at various intervals after molting showed that the most favorable conditions for reproduction, survival, transphase and transovarial transmission of the virus occurred when the virus was given to the ticks in the 1st days after the period of post-larval development followed by feeding the vectors on vertebrates. In this case, owing to increased metabolic activity and intensive organogenesis and histogenesis, the virus persisted in ticks in high titers till the moment of oviposition and penetrated into the egg batch. When the virus was inoculated into old exhausted females (8-18 mo.) virus titers in ticks were low and penetration of the virus into the egg batch was irregular.

This publication has 0 references indexed in Scilit: