Population dynamics of some synanthropic fly species in different habitats in Buraydah, Saudi Arabia

The population dynamics of five synanthropic fly species, Chrysomyia rufifacies, Musca d. domestica, Muscina stabulans F., Sarcophaga haemorrohoidalis and Stomoxys calcitrans, were studied at three different habitats in Buraydah, Saudi Arabia. The chosen habitats were the slaughter house, the cattle market and the rubbish dumps. The number of flies caught per 20 sticky bands was taken monthly, for a whole year, as an index to the fly population at that habitat during that month. M. d. domestica was the most abundant fly species, it made up nearly 98%, 81%, and 75% of the total synanthropic fly population at the rubbish dumps, the cattle market and the slaughter house, respectively. It reached its maximum abundance in May and minimum occurrence in January. House flies were collected throughout the year and survived conditions seemed to be unsuitable for other species

study on phlebotomus species, the vectors of leishmaniasis in Gassim, Saudi Arabia

A total 935 adult sandflies were collected and identified from Buraydah, Gassim Region. Phlebotomus papatasi represented 79.6% of the total population, whereas P. sergenti represented 20.4% throughout two successive years [October 1990 - September 1992]. Apart from May, female sandflies outnumbered the males in both species. The seasonal incidence of both P. papatasi and P. sergenti seemed to be highly affected by climatic factors prevailed in the study area

Detection of free living amoeba [acanthamoeba polyphaga] in the air condition systems

Acanthamoeba polyphaga was found in the cooling towers of the air conditioning systems. This finding directs the attention to more studies on water and air conditioning systems of hospitals and dwellings and the relation to outbreaks of legionnaire's disease be caused by Legionella bacilli which complete its natural life cycle inside the Acanthamoeba

Evaluation of the intraoval precipitin reaction [IOP] for diagnosis of schistosomiasis

On using lypholized eggs of s. mansoni isolated from mice, and that of S. haematobium isolated fresh from man. IOP was not observed and the sensitivity of [COP] was less in the former than in the latter. The IOP reaction should be taken into account when the ovum precipitin test is employed for schistosomiasis serodiagnosis and seroepidemiology, as being more sensitive than the COP reaction

level of IgG and IgM in pneumocystis carinii infection

Sputum examination for detection of P. carinii can be substituted for more invasive techniques, especially in debilitated patients. There was an increase level of IgG and IgM in patients with P. carinii pneumonia [PCP] in the serum and sputum. But the frequency of these immunoglobulins among the general population limits their value in the diagnosis of pneumocystosis