Browsing Qatar University Science Journal - [From 1981 TO 2007] by Subject "علم الحيوان"
Now showing items 1-20 of 114
-
Abundance Of Insects And Mites Infesting Stored Grain And Animal Feed In Riyadh And Dammam Provinces, Saudi Arabia
( Qatar University , 1994 , Article)Insects and mites infesting wheat, maize and wheat bran, stored in plants at Riyadh and Dammam, Saudi Arabia, were scanned in 2 seasons, 1987 and 1988. Grains from the local markets and dust from both provinces were also ... -
Acid-Base Status Of Blood Of Varanus Griseus And Uromastyx Aegyptius
( Qatar University , 1984 , Article)1) A comparative study was carried out on the acid-base status of blood collected from five main blood vessels of two desert lizards, the monitor, Varanus griseus, and the dabb, Uromastyx aegyptius. 2) Blood of the monitor ... -
The Appendicular Skeleton In The Hatching And In Young Bunopus Tuberculatus Blanford, 1874 (Gekkonidae, Reptilia)
( Qatar University , 1988 , Article)The appendicular skeleton and its calcification are described in Bunopus tuberculatus at 3 ages: at hatching, 6-month-old and 12-month-old. Between the 3 ages there are several differences in the osteological pattern. The ... -
Ascending urinary tract infection in rats caused by Proteus mirabilis
( Qatar University , 1997 , Article)A model for ascending unobstructed urinary tract infection was developed in female rats to study the pathogenesis of urinary tract infection by Proteus mirabilis. Urinary bladders of rats were inoculated by I. V. cannula ... -
Biodiversity Of Helminth Parasites Of Fishes In The Arabian Gulf, With Special Reference To Digenetic Trematodes And Cestodes
( Qatar University , 1996 , Article)Biodiversity of the fish fauna in the Arabian Gulf is remarkable with more than 450 species known to date in this offshoot from the Indian Ocean. The present status of our knowledge on helminth parasites of fishes in the ... -
Biological effects of gamma radiation on stored product insects. 4 - radiation effects on sex pheromone production and perception by the rust-red flour beetle. Tribolium castaneum (herbst)
( Qatar University , 1985 , Article)Irradiation of the rust-red flour beetle, T. castaneum at different doses of gamma radiation considerably affected sex pheromone production by females and perception by males. The production of sex pheromone by virgin ... -
Blastema Volume And Nuclear Size In The Regenerating Hind Limbs In Larvae Of Xenopus Laevis And Bufo Regularis After Transection At The Ankle Level
( Qatar University , 1990 , Article)After amputation at the ankle level of hind limbs in larval Xenopus laevis and Bufo regularis, an increase in the nuclear volume of blastema and stump tissue cells was observed. The cells in the distal region of blastema ... -
The blood cells of a sea urchin from abou-kir coast Alexandria, Egypt.
( Qatar University , 1993 , Article)The blood cells of a common sea urchin, collected from Abou-Kir region, were investigated using light and electron microscopy. Their distribution, properties, characteristics and histogenesis were determined. On the basis ... -
Blood Gases of some Skink Lizards
( Qatar University , 1982 , Article)(1) Po2 and Pco2 of arterial and venous blood are studied in three skink lizards: the bean skink, Mabui quinquetaeniata, inhabiting the cultivated areas, and the two burrowing desert lizards; the ocellated skink, Chalcides ... -
Blood Gases Of The Water Snake, Natrix Tesselluta, And The Desert Snake, Eryx Colubrinus
( Qatar University , 1983 , Article)1. This comparative study examines 0^ dissociation curves of blood of two colobrine snakes: an aquatic snake, Natrix tesselluta, and a desert snake, Eryx colubrinus. 2. In the case of the whole blood of the aquatic snake, ... -
Changes in some chemical constituents of stored grain and animal feed In two provinces in Saudi Arabia
( Qatar University , 1995 , Article)Changes in total acidity, total carbohydrates, reducing sugars, starch, total protein, ether soluble fraction, sodium, potassium, calcium, magnesium, total phosphorus, ash, dry and wet gluten, crude fibres and specific ... -
Combined effects of gamma radiation and Some physical factors on the rate of development of culex pipiens complex(L)
( Qatar University , 1993 , Article)The present work deals with the role of some physical factors, applied separately or combined with gamma radiation on the Fj rate of development of Culex pipiens L. when treated in the pupal stage. The results showed no ... -
Combined effects of oxygen, partial vacuum, temperature, humidity and gamma radiation on mating competitiveness of culex pipiens complex l. Males
( Qatar University , 1993 , Article)When the pupal stage of Culex pipiens complex L. male mosquito was exposed to gamma radiation (60 Gy), oxygen, partial vacuum (0.1 torr), low temperature (10°C), for one or two hours, or low humidity (31% R. H.) for 3 ... -
Comparative Development Studies On The Lateral Canal System In Cyprinus Carpio And Gambusia Affinis Affinis
( Qatar University , 1990 , Article)The lateral line canals and the neuromasts situated inside their lumina are described in two fishes differing in their feeding habits. There are 20 canal neuromasts in the bottom feeder Cyprinus carpio, while in the surface ... -
Comparative Histopathological Studies On The Effects Of Ionizing X-Ray Irradiation On Normal Liver And Hepatoma
( Qatar University , 1984 , Article)Normal mice exposed to X-rays showed distinct external symptoms and died mostly on the 13th or 14th day after irradiation. Pathological symptoms were more exaggerated in mice diseased with hepatoma and subjected to the ... -
Comparison of mechanical shaking, ultrasonication and Homogenization as techniques used in removing attached Bacteria and their effects on the associated protozoa
( Qatar University , 1994 , Article)During studying of Protozoa in the slow sand filter beds in Ashford Common Water Treatment Work (London, U.K.), it was found necessary to study the interstitial and attached bacterial populations involved with sand particles, ... -
Density and diversity of the desert Arthropoda of Qatar
( Qatar University , 1997 , Article)Density and diversity of arthropods were studied at different habitats of the Qatari desert. Diurnal sampling was conducted at two seasons of the year, the end of the dry season, at the beginning of autumn (October) in ... -
Developmental anatomy of the central nervous system of the cotton leaf worm, spodoptera littoralis boisd.
( Qatar University , 1983 , Article)The central nervous system, C. N. S., of the cotton leaf worm, Spodoptera littoralis (B.) develops from a median row of embryonic neuroblasts which divide repeatedly to form a double ganglionic chain. The two chains fuse ... -
Dominance Value And Community Production Of Desert Arthropoda In Qatar
( Qatar University , 1999 , Article)Diurnal sampling of epigeal Arthropoda from different desert habitats in Qatar was carried out at the end of the summer season (October) and in spring (April) of 1995, 1996 and 1997. Dominance values of the species collected ... -
ECG Abnormalities Induced By Scorpion Venom Administration: The Effect And The Mechanism
( Qatar University , 1994 , Article)Intramuscular administration of scorpion (Leiurus quinquestriatus) lyophilized venom (100, 200 and 400 mg/kg) into rats produced drastic changes in the electrical activity of the cardiac muscle. These abnormalities were ...
