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Cuesta, José A.

doi:10.1023/a:1026576614590

Cited by 27 publications

(10 citation statements)

References 13 publications

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“…Pachygrapsus marmoratus planktonic larvae seem to have a high dispersive capacity, characteristic of many marine invertebrates. Zoeae spend around one month offshore, going through at least six development stages (Cuesta & Rodríguez 2000). Movement of juveniles and adults of P. marmoratus is not expected to homogenize populations.…”

Section: Discussionmentioning

confidence: 99%

“…Despite its high dispersal capacity, this grapsid species represents a good model to test for population subdivision, because of its local abundance and the accumulated knowledge of its development, ecology and genetics (Cannicci et al 1999(Cannicci et al , 2002Cuesta & Rodríguez 2000;Ingle & Clark 2006;Fratini et al 2008Fratini et al , 2011Fratini et al , 2013Silva & Paula 2008;Ferreira Silva et al 2009;Silva et al 2009aSilva et al , 2009b. Factors expected to promote genetic homogeneity in this species include high fecundity (Flores & Paula 2002), a planktonic larval period that can last more than four weeks (Cuesta & Rodríguez 2000;Cuesta et al 2011), and a continuous coastal distribution throughout the Mediterranean Sea, Black Sea and northeastern Atlantic coast from Brittany to Morocco, including the Canary Islands, the Azores and Madeira (Ingle 1980). Previous studies on P. marmoratus revealed different patterns of mitochondrial and nuclear DNA variation and suggested relatively complex local genetic structure (Fratini et al 2008(Fratini et al , 2011(Fratini et al , 2013Silva et al 2009b).…”

Section: Introductionmentioning

confidence: 99%

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Phylogeography of the marbled crabPachygrapsus marmoratus(Decapoda, Grapsidae) along part of the African Mediterranean coast reveals genetic homogeneity across the Siculo-Tunisian Strait versus heterogeneity across the Gibraltar Strait

Deli

Fratini

Ragionieri

et al. 2016

Marine Biology Research

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We investigate the influence of previously postulated biogeographic barriers in the Mediterranean Sea on the population genetic structure of a highly dispersive and continuously distributed coastal species. In particular, we examine nuclear and mitochondrial genetic variation in the marbled crab, Pachygrapsus marmoratus, across part of the African Mediterranean coast in order to assess the influence of the Siculo-Tunisian Strait on its population genetic structure. Four polymorphic microsatellite loci were genotyped for 110 individuals, collected from eight locations covering parts of the Algerian, Tunisian and Libyan coasts. In addition, mtDNA corresponding to the Cox1 gene was sequenced for 80 samples. The corresponding results show contrasting patterns of genetic differentiation. While mtDNA results revealed a homogeneous haplotype composition in our study area, microsatellite data depicted genetic differentiation among populations, but not associated with any geographic barrier. This pattern, already recorded for this species from different geographic regions, may hint at the involvement of a complex series of abiotic and biotic factors in determining genetic structure. Demographic history reconstruction, inferred from mtDNA data, supports demographic and spatial expansion for the North African metapopulation dating back to the Mid-Pleistocene and following an historical bottleneck. Comparison of these African mitochondrial sequences with new sequences from a Turkish population and previously published sequences revealed a weak but significant separation of Atlantic and Mediterranean populations across the Gibraltar Strait, which was not recorded in previous studies of this grapsid species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phylogeography of the marbled crabPachygrapsus marmoratus(Decapoda, Grapsidae) along part of the African Mediterranean coast reveals genetic homogeneity across the Siculo-Tunisian Strait versus heterogeneity across the Gibraltar Strait

Deli

Fratini

Ragionieri

et al. 2016

Marine Biology Research

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“…Notwithstanding its huge distribution range, the species’ suitable habitats over the entire distribution range are locally separated by extensive stretches of sandy beaches. Adults are relatively sedentary [18], and thus connectivity among populations is maintained by the larval stages, developing for about four weeks in the water column [19] before the megalopa re-colonises the coastal habitat. Sequence variation of the mitochondrial DNA (mtDNA) so far indicated rather high levels of genetic exchange in the species at meso-geographic scales, with a weak separation among Atlantic and Mediterranean populations and lack of differentiation within the Mediterranean Sea [20, 21].…”

Section: Introductionmentioning

confidence: 99%

Unravelling population genetic structure with mitochondrial DNA in a notional panmictic coastal crab species: sample size makes the difference

et al. 2016

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BackgroundThe extent of genetic structure of a species is determined by the amount of current gene flow and the impact of historical and demographic factors. Most marine invertebrates have planktonic larvae and consequently wide potential dispersal, so that genetic uniformity should be common. However, phylogeographic investigations reveal that panmixia is rare in the marine realm. Phylogeographic patterns commonly coincide with geographic transitions acting as barriers to gene flow. In the Mediterranean Sea and adjoining areas, the best known barriers are the Atlantic-Mediterranean transition, the Siculo-Tunisian Strait and the boundary between Aegean and Black seas. Here, we perform the so far broadest phylogeographic analysis of the crab Pachygrapsus marmoratus, common across the north-eastern Atlantic Ocean, Mediterranean and Black seas. Previous studies revealed no or weak genetic structuring at meso-geographic scale based on mtDNA, while genetic heterogeneity at local scale was recorded with microsatellites, even if without clear geographic patterns. Continuing the search for phylogeographic signal, we here enlarge the mtDNA dataset including 51 populations and covering most of the species’ distribution range.ResultsThis enlarged dataset provides new evidence of three genetically separable groups, corresponding to the Portuguese Atlantic Ocean, Mediterranean Sea plus Canary Islands, and Black Sea. Surprisingly, hierarchical AMOVA and Principal Coordinates Analysis agree that our Canary Islands population is closer to western Mediterranean populations than to mainland Portugal and Azores populations. Within the Mediterranean Sea, we record genetic homogeneity, suggesting that population connectivity is unaffected by the transition between the western and eastern Mediterranean. The Mediterranean metapopulation seems to have experienced a relatively recent expansion around 100,000 years ago.ConclusionsOur results suggest that the phylogeographic pattern of P. marmoratus is shaped by the geological history of Mediterranean and adjacent seas, restricted current gene flow among different marginal seas, and incomplete lineage sorting. However, they also caution from exclusively testing well-known biogeographic barriers, thereby neglecting other possible phylogeographic patterns. Mostly, this study provides evidence that a geographically exhaustive dataset is necessary to detect shallow phylogeographic structure within widespread marine species with larval dispersal, questioning all studies where species have been categorized as panmictic based on numerically and geographically limited datasets.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-016-0720-2) contains supplementary material, which is available to authorized users.

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“…It is therefore possible that P. pollicipes arrived with C. erythropus in 2014, following the same rare hydrological conditions. The larvae of Pachygrapsus marmoratus and Eriphia verrucose are decapods whose range currently extends no further north than Brittany, and take 30 and 40 days to develop, respectively (Lumare and Gozzo 1972;Cuesta and Rodríguez 2000). Our results suggest that P. marmoratus and E. verrucose may reach the UK via larval dispersal in the future.…”

Section: Discussionmentioning

confidence: 65%

The range expansion of Clibanarius erythropus to the UK suggests that other range-shifting intertidal species may not follow

2022

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The ranges of species are shifting as a consequence of anthropogenic climate change. In the marine realm biogeographic transition zones could form barriers to dispersal and inhibit range-shift, but little is known about this potential effect. The hermit crab Clibanarius erythropus appeared in the UK in 2016 with the nearest reproducing population being on the northern coast of Brittany. This raises questions of which conditions may have permitted C. erythropus to cross the English Channel (7.25°W, 49.00°N) and whether this barrier could be overcome by other intertidal species. Dispersal simulations suggest the larvae of C. erythropus arrived in 2014, originated from North Brittany, experienced a mean temperature of around 16 °C, and took longer than 20 days to be transported across the channel. The transportation of larvae from Brittany to the southwest UK appears to be rare and driven by occasional, unusual ocean currents. The English Channel may continue to prevent species with pelagic larvae that settle within 20 days, such as many species of gastropod, annelids, and macroalgae, from successfully range expanding to the UK. North Brittany was the only landmass from which it is feasible the UK population of C. erythropus could have originated. Therefore, species with long-lived pelagic larvae but without reproducing populations in North Brittany may not appear in the southwest UK until the species are established in North Brittany. The English Channel could continue to limit the ability of many intertidal species to shift their range with climate change.

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Cited by 27 publications

References 13 publications

Phylogeography of the marbled crabPachygrapsus marmoratus(Decapoda, Grapsidae) along part of the African Mediterranean coast reveals genetic homogeneity across the Siculo-Tunisian Strait versus heterogeneity across the Gibraltar Strait

Phylogeography of the marbled crabPachygrapsus marmoratus(Decapoda, Grapsidae) along part of the African Mediterranean coast reveals genetic homogeneity across the Siculo-Tunisian Strait versus heterogeneity across the Gibraltar Strait

Unravelling population genetic structure with mitochondrial DNA in a notional panmictic coastal crab species: sample size makes the difference

The range expansion of Clibanarius erythropus to the UK suggests that other range-shifting intertidal species may not follow

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