ABSTRACT
Parasitic infection is still a serious public health problem in the world, especially in developing countries including Egypt. It represents a major cause of morbidity and mortality in childhood and among high-risk groups in most parts of the world. This study detected the prevalence of parasitic infection among school children in El-Wadi El-Gadded [the New Valley Governorate]. A total of randomly chosen 1615 students aged from 6-16 years, [771 males and 844 female] from 12 primary schools and 12 preparatory schools related to four centers [El Dakhala, El Farfra, Paris and Platt] from the New Valley Governorate. Each child was subject to: A questionnaire sheet, Urine examination through sedimentation methods, Stool examination using: Direct smear, Simple sedimentation method and Modified Ziehl-Neelsen Stain, Blood samples were collected randomly from 450 children and examined for Seropositivity of toxoplasmosis using [On-SiteToxoIgG/IgM Rapid Test-Cassette] and examination of hair and clothes for ectoparasites [lice]. The overall prevalence of parasites was [39.1%] among primary and preparatory school children. The helminthes were E. vermicularis [15.2% and 17. 1%]; A. lumbricoides [1.3% and 1.9%] and then H. nana [0.9% and 0.6%] and the protozoa were E. histolytica [14.1% and 13.2%], Giardia lamblia [3.8% and 309%], and then Cryptosporidium parvum [0.09%] and seropositivity of toxoplasmosis was in [3.0% and 2.7%] among primary and preparatory school children respectively. Mixed infection was in [0.4%] among primary school children. Head lice infestation was more prevalent among primary school children than preparatory school ones with a ratio [3.5% and 0.2%] respectively, was nil among males
ABSTRACT
The effect of four different photoperiods [darkness, 0 ; 8 ; 16 and continuous light, 24 hours per day] on the developmental stages and fecundity of Carpoglyphus lactis L. fed on wheat was studied under laboratory conditions of 25 +/- 2°C and 65 +/- 5% RH. The obtained results revealed no clear effect of photoperiod on the incubation period. It was 2.9 and 3.4 for male; 2.7 and 3.2 for female at darkness and continuous light respectively. The duration of each immature instar as well as the combined immature stages increased with increasing hours of light in both male and female. Different patterns were observed for longevity data for male and female. Male longevity was the longest [9.3 days] at continuous light [24 h.] whereas the greatest female longevity [15.4 days] was at complete darkness. The oviposition period as well as total average and mean daily deposited eggs decreased as the photoperiod increased