الفهرس 
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Abstract
The surveyed rodents in animal farms at Salah Eldeen village, Minia district, Minia Governorate were: Rattus rattus frugivorous, Rattus norvegicus and Mus musculus. Ectoparasites associated with these rodents were: Louse, Polyplax spinulosa; Flea Pullex irritans and different mites (Ornithonyssus bacoti , Glycyphagus sp., Myobia murismusculi, Dermanssus gallinae, Liponyssoides sanguineus and Cheyletiella parasitivorax). The mites, Ornithonyssus bacoti , Glycyphagus sp.and Cheyletiella parasitivorax were detected with R. r. frugivorous and R. norvegicus and disappeared with M.musculus,. While Myobia murismusculi and Dermanssus gallinae were recorded with the all surveyed rodents. Fleas were recorded with R. r. frugivorous and M. musculus and disappeared with R. norvegicus. The louse Polyplax spinulosa also was found with R. r. frugivorous and M. musculus and didn’t observe on R. norvegicus. Lice were disappeared with R. norvegicus.
As for the surveyed data of rodents and their ectoparasites at Shosha animal farms in Samalote district, during 2017 &2018, two rodent species were detected in Shosha animal farms they were Rattus r. frugivorus and R. norvegicus. The detected ectoparasites accompanying with R. r. frugivorus were the lice, Polyplax spinulosa and four mite, they were O. bacoti; Glycyphagus sp.; M. murismusculi and C. parasitivorax. These mites were recorded also with R. norvigicus while P. spinulosa was disappeared with R. norvegicus.
II-Rodent and their ectoparasites populations are key components of animal’s farms production in Egypt and all world. However, their population dynamics and the factors affecting their abundance are still not well understood. We analyzed two species of rodents and their ectoparasite community’s composition: their abundance, periods of activity in a livestock farm production at Shoshah district, Minia Governorate, Egypt during two consecutive seasons 2017 and 2018. We analyzed the seasonal variations during activity periods of Rattus rattus frugivorous and Rattus norvegicus, and their associated ectoparasites with three weather factors i.e., Maximum biweekly mean temperature, Minimum biweekly mean temperature as well as biweekly mean relative humidity as significant drivers of the rodent and their associated ectoparasite presence. Results showed that the biweekly fluctuations of weather factors seem to be mostly reaction wards conditions in altering the activity of both the rodents and their associated ectoparasites. The preliminary effect of each weather factor was determined by simple correlation ” r”. The simultaneous effect of each factor and the combined effect of the three weather factors were determined by adopting the ”C- multipliers” formula. Results indicated that both species had three periods of activity in the two seasons of study and four and five periods of activity of the ectoparasites on R. rattus frugivorous and R. norvegicus, respectively. The highest variation in rodents population was observed on the date 12 March and 10th September for the two species respectively. Also, a significant positive and negative correlation between the climatic conditions and the population activity of the two rodents and their ectoparasites is dependent on the period of the activity. The combined effect of the three weather factors on the fluctuation of population activity of the two species of rodents was ranged from 78.9 to 98.03% and from 55.31 to 99.11% for R. rattus frugivorous, R. norvegicus during the three periods of activity for the two species respectively through the two years of study. The simultaneous effect of the three tested weather factors on the fluctuation of population activity of rodents and their parasites were varied through periods of activity. The temperature and relative humidity were two key factors that influenced the seasonal fluctuation of rodents and ectoparasites. Diversity index (H′), equitability % of the rodents and their ectoparasites community were varied according to weather factors. The results may help the researchers in designing a comprehensive pest management program and prediction models for the rodents to restrict their further spread at livestock farms production in this newly reclaimed area.