2024-03-29T16:33:29Z
https://eajbse.journals.ekb.eg/?_action=export&rf=summon&issue=3515
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
2090-0783
2090-0783
2009
1
1
Effect of extrinsic incubation temperature on borrelial infection in various organs of Ornithodoros (O.) savignyi
Nadia
Helmy
Nawal
Shanbaky
Adel
Abd Elmohsen
Amira
Abd-ElHamid
Dissemination levels of Borrelia sp. isolated from a natural population of Ornithodoros savignyi in Egypt were assessed in various organs of the infected female tick reared at three different temperatures. Results of the present investigation showed that the extrinsic incubation temperature at which the infected tick was reared (EI) was crucial in affecting borrelial dissemination levels in different organs including gut, salivary glands, coxal organ, ovaries and hemolymph. The increase of EI from 17oC to 27oC and 37oC increased the infection rates (IRs) and mean number (no.) of spirochetes localized in different organs. Also, it enhanced the appearance, prolonged persistence and delayed disappearance of spirochetes in most of the organs tested throughout the period of study (90 days after infective meal).
borrelial infection
2009
12
01
1
9
https://eajbse.journals.ekb.eg/article_16458_2dbcfb0345f455094f71320e535e8ac6.pdf
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
2090-0783
2090-0783
2009
1
1
The infection of freshwater fishes with three species of Henneguya in Qena, Upper Egypt
Soheir
Rabie
Nadia
Mohammed
Abdel-Nasser
Hussein
Nermean
Hussein
It is so for the first time to do general surveyof protozoan parasites that infect freshwater fishes in Qena Province.The total number of fishes examined were 581 belonging to 10 familiesrepresented by 14 Species during the period from January 2006 to May 2008 . Threespecies of Henneguya were recorded from two species of fishes. The firstspecies is suggested to be a new one called Henneguya mandouri sp.nov. Thesecond species is Henneguya assuiti, Mandour etal., 1988 and the third one is Henneguya nilotica, Marwan, 1998.
Freshwater fishes
Henneguya mandouri sp.nov
Henneguya assiuti
Henneguya nilotica
Qena
Upper Egypt
2009
12
01
11
19
https://eajbse.journals.ekb.eg/article_16459_42743669ee244e40202d900b2d9ad1f7.pdf
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
2090-0783
2090-0783
2009
1
1
Effect of extrinsic incubation temperature on transstadial and transovarial transmission of Borrelia sp. in Ornithodoros (O.) savignyi and infectivity to vertebrate host.
Nawal
Shanbaky
Nadia
Helmy
Adel
Abd Elmohsen
Amira
Abd-Elhamid
Effects of three extrinsic incubation (EI) temperatures on vector competence of Ornithodoros savignyi to Borrelia sp. isolated from a natural population of the tick in Egypt were investigated. The EI temperature influenced the efficiency of Borrelia sp. transmission by the female O. savignyi to hamsters. An EI temperature for 27oC was optimum for successful transmission of Borrelia sp. where the highest infection rates (IRs) in hamsters occurred. Generally, the IRs in hamsters decreased by lowering the EI temperature to 17oC or rising it to 37oC in each of the corresponding experimental cases (number and postinfection period of the tick feeding per hamster) tested.
Ornithodoros savignyi kept at 27oC and 37oC maintained borrelial infection transstadially from nymph 1 to 7 and adults. The transstadially infected stages transmitted the spirochetes to hamsters with higher IRs at 27oC than 37oC. Transovarial transmission of Borrelia sp. occurred during the first and second (at higher rates) gonadotrophic cycle in the infected female ticks kept at 27oC and 37oC. However, no molting or oviposition occurred at 17oC.
Temperature
Borrelia
Ornithodoros
vertebrate
2009
12
01
21
29
https://eajbse.journals.ekb.eg/article_16460_09eb641c661625e295e64acc6a90fe3f.pdf
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
2090-0783
2090-0783
2009
1
1
Phlebotomine sand flies (Diptera: Psychodidae) in different localities of Al-Baha province, Saudi Arabia
Said
Doha
A spot survey was conducted to study the sand fly fauna in Al-Baha province, Saudi Arabia. Six sand fly species belonging to the genus Phlebotomus and three to the genus Sergentomyia were identified. Phlebotomus bergeroti was the predominant species being recorded in all sites and represented 54.4 % of the identified flies. The remaining flies were P. sergenti (14.8%), P. arabicus (13.2 %), P. alexandri (5.3%), S. tiberiadis (4.9%), S. antennata (2.4%), S. clydei (2.1%), P. papatasi (1.5%), and P. orientalis (1.3%). The overall number of males collected (3458) was more than that of females (2637). Within the study period (April to December, 1995), sand flies were more active during the period from July to September. The collected fly species displayed different peaks between June and November. No Leishmania infection was found in any of the dissected females.
sand flies
Saudi Arabia
2009
12
01
31
37
https://eajbse.journals.ekb.eg/article_16461_e8109f042660644a78b0ff4a245120ae.pdf
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
2090-0783
2090-0783
2009
1
1
Spatial distribution and abundance of culicine mosquitoes in realtion to the risk of filariasis transmission in El Sharqiya Governorate, Egypt
Yousrya
Abdel-Hamid
Mohamed
Soliman
Kamilia
Allam
Culicine mosquito surveys were conducted in El Sharqiya Governorate (Nov. 2007 - May 2008) in some villages (cities) representing the different districts. Totally 6 species were reported: Culex (Culex) pipiens Linnaeus, Cx. (Cx.) perexiguus Theobald, Cx. (Cx.) antennatus (Becker), Cx. (Barraudius) pusillus Macquart, Cx. (Cx.) sinaiticus Kirkpatrick and Ae. (Ochlerotatus) detritus (Haliday). The last two were identified as newly distributed species. Culex pipiens, the main filariasis vectorwas the predominant or the most common species (ca.88% larvae and 47% adults, p<0.01). For the common species, the following were examined: (1) the type and characteristics (temperature and pH) of the breeding habitats and their relation to the larval density and (2) the relation of adult indoor density and indoor and outdoor temperature and RH. The AMRAD-ICT Filariasis card Test was used to detect the Wuchereria bancrofti antigen in the Finger prick blood samples. Filariasis cases (0.4%, 11/ 2504) were detected in six out of the fifteen districts. The highest infection rate (2.4%) was reported in the 10th of Ramadan, a new settlement area. The cases were associated with the abundance of Cx. pipiens adults (ca. 40- 60% of the collected adults). Digital maps showing the spatial distribution of mosquito species and filariasis cases were generated. Such maps will provide the authorities with more information about the disease risk areas that would assist in the control activities.
Culicine mosquitoes-Spatial distribution-Abundance-Filariasis-El Sharqiya Governorate-Egypt
2009
12
01
39
48
https://eajbse.journals.ekb.eg/article_16462_73c70fc8fa84d43b2dd7aa672622f7a8.pdf