Genetic structure of three marine fishes from the Gulf of Pagasitikos (Greece) based on allozymes, RAPD, and mtDNA RFLP markers

Abstract

In the present work we used three molecular techniques (allozymes, RAPDs and mtDNA RFLPs) in order to study the genetic structure of three commercial marine species (Mullus surmuletus, Mullus barbatus, and Pagellus erythrinus). Each species was sampled from three locations within the Gulf of Pagasitikos, Greece and from two neighbouring locations outside the Gulf (Trikeri and Alonissos). Values of genetic heterozygosity and nucleotide diversity for all populations studied were similar or above the mean values observed in marine fishes. None of the three types of molecular markers used revealed diagnostic patterns, which could allow the allocation of individuals to one of the populations. The analyses revealed that the three populations within Pagasitikos were homogenous representing thus a panmictic stock. However, there were evidences of genetic population subdivision between localities from inside and outside of the Pagasitikos Gulf. The results provide essential information for the design of a sustainable management plan of the Gulf of Pagasitikos and its demersal fish resources.

Exploring a Nonmodel Teleost Genome Through RAD Sequencing—Linkage Mapping in Common Pandora, Pagellus erythrinus and Comparative Genomic Analysis

“…Although only recently farmed commercially, production is increasing year by year, and its potential as a significant aquaculture species is recognized ( Basurco et al 2011 ). Comparatively little is known about the genetics of common pandora, with only a few studies reporting on the use of genetic markers to study population structure within the species ( Apostolidis et al 2009 ; Fassatoui et al 2009 , 2012 ). In the present study, we employed double digest restriction associated DNA (ddRAD) sequencing to construct the first genetic linkage map for common pandora.…”

Life-history traits of the striped red mullet Mullus surmuletus (Linnaeus, 1758) in the south Aegean Sea (eastern Mediterranean)

“…Both morphological (Fage, 1909; Benzinou et al ., 2013; Mahé et al ., 2014) and genetic studies (Mamuris et al ., 1999; Galarza et al ., 2009; Matić-Skoko et al ., 2018) have shown that M. surmuletus tends to form distinct populations within its distribution range, although genetic panmixia has also been reported at a small geographic scale (Apostolidis et al ., 2009). This emphasizes the need for collecting basic biological information about the species at regional level, i.e.…”

Evidence of subtle genetic structure in the sympatric species Mullus barbatus and Mullus surmuletus (Linnaeus, 1758) in the Mediterranean Sea

“…Genetic studies have been carried out in the Mediterranean Sea on both species 16 , revealing highly structured metapopulations. A sharp genetic division was detected when comparing striped red mullet originating from the Atlantic Ocean and from Mediterranean Sea.…”