Detection and quantification of microplastics in Posidonia oceanica banquettes in the Gulf of Gabes, Tunisia.

Plastic pollution and microplastic (MP) debris are some of the most significant solid waste pollutants, threatening the marine environment and causing sediment accumulation. Coastal seagrass areas are usually important habitats that support multiple living species and provide several ecosystem services. This study aimed to determine the abundance, characteristics, and composition of microplastics on the southern side of the Tunisian Mediterranean Sea by using Posidonia oceanica (P.

Phylogenetic analysis of antimicrobial lactic acid bacteria from farmed seabass Dicentrarchus labrax.

The use of lactic acid bacteria (LAB) in the prevention or reduction of fish diseases is receiving increasing attention. In the present study, 47 LAB strains were isolated from farmed seabass ( Dicentrarchus labrax ) and were phenotypically and phylogenetically analysed by 16S rDNA and randomly amplified polymorphic DNA - polymerase chain reaction (RAPD-PCR). Their antimicrobial effect was tested in vitro against a wide variety of pathogenic and spoilage bacteria.