Further studies on the relationship between hyoscyamus virus 3 and the aphis Myzus persicae (Sulz.) with special reference to the effects of fasting

Abstract

The green peach aphid is much more likely to transmit the Hyoscyamus virus 3 if made to fast immediately before being fed on the source of infection. Its efficiency as a vector increases rapidly during the first hour of fasting, but long periods of starving give but little further increase in infectivity. Infectivity is lost by the aphids after the cessation of infection feeding, and the rate of loss is probably more rapid than the rate at which the virus deteriorates in vitro.