[Toxocara canis encephalitis: case report].
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Biomedical subjects
Publications and source records attributed to J Zaouali.
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The inshore areas of Tabarka and Bizerte are not submitted to the bacterian pollution. The "Old Port" of Bizerte is mainly contaminated all the year round and sometimes polluted the neighbouring urban beach. The lagoon of Bizerte presents any bacterian pollution and could be adapted to the conchyliculture and to the stabulation of Bivalves, with before some important precautions.
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The study of the sexual cycle of Cerastoderma glaucum points out the presence of a very short sexual rest period (from january to march) and of three spawning periods (from may to june, august to september, december to january). If autumn is warm (15 degree C), 80 to 90% of the winter stock is formed by mature individuals.
The statistical study of Cerastoderma glaucum in the little harbour of Bou Grara points out the presence of 21 ribs on the valves, a mean growth of 19,3 mm for the first year of life and a mean longevity of two years; the formation of rest rings is made at summer period. The dynamical study of the population shows its large homeostasy.
Rhinobatos rhinobatos and Rh. cemiculus are two digging species with a malacophagic and, accessorly ichthyophagic diet. Rh. rhinobatos' main prey is Hermione hystrix. Rh. cemiculus' one is Citharus macrolepidotus. This study points out that it exists few seasonal changes about the diet of these Selacians.
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