A Strain of Serratia marcescens Pathogenic for Larvae of Lymantria dispar : Infectivity and Mechanisms of Pathogenicity

The ED,?, of a strain of Serratia marcescens for microinjected instar III and IV gypsy moth larvae was 7.5 and 14.5 viable cells, respectively. Percentage and rate of mortality were found to be highly variable among replicates of the same instar and between instars in free-feeding bioassays. Mortality in second instar larvae occurred before ecdysis, whereas… CONTINUE READING