Analysis of genetic structure of the red shrimp Aristeus antennatus from the Western Mediterranean employing two mitochondrial regions

Abstract

In this paper we addressed the phylogeographical genetic structure of the economically important red shrimp, Aristeus antennatus (Crustacea, Aristeidae) in the Western Mediterranean. Partial mitochondrial regions of the cytochrome c oxidase subunit I (514 bp) and ribosomal 16S subunit (547 bp) were sequenced in 137 individuals collected at three localities: Catalan Sea, Ligurian Sea and the southern Tyrrhenian Sea. Values of haplotypic diversity were h = 0.552-0.724, whereas those for nucleotide diversity were pi = 0.0012-0.0026. Among-sample genetic diversity was not significant and no geographical patterns in the distribution of haplotypes were apparent. Results of the present study are consistent with a past population expansion that occurred <2,000 years ago. Despite the current fishing pressure, genetic variability appears to be sufficiently high to keep A. antennatus populations stable over time. Dispersal-related life history traits may account for the shallow genetic structure. Our results are not in contrast with the hypothesis of sustainability of Western Mediterranean red shrimp fisheries predicted on the basis of previously obtained biological results.

Influence of the genetic structure of the red and blue shrimp, <i>Aristeus antennatus</i> (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean

“…The estimates of genetic variability found in the present work were consistent with those found in a previous study of three geographical samples (Roldán et al, 2009). In that paper the same portion of 16S mitochondrial gene herein analyzed was treated jointly to a region of COI.…”

“…Mitochondrial DNA has been widely used to study genetic variability in marine organisms, including crustaceans (Avise, 2000). The DNA 16S gene has previously been used by various researchers and has yielded good results in identifying crustacean populations (Avise, 2000;Roldán et al, 2009).…”

“…White muscle tissue was excised from the last abdominal segment of each individual and stored in 95% ethanol. Genomic DNA extraction and 16S mitochondrial gene amplification and sequencing were performed according to the procedures outlined in Roldán et al (2009). We used the polymerase chain reaction (PCR) primers detailed in Roldán et al (2009).…”

“…Genomic DNA extraction and 16S mitochondrial gene amplification and sequencing were performed according to the procedures outlined in Roldán et al (2009). We used the polymerase chain reaction (PCR) primers detailed in Roldán et al (2009). Standard precautions, including the use of negative controls, were taken to assess contamination and related problems.…”

Intra- and Inter-specific Variation of Four Acetes Species (Crustacea: Decapoda: Sergestidae) Sampled along the West Coast of Peninsular Malaysia

“…Sea and eastern Atlantic Ocean (Pellerito et al 2009), Western Mediterranean red shrimp Aristeus antennatus (Roldán et al 2009) and Indo-West Pacific portunid crabs (Lai et al 2010).…”