Abstract
The present investigation was carried out to survey the population fluctuation of some rodent species in different localities in El- Ibrahemia district, Sharkia Governorate. Result revealed that the rodent species trapped from the three different habitats are classified as follows: (A) The white bellied rat Rattus rattus frugivorus, (B) the grey bellied rat Rattus rattus alexandrinus, (c) the Norway rat Rattus norvegicus, (D) the house mouse Mus musculus and (E) the Egyptian spiny mouse Acomys cahrinus. The total number of rodent species in the houses during two successive years (2004-2005 and 2005 -2006) was 451 and 335 individuals, respectively. The white bellied Rattus rattus frugivorus was the most dominant species in this locality, while the total number of rodent species in the granaries during the same years was 115 and 120 individual, respectively. The white bellied rat Rattus rattus frugivorus was recorded the highest number of rodents. On the other hand, in poultry farm the total number of rodent species was 123 and 76 individuals during two successive years, respectively. The highest values of total number of rats were recorded during May 2006 (98 and 73 individuals respectively), when the mean of temperature was 25.7c during May 2005 and 2006, while the mean of relative humidity (RH) was 54.1 and 54.7%, respectively.
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