@article { author = {Mostafa, Osama}, title = {Effect of salinity and drought on the survival of Biomphalaria arabica, the intermediate host of Schistosoma mansoni in Saudi Arabia}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {1-6}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16017}, abstract = {The effect of salinity and drought as twoimportant abiotic factors  on thesurvival of Biomphalaria arabica, the intermediate host of Schistosomamansoni in Saudi Arabiawas studied in the laboratory. Saudi B. arabica snails were collectedfrom freshwater bodies in Abha, Asser district, Saudi Arabia.  Snails were exposed to ten concentrationsofSodium Chloride as follow: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10‰. In addition, snailswere exposed to a series of Sodium Chloride concentrations lie between theconcentration that produced 100% mortality and the concentration lies previousto it. In drought experiments, the snails were exposed to complete dryness for12, 24, 36 and 48 hours and the snails in moist soil were examined daily forfifteen days.   The results revealed thatB. arabicasnails remain alive to 5‰ NaCl concentration and 100%mortality occurred at 7.2‰ of NaCl concentration. On the other hand, theability of thesnails to resist the complete dryness appeared to belimited, since 100% mortality was achieved after 36 hours in absence of lettuceleaves and after 48 hours in the presence of lettuce leaves.  The snails in moist soil provided with freshlettuce leaves remain survive to 15 days without any death. In the case ofsnails in the moist soil without fresh lettuce leaves, the survival wasunaffected until 10th day post-exposure, while further increases inexposure period resulted in reductions in survival up to 50% for snails exposedfor 15 days. The present investigation declared that B. arabicahasa great resistance to salinity increase and this may be explain why B.arabica has a great abundance in KSA. However, the ability of B. arabicasnail to resist the dryness appeared to be limited.}, keywords = {salinity,drought,Survival,Biomphalaria arabica,Schistosoma mansoni,Saudi Arabia}, url = {https://eajbsz.journals.ekb.eg/article_16017.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16017_e9a505fa063e0f56d30e6e04fdfefa2b.pdf} } @article { author = {EL Sayyad, Hasan and Mostafa, Amna and Kamal, Zainab}, title = {The efficiency of Trifolium pratense seed extract against the deleterious effects caused by nicotine in the liver of rat}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {7-27}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16018}, abstract = {The aim of this study was to determine the adverse effects of maternal nicotine treatment during pregnancy and on rat liver of newborns. Also to determine a protective effect of Trifolium Pratenseseed extract against the deleterious effects of nicotine. All groups were treated from the 6th day of gestation till parturition. The dams and their newborns were sacrificed and piece of liver from each subjected to the histological studies. The morphological findings of the newborns revealed marked signs of retardation in growth with malformations including superficial haematoma, shortened neck region, kinky tail, uni-and bilateral deformity of both fore and hind limbs and abnormal skin. The histopathological studies on the liver of the maternal nicotine treated and their newborns revealed disruption of hepatic cords arrangement. Blood sinusoids were dilated. The hepatic tissue exhibited inflammatory cells with signs of early cellular granulomatous lesions. Some hepatocytes obliterated and others with karyolysis nuclei. Kupffer cells become hypertrophied and dispersed throughout the hepatic cords. Fatty vacuoles and infiltrations were detected in many of the hepatocytes. The magnitude of these changes was dose dependent. TPSE supplementation was found to ameliorate an prevent the adverse effects of maternal nicotine treatment morphologically and histologically.     }, keywords = {Trifolium Pratense seed (TPSE) – Liver – Mother Rat – Nicotine – Newborns}, url = {https://eajbsz.journals.ekb.eg/article_16018.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16018_d6bab431ffa116bc818368cb0bb46378.pdf} } @article { author = {Sallam, Gihan and Abd El-Azim, Nahla and Abd-Elaal, Mohafez}, title = {Seasonal occurrence of spiders (Araneida) in open and green house fields of cucumber and pepper in Egypt}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {29-36}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16019}, abstract = {Spiders found in open and green houses fields of two vegetables (cucumber and pepper) were studied during the cultivation season 2007 and 2008 at Giza region. The obtained data proved that the number of collected spiders associated with cucumber in green house were nine families. Five families of insect pests were recorded and only one mite family, Tetranychidae. Considering the population of the collected spiders and their associated insect and mite pests, the highest total number of these spiders on cucumber plants was recorded during January and then decreased reaching to the lowest population during June. The highest population of insect pests was determined during April while the lowest level of the population was recorded during February. June was the month showed the highest abundance of the spider mites while the lowest population was noticed during January and February. The same spider families were recorded in green houses and in the open field of cucumber and the number of collected individuals were clearly lower than those of green house. April had the highest number of spiders which rapidly decreased reaching to the lowest abundance during May.}, keywords = {Spiders,Seasonal Occurrence,Cucumber,pepper,Tetranychidae,insects}, url = {https://eajbsz.journals.ekb.eg/article_16019.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16019_999b4b0d638b71a273ba11d0827dfbd1.pdf} } @article { author = {Shetaia, Sebay and Ismail, Shehate and Abdel-Kader, Samah}, title = {Survey, population dynamics and importance value of certain land snail species infesting different crops in sharkia governorate}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {37-43}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16020}, abstract = {Survey, population dynamics and importance value of certain land snail species infesting some vegetable and field crops as well as fruit trees ware determined at some localities in Sharkia Governorate. Results revealed that the glassy clover snail Moncha. cartusiana (Muller) and the amber snail, Succinea. putris (linues) were surveyed at Awlad- Sakr and Abo-Kapeer counties. M. cartusiana snails were found with higher density than S. putris. The majority of the examined crops were found with heavy infestation with M. cartusiana snail while S. putris were recorded with moderate or light infestation in the examined localities. Regarding population dynamics, it found that M. cartusiana snail was recorded with high density at the tested winter crops during spring months (March, April and May) as compared with winter or autumn months. Finally, when importance value was determined, it found that frequency occurrence and population density gave different results. The land snail species can be arranged descedingly,according to its importance values as follow: E. vermiculata>, M. cartusiana >, C. acuta, > H. vestalis. It may be useful to combine frequency of occurrence, population density and biomass in the form of importance value.}, keywords = {Survey,land snail,Sharkia}, url = {https://eajbsz.journals.ekb.eg/article_16020.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16020_4cc146d49fc336bbef5af6bd9c3757c0.pdf} } @article { author = {M., Zowail and H., Khater and M., EL-Asrag}, title = {Protective effect of green tea extract against cytotoxicity induced by enrofloxacin in rat}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {45-64}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16021}, abstract = {Enrofloxacin is bactericidal and has excellent activity against both Gram-positive and Gram-negative pathogens.120 male and female adult albino rats (Rattus norvegicus) were allotted among three groups. The animal were given daily 75mg/kg of enrofloxacin intraperitonealy followed by injection  of green tea extract 1%,1.5% and 3% for ten days. Various Structural and numerical chromosomal aberrations in bone marrow cells; mitotic activity and sperm head abnormality were recorded, quantitated, and statistically analyzed. Also DNA extraction and apoptosis detection in liver, kidney, and spleen was done; in addition to RNA damage was detected in lysate tissues. The intensity of apoptotic bands located at 200 b p; 400b p ; 600 b p; 800 b p and intact DNA measured by software Gel Pro program as maximum optical density values. Enrofloxacin had adverse effect on chromosomal and sperm head structure, also it induceapoptosis, necrosis and decrease total RNA in rat tissues. Green tea extract attenuate the enrofloxacin-related toxic effects. The most potent dose of Green tea extract was1% and the less effective was 3%.}, keywords = {Enrofloxacin,green tea extract- chromosomal aberrations- sperm- DNA- RNA- liver-kidney- spleen}, url = {https://eajbsz.journals.ekb.eg/article_16021.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16021_246ee0fd7da2122691ad637bb4cfdca3.pdf} } @article { author = {Abrenica-Adamat, Liza and Torres, Mark and Barrion, Adelina and Dupo, Aimee Lynn and Demayo, Cesar}, title = {The influence of prey on size, capture area and mesh height of the orb-web of the garden spider, Argiope aemula (Walckenaer, 1841) (Araneaea: Araneidae)}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {65-71}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16022}, abstract = {The orb-web garden spider Argiope aemula (Walckenaer, 1841) is a sit-and-wait predator.  It is argued that it can anticipate its future prey environment by detecting the presence of prey and adjusting their web building behavior accordingly. Therefore this study therefore investigates the influence of the different prey sizes and density of the capture area and mesh height of the webs constructed by the spider. In the laboratory, the spiders were given prey with different size and densities to determine their influence on the web architecture. Results show that spider individuals can increase or decrease the sizes of webs, capture area, and mesh height in response to prey size and density. Starved spiders constructed significantly larger webs than well-fed spiders.  In the absence of potential prey, the spiders constructed larger capture area. In the presence of small prey, spiders significantly constructed very narrow- meshed webs or tightly spaced capture spirals than the presence of larger prey but larger than in no prey regime. Similarly, the food deprived spiders spun small-spaced mesh height than well-fed spiders. The results of the present study demonstrate that spiders can manipulate their web architecture in response to different prey sizes and food availability (densities).}, keywords = {Argiope aemula (Walckenaer,1841),stabilimentum,web size,web capture area,web mesh height}, url = {https://eajbsz.journals.ekb.eg/article_16022.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16022_659d0cb83c00e8242440fd123c784dcd.pdf} } @article { author = {Abrenica-Adamat, Liza and Torres, Mark and Barrion, Adelina and Dupo, Aimee Lynn and Demayo, Cesar}, title = {Salient features of the orb-web of the garden spider, Argiope luzona (Walckenaer, 1841) (Araneae: Araneidae)}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {73-83}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16023}, abstract = {Many orb-web building spiders such as the garden spider Argiope luzona (Walckenaer, 1841) add conspicuous, white zigzag silk decorations termed stabilimenta onto the central portion of the webs. We studied the features of the web of this species by examining the stabilimenta, variations in form and quantity, presence and absence of stabilimentum and structure to be able to understand the nature of web building especially the factors that affect the nature of the built web. Field observations reveal that the stabilimenta of A. luzona are mainly discoid or cruciate which significantly depended on body size. Smaller individuals (body size < 0.6 cm) produced mainly discoid stabilimenta and larger individuals (body size > 0.6 cm) produced strictly cruciate stabilimenta that are 1-armed, 2-armed, 3-armed, 4-armed, or 5-armed.  Results also showed that the spiders’ body size was positively correlated to the number of stabilimentum arms, length of upper arms and to the length difference between upper and lower arms. Smaller individuals (body size :< 0.8 cm) built 2-armed and 4-armed only while larger individuals (body size :> 0.8 cm) built 1-armed, 2-armed, 3-armed, 4-armed and 5-armed stabilimenta.}, keywords = {stabilimentum,descriptive statistics,Argiope luzona,UTHSCSA Image Tool,arm asymmetry}, url = {https://eajbsz.journals.ekb.eg/article_16023.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16023_5362bc60f9cbfe48e52bd0b6ebe1e502.pdf} } @article { author = {Lanre, Olaitan}, title = {Sexual behaviour of university students in south west nigeria}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {85-93}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16024}, abstract = {The research investigated sexual behavior of Universitystudents in south west Nigeria.Four hundred and fifty (450) students selected from south west Nigeria FederalUniversities were used for the study. Questionnaires were used for datacollection and Chi-square (x) statistical method was employed to analyze dataand to test the hypothesis at a=0.05 level of significance. The researcherdeduced that all the variables considered had significant influence on thebehaviour of students towards sex. The results revealed that the behavior ofstudents towards sex was significantly influenced by their gender, culture,religion and educational status. Based on the outcome of this research, it was recommendedthat sexual program should be organized in our higher institutions to enlightenstudents on how to behave, so as to avert the nauseating problem of sexuallytransmitted infections as well as unwanted pregnancies.}, keywords = {Abstinence,Prostitution,Sexual behaviour,Sex Programs,university students,Venereal disease}, url = {https://eajbsz.journals.ekb.eg/article_16024.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16024_bb8554fffcaefa529f7f60d070939d72.pdf} } @article { author = {Yassin, Mohammad}, title = {Ectoparasites infesting rats at mostorod and bahteem Districts in Qualubiya Governorate, Egypt}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {95-101}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16025}, abstract = {The present research was carried out to study ecto-parasites infesting rats at Mostorod and Bahteem districts, Qaliubiya Governorate, during 2008 from may till October. Three rat species parasitized by ectoparasites, R. Rattus rattus having the highest number of parasites (54.5%). This was followed by R. norvegicus (29.5%), and Mus musculus (16.0%)  Although Mus musculus did not show a high infestation rate compared to Rattus rattus or R. norvegicus, it harbored seven species of parasites. Rattus rattus and R norvegicus had six species of ectoparasites recovered. The identified ectoparasites isolated from skin and hair of rats based on their morphological characteristics were: Polyplax spinulosa (43.6%),Laelaps nuttali (23.5%), Polyplax serrata (11.3), Ornithonyssius bacoti (10.3%), Dermanyssus sanguineus (7.3%),Dermanyssus americanus (2.8)and Rhipicephalus sanguineus. (1.3).The infestation rate of the parasite varied based on the rat species, R. rattus  having the highest infestation rate. Polyplax spinulosa parasitized predominantly R. rattus, while Laelaps nuttali and Ornithonyssius bacoti ware found mainly on R. norvegicus. Dermanyssus sanguineus was predominantly R. rattus, and Mus musculus, while Dermanyssus americanus was found mainly on R. rattus. Polyplax serrata was found on R. rattus R. norvegicus, and Mus musculus while Rhipicephalus sanguineus was only recovered on Mus musculus. Ectoparasite infestation was also influenced by the sex of the host, with male rats (73.7%) manifesting a significantly higher (p<0.05) infestation rate than female rats (26.3%).         All recovered ectoparasites were common parasites of rats. Infested rats near human habitations in the area warrant possible rodent-borne diseases among the residents thus, an investigation of the occurrence of rodent-borne diseases among the dwellers may provide epidemiologic pattern related to such diseases including vectors of zoonotic diseases.}, keywords = {ectoparasites,infesting rats,at mostorod and bahteem}, url = {https://eajbsz.journals.ekb.eg/article_16025.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16025_f6c51feb558bd59749b019412a5a1ea2.pdf} } @article { author = {yassin, Mohammad and Ashmawy, Zakia and Hasanin, Aml}, title = {Study the quality of school environment as new habitat for allergenc mites in Cairo, Egypt}, journal = {Egyptian Academic Journal of Biological Sciences, B. Zoology}, volume = {1}, number = {1}, pages = {103-116}, year = {2009}, publisher = {Egyptian Society of Biological Sciences}, issn = {2090-0759}, eissn = {2090-0821}, doi = {10.21608/eajbsz.2009.16026}, abstract = {  Thepresentstudy was conducted on eight schools representing four different districts inCairo Governorate from December 2006 till November 2007. The total annualnumber of school dust mites collected was relatively low (66 individuals). ShoberaAl-khama schools embraced the highest population mite density (65.15%) followedby Al- Abassia (16.16%), Al-Salam city (9.09%) and Nasr city recorded thelowest population density (7.58%). The most abundant family collected wasPyroglyphidae representing 27.27% of the total number distributed between twodifferent species of the Genus Dermatophagoides (D.pteronyssinusand D. farinae). This followed by families Cheyletidae andDermanyssidae, each comprises 25.75% of the total with a single species foreach; Cheyletus malccensis and Dermanyssus sp., respectively.Family Acaridae was represented by (21.21% of the total) and came later in abundance.The average number /5 gm. dust ranged between only one individual during Apriland July and 20 individuals during November, however completely absent duringMarch and September. dermanyssids and acarids were present in seven months, cheyletidsin six months and pyroglyphids in five months. All mite species were recordedwith relatively higher rate during cold months reaching its maximum in Januaryfor Pyroglyphidae and Acaridae and during October and November for Cheyletidaeand Dermanyssidae. The lower rate of these mites obtained during hot months.These results indicate that the lower the temperature, the higher populationdensity of school dust mites.}, keywords = {Allergenc,Mites,Egypt}, url = {https://eajbsz.journals.ekb.eg/article_16026.html}, eprint = {https://eajbsz.journals.ekb.eg/article_16026_88fc1749bb4564675065d3d570739abe.pdf} }