ABSTRACT
The abundant rodent species in Ismailia Governorate were R.r.frugivorous [70%], R. norvegicus [24.8%], R.r. alexandrinus [2.7%], Nesokia indica [1.9%] and N. musculus [0.6%]. The highest indices were 0.14, 0.464, 0.03, 0.027 and 0.008 respectively during September, December, October [1983], February and June [1984]. Rodent densities in the five sampled areas were 25.8% in Ismamix Factory, 22.5% in Serabium Village, 20% in Forage Factory, 16.7% in Macaroni Factory and 15% in Abo-Atwa Village. The highest density of pregnancy rate of R. norvegicus was 100% during November and the lowest was 25% during October. For R.r. frugivorous the highest was 50% during November and the lowest was 25% during both September and December. The, mean number of embryos for R. norvegicus and R.r. frugivorous were 8.7 and 7.9 respectively. The average maximum number were 11 and 9.5 respectively