Microsatellite analysis of red mullet Mullus barbatus (Perciformes, Mullidae) reveals the isolation of the Adriatic Basin in the Mediterranean Sea

Marco Arculeo, Sabrina Lo Brutto, Flavio Garoia, Fausto Tinti, Teresa Maggio

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Abstract

The red mullet Mullus barbatus is commercially one of the most important demersal fish resources in the Mediterranean. Moleculardata on its genetic population structure throughout the Mediterranean are reported. Six microsatellite loci displayed a high degree ofexpected heterozygosity and a high allele number per locus. The Hardy–Weinberg equilibrium test revealed an overall tendencytowards heterozygote deficiency, probably caused by the admixture of various demes. Population differentiation was assessed by analysisof molecular variance (AMOVA) and Bayesian analysis. AMOVA showed that most of the variation was within the population, butthe mean value of FST was significant, indicating genetic differentiation among the samples analysed. This differentiation is primarilyattributable to the isolation of the Adriatic samples and partly to a weaker substructuring of the populations in the Gulf of Lions,Tyrrhenian Sea, Strait of Sicily, and Ionian Sea. Bayesian analysis also revealed genetic differentiation among the samples analysed, identifyingtwo genetic clusters. The restricted gene flow from and to the Adriatic, also recorded for other fish species, most likely reflectsthe environmental separation of the Adriatic and suggests that management protocols for the red mullet in the Mediterranean shouldbe revisited.
Lingua originaleEnglish
pagine (da-a)1883-1891
Numero di pagine9
RivistaICES Journal of Marine Science
Volume66
Stato di pubblicazionePublished - 2009

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Mullidae
Bayesian analysis
Perciformes
Mediterranean Sea
genetic differentiation
microsatellite repeats
basins
Bayesian theory
demersal fish
pinniped
heterozygosity
basin
variance analysis
gene flow
population structure
Tyrrhenian Sea
strait
allele
genetic variation
loci

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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title = "Microsatellite analysis of red mullet Mullus barbatus (Perciformes, Mullidae) reveals the isolation of the Adriatic Basin in the Mediterranean Sea",
abstract = "The red mullet Mullus barbatus is commercially one of the most important demersal fish resources in the Mediterranean. Moleculardata on its genetic population structure throughout the Mediterranean are reported. Six microsatellite loci displayed a high degree ofexpected heterozygosity and a high allele number per locus. The Hardy–Weinberg equilibrium test revealed an overall tendencytowards heterozygote deficiency, probably caused by the admixture of various demes. Population differentiation was assessed by analysisof molecular variance (AMOVA) and Bayesian analysis. AMOVA showed that most of the variation was within the population, butthe mean value of FST was significant, indicating genetic differentiation among the samples analysed. This differentiation is primarilyattributable to the isolation of the Adriatic samples and partly to a weaker substructuring of the populations in the Gulf of Lions,Tyrrhenian Sea, Strait of Sicily, and Ionian Sea. Bayesian analysis also revealed genetic differentiation among the samples analysed, identifyingtwo genetic clusters. The restricted gene flow from and to the Adriatic, also recorded for other fish species, most likely reflectsthe environmental separation of the Adriatic and suggests that management protocols for the red mullet in the Mediterranean shouldbe revisited.",
keywords = "Microsatellites, Mullus barbatus, Population structuring",
author = "Marco Arculeo and {Lo Brutto}, Sabrina and Flavio Garoia and Fausto Tinti and Teresa Maggio",
year = "2009",
language = "English",
volume = "66",
pages = "1883--1891",
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TY - JOUR

T1 - Microsatellite analysis of red mullet Mullus barbatus (Perciformes, Mullidae) reveals the isolation of the Adriatic Basin in the Mediterranean Sea

AU - Arculeo, Marco

AU - Lo Brutto, Sabrina

AU - Garoia, Flavio

AU - Tinti, Fausto

AU - Maggio, Teresa

PY - 2009

Y1 - 2009

N2 - The red mullet Mullus barbatus is commercially one of the most important demersal fish resources in the Mediterranean. Moleculardata on its genetic population structure throughout the Mediterranean are reported. Six microsatellite loci displayed a high degree ofexpected heterozygosity and a high allele number per locus. The Hardy–Weinberg equilibrium test revealed an overall tendencytowards heterozygote deficiency, probably caused by the admixture of various demes. Population differentiation was assessed by analysisof molecular variance (AMOVA) and Bayesian analysis. AMOVA showed that most of the variation was within the population, butthe mean value of FST was significant, indicating genetic differentiation among the samples analysed. This differentiation is primarilyattributable to the isolation of the Adriatic samples and partly to a weaker substructuring of the populations in the Gulf of Lions,Tyrrhenian Sea, Strait of Sicily, and Ionian Sea. Bayesian analysis also revealed genetic differentiation among the samples analysed, identifyingtwo genetic clusters. The restricted gene flow from and to the Adriatic, also recorded for other fish species, most likely reflectsthe environmental separation of the Adriatic and suggests that management protocols for the red mullet in the Mediterranean shouldbe revisited.

AB - The red mullet Mullus barbatus is commercially one of the most important demersal fish resources in the Mediterranean. Moleculardata on its genetic population structure throughout the Mediterranean are reported. Six microsatellite loci displayed a high degree ofexpected heterozygosity and a high allele number per locus. The Hardy–Weinberg equilibrium test revealed an overall tendencytowards heterozygote deficiency, probably caused by the admixture of various demes. Population differentiation was assessed by analysisof molecular variance (AMOVA) and Bayesian analysis. AMOVA showed that most of the variation was within the population, butthe mean value of FST was significant, indicating genetic differentiation among the samples analysed. This differentiation is primarilyattributable to the isolation of the Adriatic samples and partly to a weaker substructuring of the populations in the Gulf of Lions,Tyrrhenian Sea, Strait of Sicily, and Ionian Sea. Bayesian analysis also revealed genetic differentiation among the samples analysed, identifyingtwo genetic clusters. The restricted gene flow from and to the Adriatic, also recorded for other fish species, most likely reflectsthe environmental separation of the Adriatic and suggests that management protocols for the red mullet in the Mediterranean shouldbe revisited.

KW - Microsatellites

KW - Mullus barbatus

KW - Population structuring

UR - http://hdl.handle.net/10447/51418

M3 - Article

VL - 66

SP - 1883

EP - 1891

JO - ICES Journal of Marine Science

JF - ICES Journal of Marine Science

SN - 1054-3139

ER -