Genetic connectivity and historical demography of the blue barred parrotfish (Scarus ghobban) in the western Indian Ocean

Visram, S.; Yang, Ming; Pillay, Ruby Moothien; Said, Sadri A.; Henriksson, Oskar; Grahn, Mats; Chen, Chaolun Allen

doi:10.1007/s00227-010-1422-8

Cited by 44 publications

(44 citation statements)

References 72 publications

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“…It seems likely that the Kenyan locality had undergone a different history of colonisation, maybe a secondary event from a restricted SWIO stock with drift due to a founder effect that has created this particular pattern. Mitochondrial differentiation of the northern localities (Kenya and Seychelles versus Tanzania and Mauritius) has also been identified for Scarus ghobban (Visram et al 2010). Further investigations in this area would confirm the historical role of the biogeographic ARAB/EAFR boundary (Longhurst 1998) as a potential barrier to gene flow.…”

Section: Restricted Connectivity Between Localities Of the Swiomentioning

confidence: 72%

“…The northward branch of the SEC splits at the northern tip of Madagascar (near 10°S) into the northward East African Coastal Current and a southward current that supplies a succession of eddies in the Mozambique Channel (consult Schott et al (2009) for a diagrammatical presentation of this system). This hydrodynamic system occurring in the Mozambique Channel could greatly influence connectivity between populations, as was reported for the coral Pocillopora verrucosa (Ridgway et al 2001) or the parrot fish Scarus ghobban (Visram et al 2010). But, as recently emphasized (Ridgway & Sampayo 2005, Gaither et al 2010, very few genetic studies are available in the SWIO, and it is impossible to draw general conclusions about patterns of connectivity of marine life in the SWIO.…”

Section: Introductionmentioning

confidence: 98%

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Restricted dispersal of the reef fish Myripristis berndti at the scale of the SW Indian Ocean

Tessier¹,

Gouws²,

Craig³

et al. 2011

Mar. Ecol. Prog. Ser.

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The reef fish Myripristis berndti (Jordan & Everman 1903) is a pantropical species. A genetic analysis was conducted on 353 individuals from 10 localities distributed across the SW Indian Ocean (SWIO) in order to determine patterns of connectivity in the SWIO. Both the mtDNA sequences (711-bp cytochrome b sequences) and the microsatellites (8 newly developed loci) reveal spatial patterns of differentiation within the SWIO. There is, however, a discrepancy between the structure observed with each kind of marker. MtDNA revealed that 3 peripheral populations (NW Kenya, SE Reunion, and SW Europa) were isolated from the 7 more central populations, which form a more densely connected population network, while microsatellite data indicated a more restricted connectivity with significant differentiation between most pairs of localities. Higher genetic differences between Reunion and Europa were found, which might be explained by geography and isolation by distance pattern. In contrast, the genetic signature of Kenya -the most divergent locality identified by mtDNA basis but not with microsatellite -was probably the consequence of a particular colonisation history. These results indicate a much more restricted connectivity than previously thought for this species.KEY WORDS: mtDNA · Microsatellite · Marine fish · SW Indian Ocean · ConnectivityResale or republication not permitted without written consent of the publisher

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Section: Restricted Connectivity Between Localities Of the Swiomentioning

confidence: 72%

Section: Introductionmentioning

confidence: 98%

Restricted dispersal of the reef fish Myripristis berndti at the scale of the SW Indian Ocean

Tessier¹,

Gouws²,

Craig³

et al. 2011

Mar. Ecol. Prog. Ser.

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“…In general, low sample size weakens the ability to detect genetic structuring. However, even the use of large sample sizes still showed no genetic structuring for many marine fishes (Purcell et al 2006;Curley and Gillings 2009;Christie et al 2010;Evans et al 2010;Teske et al 2010;Visram et al 2010;Saenz-Agudelo et al 2011;Veilleux et al 2011)-see Supplementary material. In addition, even with low sample size, the observed high gene flow and absence of genetic structuring for our three study species is valid, given the circumstances in the study such as (1) biology of the species studied, (2) water circulation, and (3) absence of barrier in the study area.…”

Section: Discussionmentioning

confidence: 97%

“…Population genetic studies can help elucidate population structure and genetic relatedness of species spread across space (Planes et al 2009;Winters et al 2010) and the genetic exchanges amongst those populations (Bay et al 2008;Visram et al 2010). In addition, population genetic studies can provide (1) insights into the evolutionary and ecological spatiotemporal structuring of populations (Gaither et al 2011) and (2) estimates of genetic diversity of populations (i.e.…”

Section: Introductionmentioning

confidence: 99%

High gene flow in reef fishes and its implications for ad-hoc no-take marine reserves

Matias

Anticamara²,

Quilang

2013

Mitochondrial DNA

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Integration of genetic connectivity information in effective marine reserve (MR) design is important in sustaining marine biodiversity. Here, genetic connectivity based on mitochondrial DNA (mtDNA) of three reef fish species, namely Epinephelus merra (n = 67; 32 from Bolinao, 14 from Alaminos, and 21 from Masinloc), Parupeneus multifasciatus (n = 23; 12 from Bolinao and 11 from Masinloc), and Odonus niger (n = 35; 21 from Mabini and 14 from Tingloy), sampled across western Luzon, Philippines, was inferred by assessing their genetic diversity, population genetic structure, and historical demography. The results show high haplotype and nucleotide diversity in the three species. Tests for population structure indicate high gene flow and no spatial genetic structuring for the three species. Mismatch analyses suggest unimodal distribution for E. merra and P. multifasciatus, but bimodal distribution for O. niger. Even with differences in mismatch distributions, all the three species exhibit low raggedness index indicating demographic population expansion. The bimodal distribution of O. niger could be attributed to the mixing of two isolated populations. High gene flow between sampling locations implies genetic exchanges and connectivity between many small MRs and fishing grounds in western Luzon, Philippines, at a scale similar to our study. This research is among the first few to elucidate the high genetic connectivity of reef fish communities across the Philippines (here western Luzon), but it also calls for more support (i.e. government and academia) for genetic research that aims to (1) understand the maintenance of megadiversity of the country and (2) search for effective biodiversity conservation options for the coral reefs.

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“…It is well known that larvae of marine species can accumulate at fronts (Roughgarden et al, 1991). Regional currents, as well as secondary or indirect currents, are also important (Visram et al, 2010). As our understanding of ocean physics improves, the role of advection and diffusion in larval dispersal is also beginning to be appreciated (Largier, 2003).…”

Section: Genetics: From Phylogeography To Molecular Ecologymentioning

confidence: 99%

Biogeography and Population Connectivity of Coral Reef Fishes

Morrison¹,

Sandin²

2011

Changing Diversity in Changing Environment

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Genetic connectivity and historical demography of the blue barred parrotfish (Scarus ghobban) in the western Indian Ocean

Cited by 44 publications

References 72 publications

Restricted dispersal of the reef fish Myripristis berndti at the scale of the SW Indian Ocean

Restricted dispersal of the reef fish Myripristis berndti at the scale of the SW Indian Ocean

High gene flow in reef fishes and its implications for ad-hoc no-take marine reserves

Biogeography and Population Connectivity of Coral Reef Fishes

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