Environmental features of deep-sea habitats linked to the genetic population structure of a crustacean species in the Mediterranean Sea.

Marco Arculeo, Sabrina Lo Brutto, Anna Maria Deiana, Rita Cannas

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Abstract

The deep-sea habitat, from 200 to 2000 m depth, has long been thought as anecosystem where biotic and abiotic factors vary very little and consequentlyspecies are not disturbed by processes and phenomena which could promotefast evolutionary mechanisms. Unfortunately, biological information relating todeep water is limited, especially regarding the population genetics of speciesinhabiting the Mediterranean Sea, and general patterns cannot be inferred. Inthis study we report data on the population genetic structure of Aristeusantennatus, a deep-sea decapod crustacean species which has been widelystudied due to its important economic value. We surveyed and examined thevariation in a 369-bp fragment of the mtDNA control region from individualscaught by Spanish and Italian trawlers in eight localities. High levels of mitochondrialcontrol region haplotypic diversity (ranging from 0.884 to 0.989)were observed. AMOVA showed a high level of genetic variation, more withinthan between populations, and a low but significant FST value was recovered.Minimum spanning network did not separate any haplotype group and haplotypedistribution does not mirror the geographic origin of the samples. Theabsence of population substructuring was also observed with a principal coordinatesanalysis, which uses an individual-by-individual comparison. Theseresults revealed extensive gene flow among populations. Information on demographichistory based on mismatch analysis revealed an unstable population,showing an alternate pattern of growth and decline. Our results indicated thatin the western and central Mediterranean basins A. antennatus is a largepanmictic population with a fluctuating abundance. The absence of deep-seabarriers and adult migration may prevent the structuring of the species intogenetically differentiated populations.
Lingua originaleEnglish
pagine (da-a)354-365
Numero di pagine12
RivistaMarine Ecology
Volume30
Stato di pubblicazionePublished - 2009

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population genetics
population structure
crustacean
deep sea
Crustacea
biotic factor
habitat
habitats
genetic structure
gene flow
genetic variation
economics
basin
fishing boats
economic valuation
Mediterranean Sea
Decapoda
water
provenance
haplotypes

All Science Journal Classification (ASJC) codes

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

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title = "Environmental features of deep-sea habitats linked to the genetic population structure of a crustacean species in the Mediterranean Sea.",
abstract = "The deep-sea habitat, from 200 to 2000 m depth, has long been thought as anecosystem where biotic and abiotic factors vary very little and consequentlyspecies are not disturbed by processes and phenomena which could promotefast evolutionary mechanisms. Unfortunately, biological information relating todeep water is limited, especially regarding the population genetics of speciesinhabiting the Mediterranean Sea, and general patterns cannot be inferred. Inthis study we report data on the population genetic structure of Aristeusantennatus, a deep-sea decapod crustacean species which has been widelystudied due to its important economic value. We surveyed and examined thevariation in a 369-bp fragment of the mtDNA control region from individualscaught by Spanish and Italian trawlers in eight localities. High levels of mitochondrialcontrol region haplotypic diversity (ranging from 0.884 to 0.989)were observed. AMOVA showed a high level of genetic variation, more withinthan between populations, and a low but significant FST value was recovered.Minimum spanning network did not separate any haplotype group and haplotypedistribution does not mirror the geographic origin of the samples. Theabsence of population substructuring was also observed with a principal coordinatesanalysis, which uses an individual-by-individual comparison. Theseresults revealed extensive gene flow among populations. Information on demographichistory based on mismatch analysis revealed an unstable population,showing an alternate pattern of growth and decline. Our results indicated thatin the western and central Mediterranean basins A. antennatus is a largepanmictic population with a fluctuating abundance. The absence of deep-seabarriers and adult migration may prevent the structuring of the species intogenetically differentiated populations.",
keywords = "Aristeus antennatus, Decapoda, Mediterranean Sea, deep sea, mtDNA, population genetics.",
author = "Marco Arculeo and {Lo Brutto}, Sabrina and Deiana, {Anna Maria} and Rita Cannas",
year = "2009",
language = "English",
volume = "30",
pages = "354--365",
journal = "Marine Ecology",
issn = "0173-9565",
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TY - JOUR

T1 - Environmental features of deep-sea habitats linked to the genetic population structure of a crustacean species in the Mediterranean Sea.

AU - Arculeo, Marco

AU - Lo Brutto, Sabrina

AU - Deiana, Anna Maria

AU - Cannas, Rita

PY - 2009

Y1 - 2009

N2 - The deep-sea habitat, from 200 to 2000 m depth, has long been thought as anecosystem where biotic and abiotic factors vary very little and consequentlyspecies are not disturbed by processes and phenomena which could promotefast evolutionary mechanisms. Unfortunately, biological information relating todeep water is limited, especially regarding the population genetics of speciesinhabiting the Mediterranean Sea, and general patterns cannot be inferred. Inthis study we report data on the population genetic structure of Aristeusantennatus, a deep-sea decapod crustacean species which has been widelystudied due to its important economic value. We surveyed and examined thevariation in a 369-bp fragment of the mtDNA control region from individualscaught by Spanish and Italian trawlers in eight localities. High levels of mitochondrialcontrol region haplotypic diversity (ranging from 0.884 to 0.989)were observed. AMOVA showed a high level of genetic variation, more withinthan between populations, and a low but significant FST value was recovered.Minimum spanning network did not separate any haplotype group and haplotypedistribution does not mirror the geographic origin of the samples. Theabsence of population substructuring was also observed with a principal coordinatesanalysis, which uses an individual-by-individual comparison. Theseresults revealed extensive gene flow among populations. Information on demographichistory based on mismatch analysis revealed an unstable population,showing an alternate pattern of growth and decline. Our results indicated thatin the western and central Mediterranean basins A. antennatus is a largepanmictic population with a fluctuating abundance. The absence of deep-seabarriers and adult migration may prevent the structuring of the species intogenetically differentiated populations.

AB - The deep-sea habitat, from 200 to 2000 m depth, has long been thought as anecosystem where biotic and abiotic factors vary very little and consequentlyspecies are not disturbed by processes and phenomena which could promotefast evolutionary mechanisms. Unfortunately, biological information relating todeep water is limited, especially regarding the population genetics of speciesinhabiting the Mediterranean Sea, and general patterns cannot be inferred. Inthis study we report data on the population genetic structure of Aristeusantennatus, a deep-sea decapod crustacean species which has been widelystudied due to its important economic value. We surveyed and examined thevariation in a 369-bp fragment of the mtDNA control region from individualscaught by Spanish and Italian trawlers in eight localities. High levels of mitochondrialcontrol region haplotypic diversity (ranging from 0.884 to 0.989)were observed. AMOVA showed a high level of genetic variation, more withinthan between populations, and a low but significant FST value was recovered.Minimum spanning network did not separate any haplotype group and haplotypedistribution does not mirror the geographic origin of the samples. Theabsence of population substructuring was also observed with a principal coordinatesanalysis, which uses an individual-by-individual comparison. Theseresults revealed extensive gene flow among populations. Information on demographichistory based on mismatch analysis revealed an unstable population,showing an alternate pattern of growth and decline. Our results indicated thatin the western and central Mediterranean basins A. antennatus is a largepanmictic population with a fluctuating abundance. The absence of deep-seabarriers and adult migration may prevent the structuring of the species intogenetically differentiated populations.

KW - Aristeus antennatus

KW - Decapoda

KW - Mediterranean Sea

KW - deep sea

KW - mtDNA

KW - population genetics.

UR - http://hdl.handle.net/10447/51380

M3 - Article

VL - 30

SP - 354

EP - 365

JO - Marine Ecology

JF - Marine Ecology

SN - 0173-9565

ER -