Mitochondrial DNA variation in spiny lobster Palinurus delagoae suggests genetically structured populations in the southwestern Indian Ocean

Gopal, Keshni; Tolley, Krystal A.; Groeneveld, Johan C.; Matthee, Conrad A.

doi:10.3354/meps319191

Cited by 73 publications

(51 citation statements)

References 28 publications

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“…Whether the reduction and subsequent expansion of populations is related to changes in the availability of habitat, or is due to temperature and other abiotic factors, is as yet unknown. However, southern African fishes, as well as crustaceans, have been found to also share recent expansion signatures similar to that observed for Parechinus angulosus (Tolley et al 2005, Gopal et al 2006, von der Heyden et al 2010, and it is likely that this pattern extended into the southern Atlantic Ocean (von der ).…”

Section: Paleoclimate As An Agent Of Diversificationmentioning

confidence: 72%

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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Section: Paleoclimate As An Agent Of Diversificationmentioning

confidence: 72%

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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“…Population expansion postdating the Last Glacial Maxima (*20,000 ybp) has also been documented for other South African marine fauna such as spiny lobster Palinurus gilchristi (Tolley et al 2005), Palinurus delagoae (Gopal et al 2006), Cape hake Merluccius merluccius (von der Heyden et al 2007), Caffrogobius caffer (Neethling et al 2008) and Cape fur seal Arctocephalus pusillus pusillus . It demonstrates the profound influence that glaciations had on population structure and gene flow even on Southern Hemisphere species.…”

Section: Demographic Historymentioning

confidence: 99%

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

et al. 2010

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Over the past two decades, the South African abalone (Haliotis midae), has been under serious threat mainly due to overexploitation. To assure successful management and conservation of wild stocks, the consideration of species-specific evolutionary and population dynamic aspects is critical. In this study, eight microsatellites and 12 single nucleotide polymorphic loci (SNPs) were applied to determine genetic structure in nine populations sampled throughout the species' natural distribution range. It spans along three biogeographical regions of the South African coastline: temperate in the West coast, warm temperate in the South coast and subtropical in the East coast. Data analysis applying frequentist and Bayesian-based clustering methods indicated weak genetic differentiation between populations of the West, South and East coast. Spatial Bayesian inference further revealed clinal variation along a longitudinal gradient and a transitional zone in the South coast. Coalescent analysis of long-term migration showed restricted interchange among the sampling locations of the South coast while estimates of effective population size were comparable between coastal regions. Furthermore demographic analysis of microsatellite data suggested population expansion, probably reflecting range expansion that occurred following glacial retreat during the Pleistocene. Overall, population structure analysis suggested contemporary (hydrographical conditions) as well as historical (Pleistocene contraction of habitat) restrictions to gene flow. This study provides the foundation for the establishment of an integrated management policy for preserving the natural diversity and adaptive potential of H. midae.

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“…However, France and Kocher's (1996) work on a larger set of samples from this species suggests the alternative interpretation that this species is divergent across depth zones, but homogeneous within depth zones even over large geographic areas. There have also been genetic studies on orange roughy (Smith et al, 1986(Smith et al, , 2002, spiny lobster (Gopal et al, 2006), Patagonian toothfi sh (Rogers et al, 2006), and the deep-sea fi sh Helicolenus (Aboim et al, 2005), none of which have supported endemism.…”

Section: Genetic Evidencementioning

confidence: 99%

Biogeography and Biodiversity of Seamounts

Stocks¹,

Hart²

Seamounts: Ecology, Fisheries &Amp; Conservation

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This chapter evaluates the emergent community properties of biodiversity, endemism, and biogeography at seamounts. As with all deep-sea environments, the paucity of sampling, varying, and incompatible methods create problems, but certain patterns emerge, which differ between the pelagic and benthic components of the community. Pelagic fishes and plankton found over seamounts do not seem to be strongly differentiated from nearby oceanic pelagic communities. Abundances may vary, with certain species concentrated or depleted over a seamount, but the same suite of species is often found, and endemics (species restricted to one seamount or seamount chain) are not commonly reported. This indicates that the management of pelagic fisheries over seamounts should be within the context of a regional or stock-wide management plan. It also raises the potential for bioregionalization schemes, such as Longhurst's pelagic provinces, to be used to categorize seamount communities globally, for use in management and to prioritize future research. The benthic community of fishes and invertebrates, in contrast, can differ more strongly from either the surrounding deep seafloor or nearby continental margins of similar depth. Rates of endemism between 10% and 50% have been reported in medium and large-scale studies, though these numbers will likely change with more deep-sea sampling. Overall benthic abundances are often elevated on seamounts compared to soft-sediment deep-sea communities, though there is no clear trend towards seamounts supporting either an elevated or a depressed number of species (species richness) compared to the deep sea or an continental margins. Biogeographically, when endemic species are not considered, the seamounts appear to support a subset of the regional species pool. However, the rates of endemism are high enough, and the types of communities supported are distinct enough, that categorizing the benthic communities on seamounts by the larger biogeographic region they fall within may not be a useful approach. It also indicates that seamounts need to be recognized and managed as distinct habitat types, and not simply as part of a larger region.

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Mitochondrial DNA variation in spiny lobster Palinurus delagoae suggests genetically structured populations in the southwestern Indian Ocean

Cited by 73 publications

References 28 publications

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

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

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

Biogeography and Biodiversity of Seamounts

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