Genetic diversity and population structure of Sepia officinalis from the Tunisian cost revealed by mitochondrial COI sequences

Population substructure of Sepia officinalis sampled along the Tunisian coastline was studied. We have scored the genetic variation of the mitochondrial gene cytochrome oxidase 1. A total of 20 specimens from four sampling sites were analysed and revealed 12 different haplotypes. Haplotype diversity...

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Bibliographic Details
Published in:Molecular biology reports 2015-01, Vol.42 (1), p.77-86
Main Authors: Meriam, Tir, Wafa, Tombari, Khawla, Telahigue, Tarek, Hajji, Abdeljelil, Ghram, Mhamed, Elcafsi
Format: Article
Language:English
Subjects:
Animal Anatomy
Animal Biochemistry
Animals
Base Sequence
Biomedical and Life Sciences
coasts
cytochrome-c oxidase
DNA, Mitochondrial - genetics
Electron Transport Complex IV - genetics
fisheries management
Gene Flow
genes
Genetic diversity
Genetic Variation
Genetics, Population
Geography
Haplotypes
Haplotypes - genetics
Histology
Life Sciences
marine resources
Mitochondria
Mitochondria - genetics
mitochondrial DNA
Models, Genetic
Molecular biology
Molecular Sequence Data
Morphology
Phylogeny
Population genetics
population size
population structure
Sepia - genetics
Sepia officinalis
statistics
Tunisia
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Summary:Population substructure of Sepia officinalis sampled along the Tunisian coastline was studied. We have scored the genetic variation of the mitochondrial gene cytochrome oxidase 1. A total of 20 specimens from four sampling sites were analysed and revealed 12 different haplotypes. Haplotype diversity showed a decreasing north to south gradient which may be explained by the hydrogeography of the study area. The overall estimate of genetic divergence (FST) revealed significant genetic differentiation between the pair-wise population comparisons supported by the AMOVA analysis which reveals significant genetic divergence. Finally, populations showed an excess of rare haplotypes. The mismatch distribution and several population genetic statistics indicate that the excess of rare variants is due to a recent expansion for Djerba and Kelibia populations. For Rades and Bizerte populations a constant population size was detected. These findings are important for fisheries management to preserve this marine resource for long-term utilization.
ISSN:0301-4851
1573-4978
DOI:10.1007/s11033-014-3743-z