A review of marine phylogeography in southern Africa

Teske, Peter R.; Heyden, Sophie von der; McQuaid, Christopher D.; Barker, Nigel P.

doi:10.4102/sajs.v107i5/6.514

Cited by 159 publications

(234 citation statements)

References 117 publications

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“…Therefore, a study that included twenty species (fishes, crustaceans, corals, echinoderms and molluscs) with different life history characteristics (broadcast spawning, brooding and live-bearing; see von der Heyden 2009) compared their population genetic patterns across this region. Most species analyzed showed at least one clear phylogeographic break across the range sampled, yet not all species showed the same breaks (Teske et al 2011). A similar finding comes from a comparison of 27 species in Hawaii, where strong congruent patterns of genetic differentiation emerged, but no single species in the comparative analysis showed the emergent multispecies pattern .…”

Section: Genetic Tools That Identify Both Sides Of the Dispersal-retesupporting

confidence: 59%

The application of genetics to marine management and conservation: examples from the Indo-Pacific

Heyden¹,

Beger²,

Toonen³

et al. 2014

BMS

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ABSTRACT.-Molecular tools and analyses have played pivotal roles in uncovering the processes and patterns of biodiversity in the Indian and Pacific oceans. However, integrating genetic results into management and conservation objectives has been challenging, with few examples that show practical applicability. This review aims to address some of the perceived barriers to an enhanced approach that integrates molecular data into management and conservation goals, by reviewing papers relevant to both conservation and fisheries management in the Indo-Pacific region, particularly with respect to phylogeography, connectivity, and species identification, as well as stock delineation, restoration of depleted wild stocks, mislabeled marine resources and "molecular forensics." We also highlight case studies from each of these areas that illustrate how molecular analyses are relevant to conservation and management in the IndoPacific, spanning a variety of vertebrate and invertebrate species. We discuss the application of genetic data to the design and evaluation of the effectiveness of marine protected area networks, stock delineation, and restoration and the usage of exclusion tests and parentage analyses for fisheries management. We conclude that there is a distinct need for increasing public awareness and ownership of genetically unique lineages and, ultimately, the increased inclusion of genetic research into management policy and conservation. Finally, we make a case for the importance of clear and effective communication for promoting public awareness, public ownership, and for achieving conservation goals within the region.

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Section: Genetic Tools That Identify Both Sides Of the Dispersal-retesupporting

confidence: 59%

The application of genetics to marine management and conservation: examples from the Indo-Pacific

Heyden¹,

Beger²,

Toonen³

et al. 2014

BMS

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“…Silva, Mesquita & Paula, 2010a), the information obtained from mtDNA alone is not always enough to infer population structure completely, due to its haploid and uniparental inheritance (Teske et al, 2011). It would be interesting for further study to use larger samples and multiple and more sensitive markers, to test whether the pattern of genetic structure obtained in this study is confirmed.…”

Section: Population Genetic Differentiation and Mismatch Distributionmentioning

confidence: 99%

Genetic erosion in the snailLittoraria subvittata(Reid, 1986) due to mangrove deforestation

2016

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In tropical coastal ecosystems mangrove forests are important as feeding, spawning, breeding and nursery grounds for many marine species. High human population pressure in coastal areas has led to the loss and deterioration of mangrove habitats. Solar salt production can affect these habitats along the East African coast. Littorinid snails live on mangrove trees, forming an important component of the mangrove ecosystem and have been used as bioindicators of environmental health and community stress. Littoraria subvittata is the most abundant littorinid species in mangroves along the East African coast. Partial mitochondrial cytochrome oxidase subunit 1 (COI) gene sequences of 298 individuals were used to assess the impact of mangrove deforestation at salt ponds on the genetic diversity and structuring of L. subvittata populations, as well as to infer the demographic history of the species. Nucleotide and haplotype diversities were found to be lower in samples from mangroves at salt ponds than in samples from natural mangroves. The mean nucleotide diversity was 0.049 ± 0.036% and 0.115 ± 0.068% in mangroves at salt ponds and natural mangroves, respectively. The mean haplotype diversity was 0.23 ± 0.14 and 0.50 ± 0.14 in mangroves at salt ponds and natural mangroves, respectively. Analysis of molecular variance (AMOVA) detected a significant population structure (Ф st = 0.049; P < 0.0001) for the combined populations. Hierarchical AMOVA detected a significant population genetic structure only between populations from mangroves at salt ponds and natural mangroves (Φ ct = 0.022; P < 0.05), but not between any other groupings. Populations from natural mangrove sites showed a significant genetic structure (Ф st = 0.054, P < 0.0001), while populations from sites at salt ponds could not be differentiated (Ф st = −0.0026, P = 0.64). Reduced effective population size was observed in most samples from mangrove sites at salt ponds compared with natural mangrove. The direction of migrants was mostly from salt ponds to natural mangroves. These results show that salt ponds have a negative impact on the genetic diversity of L. subvittata populations and modify the population's genetic structure.

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“…Jacobs et al 2004, González-Wevar et al 2010, Marko et al 2010, Teske et al 2011. For example, Lessios et al (2001) illustrate the importance of glaciation (changes in sea levels with associated variation in oceanic currents) in the historic distribution of sea urchins; however, a recent comprehensive review indicted that such a situation is more complex (Marco et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Oceanic circulation, local upwelling and palaeoclimatic changes linked to the phylogeography of the Cape sea urchin Parechinus angulosus

Muller¹,

Heyden²,

Bowie³

et al. 2012

Mar. Ecol. Prog. Ser.

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To enhance our current understanding of the evolution of intertidal marine species, we investigated the phylogeographic population structure of the Cape sea urchin Parechinus angulosus using cytochrome c oxidase subunit I (COI) mitochondrial and receptor for egg jelly protein 9 (SpREJ9) nuclear DNA (nDNA) sequence data. The species shows variation in colour form, has a wide distribution along the southern African coastline, a broadcast mode of reproduction and probably a fairly long post larval development. Despite the prediction that species with such life history traits will show shallow genetic differentiation among sampling sites, high levels of population differentiation were obtained among many of the 18 sampling localities. The trend was particularly strong along the west coast Namaqua biogeographic province of southern Africa where the structure was also correlated with local upwelling. Larval dispersal broadly corresponded with oceanic currents and 2 distinct geographic genetic groupings were detected. The first grouping represents most individuals sampled along the cool temperate west coast, while the second comprises individuals sampled from the south and east coasts of southern Africa. The genetic separation of P. angulosus individuals is in the vicinity of a recognized biogeographic barrier (Cape Point), and is supported by geneflow analyses, parsimony haplotype networks for both nDNA and mtDNA data, and a mtDNA Bayesian analyses of population structure. Expansion events for the Cape sea urchin, and the divergence time estimates between the 2 assemblages, centre around the last glacial maximum and provide substantial support that glaciations and associated lowering and rising of sea levels significantly affected marine rocky shore organisms along the southern African coastline.KEY WORDS: Southern Africa · Echinodermata · Phylogeography · Geneflow · Sea-level change · SpREJ · mtDNA COI Resale or republication not permitted without written consent of the publisher

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A review of marine phylogeography in southern Africa

Cited by 159 publications

References 117 publications

The application of genetics to marine management and conservation: examples from the Indo-Pacific

The application of genetics to marine management and conservation: examples from the Indo-Pacific

Genetic erosion in the snailLittoraria subvittata(Reid, 1986) due to mangrove deforestation

Oceanic circulation, local upwelling and palaeoclimatic changes linked to the phylogeography of the Cape sea urchin Parechinus angulosus

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