Population genetic structure of the perlemoen Haliotis midae in South Africa: evidence of range expansion and founder events
TLDR
It is concluded that populations of H. midae on either side of Cape Agulhas represent 2 independent reproductive stocks, and the area of transition between the stocks coincides with oceanographic features of the region.Abstract:
Genetic diversity in Haliotis midae, a highly valued and heavily exploited marine gastropod, was assessed using 3 marker types across samples from the species' range in South Africa. Variation was compared at 7 allozyme loci, 2 regions of mitochondrial DNA and 3 microsatellite loci. We conclude that populations of H. midae on either side of Cape Agulhas represent 2 independent reproductive stocks. The area of transition between the stocks coincides with oceanographic features of the region. Evidence from all 3 types of genetic marker indicates an isolated introduction event to the east of Cape Agulhas, and subsequent range expansion in an easterly direction. The disparity between allozyme data and the other 2 forms is seen as further evidence for the presence of balanc- ing selection at allozyme loci.read more
Citations
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Population genetics, larval dispersal, and connectivity in marine systems
TL;DR: A meta-analysis refutes recent reviews and conventional wisdom that pelagic larval duration (PLD) is a good predictor of the magnitude of gene flow and geo- graphic scale of population structure in marine systems.
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A review of marine phylogeography in southern Africa
TL;DR: This review describes the state of marine phylogeography in southern Africa, that is, the study of evolutionary relationships at the species level, or amongst closely related species, in relation to the region’s marine environment, and focuses particularly on coastal phylegeography.
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Genetic differentiation in relation to marine landscape in a broadcast‐spawning bivalve mollusc (Placopecten magellanicus)
TL;DR: A landscape genetic approach was used to detect areas of low gene flow using a joint analysis of spatial and genetic information, and a novel approach of using particle tracking software to mimic scallop larval dispersal was employed to interpret within‐region genetic patterns.
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Implications of life history for genetic structure and migration rates of southern African coastal invertebrates: planktonic, abbreviated and direct development
Peter R. Teske,Isabelle Papadopoulos,Isabelle Papadopoulos,Gerardo I. Zardi,Christopher D. McQuaid,Max Edkins,Charles L. Griffiths,Nigel P. Barker +7 more
TL;DR: The amount of genetic structure within marine biogeographic regions strongly depends on the presence or absence of free-swimming larvae, and whether or not they are capable of active dispersal seems to have little effect on connectivity among populations.
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Impacts of marine biogeographic boundaries on phylogeographic patterns of three South African estuarine crustaceans
TL;DR: Ecological factors and modes of dispersal are likely to have played a role in both cladogenesis of the different lineages and in the establishment of their present-day distribution patterns.
References
More filters
Journal ArticleDOI
A sharper Bonferroni procedure for multiple tests of significance
TL;DR: In this article, a simple procedure for multiple tests of significance based on individual p-values is derived, which is sharper than Holm's (1979) sequentially rejective procedure.
Journal ArticleDOI
A measure of population subdivision based on microsatellite allele frequencies.
TL;DR: It was found that, under the generalized stepwise mutation model, R( ST) provides relatively unbiased estimates of migration rates and times of population divergence while F(ST) tends to show too much population similarity, particularly when migration rates are low or divergence times are long.
Journal ArticleDOI
Molecular Markers, Natural History and Evolution.
A. C. M. Gillies,John C. Avise +1 more