0000000000871858

AUTHOR

Oum Kalthoum Ben Hassine

showing 3 related works from this author

Overlapping patterns of morphometric and genetic differentiation in the Mediterranean goby Pomatoschistus tortonesei Miller, 1968 (Perciformes, Gobii…

2012

Abstract. The genetic and morphological variations of Pomatoschistus tortonesei Miller, 1968 were studied in samples collected from three Tunisian lagoons. The morphological analysis included 18 morphometric measurements and was based on linear discriminant analysis (LDA), whereas the genetic analysis was based on the 16S-rRNA and COI mitochondrial genes. Both analyses differentiated the populations and demonstrated consistently a well-supported differentiation between the western Mediterranean samples (Bizerta and Tunis South lagoons) and the eastern Mediterranean sample (El Bibane lagoon). The observed differentiation could be explained in terms of the geographic isolation of the various …

Mediterranean climateGenetic diversityGobiidae; Genetic diversity; Lagoon ecosystems; Mediterranean Sea; MorphometrybiologyEcologyMorphometryPomatoschistus tortoneseiSettore BIO/05 - ZoologiaGobyGenetic VariationZoologybiology.organism_classificationBiological EvolutionGenetic diversityPerciformesPerciformesPhenotypeMediterranean seaLagoon ecosystemMorphological analysisMediterranean SeaAnimalsBiological dispersalAnimal Science and ZoologyGobiidaeZoology
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Genetic architecture of the marbled goby Pomatoschistus marmoratus (Perciformes, Gobiidae) in the Mediterranean Sea

2011

The marbled goby Pomatoschistus marmoratus, a species inhabiting coastal Mediterranean lagoons, has been studied by measuring its mitochondrial DNA variation. This analysis revealed a Mediterranean west vs east split and, subsequently, an eastern differentiation among the Libyan–Tunisian Gulf, the Adriatic Sea and the Aegean Sea. The high cohesion between the samples collected in the vast area of western Mediterranean contrasts with the genetic mosaic of the more sub-structured eastern Mediterranean. This western homogeneity can not yet be fully explained even if a human-mediated migratory flow, due to a maritime traffic, has been posited. The pattern in the eastern basin revealed a genetic…

Mediterranean climateMarbled gobySettore BIO/05 - ZoologiaDNA MitochondrialPerciformesPomatoschistusEvolution MolecularMediterranean seaGeneticsMediterranean SeaAnimalsMolecular BiologyEcology Evolution Behavior and SystematicsPomatoschistus marmoratus mtDNA Phylogeography Siculo-Tunisian strait Adriatic Sea Aegean Sea Lagoon habitat molecular marker Pomatoschistus marmoratus Mediterranean SeabiologyEcologyGenetic VariationSequence Analysis DNAbiology.organism_classificationPerciformesFisheryPhylogeographyGenetics PopulationHabitatHaplotypesGenetic structureHydrography
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A study on Pomatoschistus tortonesei Miller 1968 (Perciformes, Gobiidae) reveals the Siculo-Tunisian Strait (STS) as a breakpoint to gene flow in the…

2009

The current genetic structure of P. tortonesei, exclusively inhabiting lagoons, may reflect a Plio-Pleistocene colonisation of an ancestor line which has undergone phases of population decline and expansion, following alternate cooling phases. Regarding the calculation of divergence time, it has been estimated that P. tortonesei seems to be the most recent species within the Pomatoschistus genus. It appears also that the discrepancy of P. tortonesei into two distinct phyletic lineages occurred 0.1 Mya. Recurring shifts in sea level and sea surface temperatures of Mediterranean Sea caused the desiccation of shallower lagoons and the consequent bottleneck phenomena of the brackish populations…

Gene FlowSettore BIO/05 - ZoologiaDNA MitochondrialMediterranean BasinPerciformesGene flowEvolution MolecularRNA Ribosomal 16SMediterranean SeaGeneticsAnimalsMolecular BiologyPhylogenyEcology Evolution Behavior and SystematicsGeographybiologyEcologyPomatoschistus tortoneseiBreakpointSequence Analysis DNAbiology.organism_classificationPerciformesFisheryGenetics PopulationHaplotypesmtDNA Pomatoschistus tortonesei Siculo-Tunisian Strait (STS)
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