Mitochondrial DNA analyses of the Cape hakes reveal an expanding, panmictic population for Merluccius capensis and population structuring for mature fish in Merluccius paradoxus

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dc.contributor.author von der Heyden S.
dc.contributor.author Lipinski M.R.
dc.contributor.author Matthee C.A.
dc.date.accessioned 2011-05-15T15:57:21Z
dc.date.available 2011-05-15T15:57:21Z
dc.date.issued 2007
dc.identifier.citation Molecular Phylogenetics and Evolution
dc.identifier.citation 42
dc.identifier.citation 2
dc.identifier.issn 10557903
dc.identifier.other 10.1016/j.ympev.2006.08.004
dc.identifier.uri http://hdl.handle.net/10019.1/10355
dc.description.abstract The Cape hake species, Merluccius capensis and Merluccius paradoxus are the most important resource of the South African and Namibian demersal fishery, but it is unclear whether there is a single population of each shared by both countries. We analysed the population structure and evolutionary history of these two species using the variable 5′ region of the mtDNA control region for 311 specimens of M. capensis and 333 specimens of M. paradoxus sampled between Lüderitz (southern Namibia) to south of Cape Point (South Africa). 107 haplotypes for M. capensis and eight haplotypes for M. paradoxus were recovered. AMOVA and pairwise Φst analyses revealed no structure in M. capensis, however significant genetic differentiation between Namibian and South African 'populations' was detected for M. paradoxus. This was only restricted to mature fish older than 3 and 4 years and not for juvenile fish younger than 3 years. Analyses reveal that M. capensis has undergone population expansion (Fu's Fs = -26.65, P < 0.001), possibly within the last 4500-23,000 years, whereas M. paradoxus has not. Our study highlights the utility of genetic markers to unravel the evolutionary history of sympatric species, as well as addressing management issues within regions where commercially valuable fish stocks are shared between nations. © 2006 Elsevier Inc. All rights reserved.
dc.subject mitochondrial DNA
dc.subject animal
dc.subject article
dc.subject biodiversity
dc.subject biological model
dc.subject chemistry
dc.subject classification
dc.subject DNA sequence
dc.subject Gadiformes
dc.subject genetic variability
dc.subject genetics
dc.subject geography
dc.subject growth, development and aging
dc.subject haplotype
dc.subject molecular evolution
dc.subject molecular genetics
dc.subject multivariate analysis
dc.subject Namibia
dc.subject nucleotide sequence
dc.subject phylogeny
dc.subject South Africa
dc.subject Animals
dc.subject Biodiversity
dc.subject DNA, Mitochondrial
dc.subject Evolution, Molecular
dc.subject Gadiformes
dc.subject Geography
dc.subject Haplotypes
dc.subject Models, Genetic
dc.subject Molecular Sequence Data
dc.subject Multivariate Analysis
dc.subject Namibia
dc.subject Phylogeny
dc.subject Sequence Analysis, DNA
dc.subject South Africa
dc.subject Variation (Genetics)
dc.subject Merluccius
dc.subject Merluccius capensis
dc.subject Merluccius paradoxus
dc.title Mitochondrial DNA analyses of the Cape hakes reveal an expanding, panmictic population for Merluccius capensis and population structuring for mature fish in Merluccius paradoxus
dc.type Article
dc.description.version Article


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