Determination of Zn, Fe, Cr and Cu in Marine Fish Commonly Consumed in Senegal

The content of four heavy metals (zinc, iron, chromium and copper) in muscles, liver and gonads has been studied for the five most consumed fish species (Cephalopholus taeniops, Scomber japonicus, Lagocephalus laevigatus, Pagellus bellottii and Pagrus caeruleostictus) in the Soumbedioune region. The samples were digested by acid digestion. The metal contents were quantified using a PF-11 type photometer. The results obtained show that metals such as zinc, iron and chromium are significantly higher (p <0.05) in the muscles of the four species than in the liver and gonads. However, the levels of heavy metals in the muscles, liver, and gonads of the five species are above the acceptable limit recommended by the FAO and WHO, with the exception of the copper levels in the gonads of the species Pagellus bellottii.

Complete mitochondrial DNA sequence analysis of Bluespotted seabream, Pagrus caeruleostictus (Perciformes: Sparidae)

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Complete mitochondrial DNA sequence analysis of Bluespotted seabream, Pagrus caeruleostictus (Perciformes: Sparidae)

Background Bluespotted seabream, Pagrus caeruleostictus is a benthopelagic marine species found in tropical regions and a member of the family Sparidae and genus Pagrus . In this article, a mitochondrial DNA sequence by high-throughput technique, Illumina Hiseq, was carried out on muscle of the above species and determined the complete mitogenome. Samples were obtained from species collected from the coast of Ghana, West Africa.Results The complete mitochondrial DNA sequence was 16,653 bases pairs in length (GenBank Accession number: MN319701) and comprises of 37 genes; 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes as well as a control region as in a typical vertebrate mitochondrial DNA gene. The phylogenetic analysis showed P. caeruleostictus clustered with the clade of P. auriga. Conclusion This research will serve as the foundation for molecular genetic studies of Ghanaian fish species. Moreover, it will contribute to the phylogenetics of class Actinopterygii, order Spariformes, family Sparidae and genus Pagrus.

Complete mitochondrial DNA sequence analysis of Bluespotted seabream, Pagrus caeruleostictus (Perciformes: Sparidae)

Background Bluespotted seabream, Pagrus caeruleostictus is a benthopelagic marine species found in tropical regions and a member of the family Sparidae and genus Pagrus . In this article, a mitochondrial DNA sequence by high-throughput technique, Illumina Hiseq, was carried out on muscle of the above species and determined the complete mitogenome. Samples were obtained from species collected from the coast of Ghana, West Africa.Results The complete mitochondrial DNA sequence was 16,653 bases pairs in length (GenBank Accession number: MN319701) and comprises of 37 genes; 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes as well as a control region as in a typical vertebrate mitochondrial DNA gene. The phylogenetic analysis showed P. caeruleostictus clustered with the clade of P. auriga. Conclusion This research will serve as the foundation for molecular genetic studies of Ghanaian fish species. Moreover, it will contribute to the phylogenetics of class Actinopterygii, order Spariformes, family Sparidae and genus Pagrus.