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Now showing items 31-40 of 49
On Three Species Of The Trematode Genus Plagioporus Stafford, 1904 From Red Sea Fishes
(
Qatar University
, 1985 , Article)
The genus PIagioporus is breiefly reviewed. P. (Caudotestis) neopercis is re-described from Anampses caeruleopunctatus and Lethrinus miniatus and P. (Caudotestis) lethrini from L. nebulosus and L. miniatus. Both trematodes ...
Effect Of Daily Alcohol Injection Of Pregnant Rats On The Developing Embryos
(
Qatar University
, 1989 , Article)
In the present investigation; three doses; 0.002 (group I), 0.004 (group II) and 0.006 (group III) ml/gm body weight of 25%ethanol were used. Continuous IP injection of alcohol from day 7 through day 15 caused a significant ...
Effects of gamma radiation on the activity of the mosquito culex pipiens L. II. Effects on the sexual vitality of the mosquito
(
Qatar University
, 1988 , Article)
The effects of 3 gamma doses on the sex vitality of the mosquito Culex pipiens L. were studied after irradiation of the larvae, pupae or newly emerged adults.
No significant effect on the sex attraction was obseived when ...
Sequence Of Ossification In The Skeleton Of Growing Lizard Chalcides Ocellatus Forscal (Scincidae, Reptilia)
(
Qatar University
, 1988 , Article)
The distribution of cartilaginous and ossification rudiments were described in the live-bearing lizards, Chalcides ocellatus, at birth, one-month-old, and 12-month-old. The skeletal elements investigated are: neurocranium, ...
Effect Of Oral Administration Of Alcohol On The Developing Rat Embryos
(
Qatar University
, 1988 , Article)
Pregnant rats were forced to ingest 0.015 ml of 25% ethanol/gm body weight daily starting from day 7 (D7-group) or day 9 (D9-group) until day 15 of gestation. The number of surviving embryos significantly decreased and ...
Effect Of Cobra Naja Haje Venom On The Adrenal Activity In Rabbits
(
Qatar University
, 1989 , Article)
Injection of rabbits with a sublethal dose (0.2mg/kg) of Naja haje venom induced an increase in serum cortisol, free cholesterol, glucose and potassium ions. A decrease in total cholesterol and sodium ions was observed ...
Effect Of Hydrocortisone On The Skin Of The Developing Chick Embryo
(
Qatar University
, 1986 , Article)
Hydrocortisone treatment of chick embryos caused acceleration of epidermis thickening and keratinization, decrease in dermal cell number and increase of dermal collagenous fibres. The hormone also caused a marked increase ...
Helminth parasites of fishes from the arabian gulf: 5. On helicometrina qatarensis n. Sp. (digenea: opecoelidae) and stephanostomum nagatyi N. SP. (digenea: acanthocolpidae); parasites of Epinephelus Spp. from Qatari Waters
(
Qatar University
, 1988 , Article)
Helicometrina qatarensis n. sp. is described from Epinephelus tauvina and E. summana. It differs from other species of Helicometrina which have 9 testes in the body shape, position of genital pore, distribution of vitellaria ...
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 ...
Effects of gamma radiation on the activity of the, mosquito culex pipiens L. : I. Effects on the attraction of the mosquito to light, colours and host
(
Qatar University
, 1988 , Article)
The present work was carried out to investigate the effects of gamma radiation at three doses: 40, 80 and 120 Gray. On the response of the adult mosquito Culex pipieas complex when irradiated in the larval, pupal or adult ...