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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.contributor.authorvon der Heyden S.
dc.contributor.authorLipinski M.R.
dc.contributor.authorMatthee C.A.
dc.date.accessioned2011-05-15T15:57:21Z
dc.date.available2011-05-15T15:57:21Z
dc.date.issued2007
dc.identifier.citationMolecular Phylogenetics and Evolution
dc.identifier.citation42
dc.identifier.citation2
dc.identifier.issn10557903
dc.identifier.other10.1016/j.ympev.2006.08.004
dc.identifier.urihttp://hdl.handle.net/10019.1/10355
dc.description.abstractThe 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.subjectmitochondrial DNA
dc.subjectanimal
dc.subjectarticle
dc.subjectbiodiversity
dc.subjectbiological model
dc.subjectchemistry
dc.subjectclassification
dc.subjectDNA sequence
dc.subjectGadiformes
dc.subjectgenetic variability
dc.subjectgenetics
dc.subjectgeography
dc.subjectgrowth, development and aging
dc.subjecthaplotype
dc.subjectmolecular evolution
dc.subjectmolecular genetics
dc.subjectmultivariate analysis
dc.subjectNamibia
dc.subjectnucleotide sequence
dc.subjectphylogeny
dc.subjectSouth Africa
dc.subjectAnimals
dc.subjectBiodiversity
dc.subjectDNA, Mitochondrial
dc.subjectEvolution, Molecular
dc.subjectGadiformes
dc.subjectGeography
dc.subjectHaplotypes
dc.subjectModels, Genetic
dc.subjectMolecular Sequence Data
dc.subjectMultivariate Analysis
dc.subjectNamibia
dc.subjectPhylogeny
dc.subjectSequence Analysis, DNA
dc.subjectSouth Africa
dc.subjectVariation (Genetics)
dc.subjectMerluccius
dc.subjectMerluccius capensis
dc.subjectMerluccius paradoxus
dc.titleMitochondrial DNA analyses of the Cape hakes reveal an expanding, panmictic population for Merluccius capensis and population structuring for mature fish in Merluccius paradoxus
dc.typeArticle
dc.description.versionArticle


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