Revue Nature et Technologie
Volume 5, Numéro 1, Pages 12-18
2013-01-30
Authors : Toumi Hela . Bejaoui Mustapha . Boumaiza Moncef .
The present study is a contribution to the biogeography and ecology of cladocera and copepoda Cyclopoida, from groundwater in Bizerte area (Northern Tunisia) throughout an annual cycle (November 2006 - October 2007). Eleven taxa of Crustacean were sampled and identified: four cladocera (Ceriodaphnia reticulata, Ceriodaphnia laticaudata, Daphnia magna and Daphnia similis) and seven copepoda cyclopoida (Cyclops abyssorum mauritaniae, Eucyclops lilljeborgii, Thermocyclops dybowskii, Acanthocyclops rhenanus, Eucyclops macruroides, Macrocyclops albidus and Diacyclops sp). C. abyssorum mauritaniae was sampled for the first time in Tunisia, in Rimel’s well near the Rimel Sea in Bizerte. The relationships between taxa and the measured environmental and spatial variables (Temperature, Salinity, Conductivity, Turbidity, pH and Depth) were examined using both unconstrained (Principal Components Analysis, PCA) and constrained (MDS) ordination techniques. The MDS ordination according to biotic and physico-chemical parameters allowed grouping stations in four distinct habitats according to the ecological preferences of its species. D. magna, D. similis and C. abyssorum mauritaniae seems tolerate waters with high salinity and turbidity. C. reticulata colonize biotopes characterized by neutral pH and a low water temperature. In contrast, M. albidus shows a relatively tolerance to warmer water and E. macriroides colonizes deep ecosystems characterized by a low conductivity.
biogeography; cladocera; copepoda cyclopoida; ecology; groundwater
Ghezlaoui Sidi-mohammed Bahae-ddine
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pages 1145-1154.
Haouchine A
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Haouchine Fz
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Labadi A
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pages 337-349.
Sahli H
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Tagorti Ma
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Tlig S
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pages 95-108.
Mathlouthi Majid
.
Ghali Abdessalem
.
Lebdi Fethi
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pages 76-89.
Soro Tanina Drissa
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Fossou N'guessan Marie-rosine
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Ble Louan Odile
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Soro Gbombélé
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Ahoussi Kouassi Ernest
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Adjiri Oi Adjiri
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Oga Yéi Marie Solange
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Soro Nagnin
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pages 81-96.