Browsing by Author "Al Yousuf, Shoa'a [شعاع السيد اليوسف]"
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The effect of the insecticide (primicid) On neurosecretory cells of the earthworm aporrectodea caliginosa
Al Yousuf, Shoa'a [شعاع السيد اليوسف] ( 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 ... -
Neurosecretory Cells In Certain Earthworms Species (Oligochaete)
Al Yousuf, Shoa'a [شعاع السيد اليوسف] ( 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: ... -
On The Earthworm Fauna And Distribution In The State Of Qatar
Al Yousuf, Shoa'a [شعاع السيد اليوسف]; Hagras, Ahmed E. W. ( Qatar University , 1986 , Article)This paper is a preliminary account of the earthworms collected in February and March, 1986, from 10 localities in Qatar. Five species, Amynthas corticis (Family Megascolecidae), Dichogaster bolaui (Family Octochaetidae), ... -
Senso-Neuroendocrine Cells Within The Cerebral Ganglion Of The Earthworm Aporrectodea Caliginosa
Al Yousuf, Shoa'a [شعاع السيد اليوسف] ( Qatar University , 1992 , Article)Ciliated neurones of probable endocrine function are present inside and outside the cerebral ganglion of the earthworm Aporrectodea caliginosa. Cell fibers contain clusters ofsynaptoid vesicles in regions adjacent to the ... -
ultrastructural observations on the effect of the insecticide "aldrin" on some neurosecretory cells of the cerebral ganglion of the earthworm aporrectodea caliginosa
Al Yousuf, Shoa'a [شعاع السيد اليوسف] ( Qatar University , 1994 , Article)The effect of the insecticide "Aldrin" on the neuroglia and neurosecretory cells of the earthworm Aporrectodea caliginosa was studied. The fine changes on the organdies of certain neurosecretory cells was observed by light ... -
Ultrastructural Study Of Type "B" Neurosecretory Cells In The Earthworm Nervous System
Al Yousuf, Shoa'a [شعاع السيد اليوسف] ( Qatar University , 1991 , Article)Neurosecretory cell types Bi—B5 are widely distributed throughout the cerebral, subesophageal, nerve cord and peripheral ganglia of the oligochaete Aporrectodea caliginosa, Lumbricus terrestris, Eisenia foetida, Octolasion ...