Mitochondrial D-loop DNA analyses of Norway lobster (Nephrops norvegicus) reveals genetic isolation between Atlantic and East Mediterranean populations

Nephrops norvegicus is a commercially valuable demersal fisheries species. Relatively little is understood about this species’ population dynamics across its distribution with previous mitochondrial and microsatellite studies failing to identify significant population-level differentiation. In this...

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Bibliographic Details
Published in:Journal of the Marine Biological Association of the United Kingdom 2019-06, Vol.99 (4), p.933-940
Main Authors: Gallagher, Jeanne, Finarelli, John A., Jonasson, Jónas P., Carlsson, Jens
Format: Article
Language:English
Subjects:
Animal behavior
Commercial fishing
Crustaceans
Demersal fisheries
Deoxyribonucleic acid
Differentiation
Distribution
DNA
Fisheries
Fisheries management
Genetic isolation
Lobsters
Marine crustaceans
Microsatellites
Mitochondrial DNA
Nephrops norvegicus
Nucleotide sequence
Sexual isolation
Species
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Summary:Nephrops norvegicus is a commercially valuable demersal fisheries species. Relatively little is understood about this species’ population dynamics across its distribution with previous mitochondrial and microsatellite studies failing to identify significant population-level differentiation. In this study, sequence variation in the mitochondrial (mtDNA) D-loop was analysed from samples across the distribution range, and compared with COI sequences for this species retrieved from GenBank. Analysis of a 375 bp fragment of the D-loop revealed significant genetic differentiation between samples from the North-east Atlantic and the east Mediterranean (FST = 0.107, P < 0.001). Tau (τ), theta (θ0 and θ1) and Fu's FS values suggest the species spread between 10,500 to 19,000 ybp and subsequently expanded rapidly across the Atlantic.
ISSN:0025-3154
1469-7769
DOI:10.1017/S0025315418000929