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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 ...
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 ...
The effect of the insecticide (primicid) On neurosecretory cells of the earthworm aporrectodea caliginosa
(
Qatar University
, 1995 , Article)
The effect of the insecticide "Primicid" on the neurosecretory cells of the cerebral ganglion of the earthworm Aporrectodea caliginosa was studied. The fine changes in the organelles of certain ncurosecrelory cells was ...
Paragorgorhynchus aswanensis n.sp. (acanthocephala: Echinorhychidae): an intestinal parasite of some fishes from aswan high dam lake in upper egypt
(
Qatar University
, 1990 , Article)
Paragorgorhynchus aswanensis n.sp. is described, both by light and scanning electron microscopy, from Lates niloticus,, Clarias lazera, Bagrus bayad, B. docmac, and Tetraodon fahaka, caught from the Aswan High Dam Lake in ...
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 influence of certain physical stresses on pulal mortality of Culex pipiens complex L. II. Effect of exposure to oxygen and partial vacuum.
(
Qatar University
, 1993 , Article)
The results indicated that when pupae were exposed to oxygen atmosphere for different periods ranging from V2 - 48 hours, the pupal mortality increased with increasing the exposure periods. The mortality reached to about ...
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, ...
New Records Of Some Mammals From Qatar: Insectivora, Lagomorpha And Rodentia
(
Qatar University
, 1984 , Article)
The present report deals with six native mammalian species to be recorded for the first time from Qatar. They belong to the following orders: Insectivora, Lagomorpha and Rodentia. None of these species is endemic to Qatar.
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 ...
Electron microscopic and autoradiographic analysis of the distribution of the vagus nerve in the ferret stomach
(
Qatar University
, 1999 , Article)
In this study, tritiated leucine was injected into the vagal dorsal motor nucleus after acute and chronic partial vagotomy. The method of sampling of the stomach, application of % 2 test and the analysis of the electron ...