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Now showing items 121-126 of 126
Neurosecretory Cells In Certain Earthworms Species (Oligochaete)
(
Qatar University
, 1987 , Article)
Typical Neurosecretory cells of the cerebral ganglion were studied in three oligochaete families: A. porrectodea caliginosa, Dendrodrilus rubidus: (Lumbricidae)';
Amynchas corticis : (Megascolidae); Dichogaster bolaui: ...
Microscopic Study Of The Rabbit Pancreas After Vagotomy
(
Qatar University
, 1997 , Article)
The microscopic study of the morphological changes in the rabbit pancreas were investigated after vagotomy. Structural changes were observed in the pancreatic acinar cells and in the islets of langerhans two and three weeks ...
Vitamin - a and limb regeneration in stages of the egyptian toad, bufo regularis Reuss-histological study
(
Qatar University
, 1995 , Article)
The histogenesis of regenerated limbs, of both control and treated /larvae/ with 30 I.U./ml of retinol palmitate for 3 days, was studied in two larval stages (viz. stages 53 & 54) of the anuran amphibian, Bufo regularis ...
Thermal Acclimation In The Resting Metabolism Of The Nocturnal Gecko, Hemidactylus Flaviviridis
(
Qatar University
, 1996 , Article)
Hemidactylus flaviviridis was acclimated to two temperature regimes (20 and 30°C). The resting metabolic rates (ml g1 h"1) were determined at 20, 25,30 and 35°C, using constant pressure manometric respirometers. The 20°C- ...
The effect of temperature and relative humidity on survival of unfed hyalomma impeltatum (acarina: ixodidae)
(
Qatar University
, 1991 , Article)
This work investigates survival of unfed Hyalomma impeltatum in which 8089 larvae, 3946 nymphs, 2058 males and 2304 females held at different combinations of temperature (21, 25, 29 and 34°C) and relative humidity (RH) ...
A histological study on the neuroendocrinal system of a coleopterous insect, cy3ister tripunctatus africanus cast.
(
Qatar University
, 1983 , Article)
Four different types of neurosecretory cells were identified in the brain of the adult water beetle, Cybister tripunctatus africanus Cast. These cells were identified into A, B, C, & D types according to their morphological ...