<%pg=request.getParameter("page");%>
     

Franšais      print      e-mail    

Citation

Essid N., Mahmoudi E., Boufahja F., Dellali M., Beyrem H. and Aissa P. (2007). Impact of mussel pseudo-feces on heterotrophic bacteria densities in the mussel farm sector of the Bizerte Lagoon (Tunisia). Rev. Sci. Eau 20 (2) : 383-392.

Original Title: Impact des pseudo-fèces de moules sur les densités des bactéries hétérotrophes dans le secteur mytilicole de la lagune de Bizerte (Tunisie).

Full text (PDF)

Abstracts

This study aims to characterize the effect of high organic loads, produced by a mussel farm in the Bizerte Lagoon, on the distribution of bacterial densities of, especially, marine heterotrophic bacteria and Vibrionaceae in the water column and in the sediment. Five sites located along a distance gradient from the mussel breeding ground were surveyed during the winter of 2000 and the summer of 2001. Below the mussel farm, the sediment was characterized by high percentages of fine particles (78-83%) and total organic carbon (TOC; 2.5%). Furthermore, this station exhibited high bacterial densities, especially of heterotrophic flora (1.82-2.83 108UFC/g) and Vibrionaceae (2.50-17.32 102 UFC/g). Principal components analysis revealed a strong relationship among bacterial density, high organic loads and hydrological parameters, particularly temperature, salinity and dissolved oxygen.

Keywords

Heterotrophic bacteria, Vibrionaceae, Organic matter, Bizerte Lagoon, Mussel farms.

Corresponding author

Naceur Essid, Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, 7021 Zarzouna Bizerte, Tunisie.
Courriel :

Franšais      print      e-mail    
     


Update: 2008-01-09
© INRS Eau, Terre et Environnement