Phylogeographic patterns of decapod crustaceans at the Atlantic–Mediterranean transition

García-Merchán, Víctor Hugo; Robainas-Barcia, Aymée; Abelló, Pere; Macpherson, Enrique; Palero, Ferran; García–Rodríguez, M.; Sola, Luís Gil de; Pascual, Marta

doi:10.1016/j.ympev.2011.11.009

Cited by 61 publications

(90 citation statements)

References 60 publications

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“…River basin boundaries match with the spatial genetic variation in the freshwater atyid species, which are physiologically unable to colonize other river basins through the sea. This pattern contrasts sharply with the population genetic patterns observed in marine crustacean decapods from the same area (García-Merchán et al, 2012). In this way, mountain formation would be the main historic factor determining the biogeography of Iberian caridean freshwater species, as reported for other taxonomic groups (e.g., European amphibians and reptiles: Filipe et al, 2009;Araújo et al, 2008).…”

Section: Geographical and Genetic Patterns Of Variation In Caridean Smentioning

confidence: 55%

A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers

González‐Ortegón

Palero

Lejeusne

et al. 2016

Science of The Total Environment

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Section: Geographical and Genetic Patterns Of Variation In Caridean Smentioning

confidence: 55%

A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers

González‐Ortegón

Palero

Lejeusne

et al. 2016

Science of The Total Environment

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“…The two Atlantic species presented higher sequence similarity compared with I. perplexum suggesting the occurrence of a biogeographical barrier. Previous studies on fishes and crustaceans have shown the effect of three putative barriers to gene flow between the Atlantic and the Mediterranean: Strait of Gibraltar, Almeria-Oran Front and Ibiza Channel (Garcia-Merchan et al 2012). The level of divergence among COI sequences from the three Isorropodon species is within the range of values documented between distinct populations of the species Archivesica gigas which may, in fact, be a species complex (Osborn 2001).…”

Section: Host Characterizationmentioning

confidence: 68%

The smaller vesicomyid bivalves in the genus Isorropodon (Bivalvia, Vesicomyidae, Pliocardiinae) also harbour chemoautotrophic symbionts

et al. 2012

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Species of Isorropodon are vesicomyid bivalves for which little information is available regarding host phylogeny and bacterial symbioses. In this study we investigated the symbioses in three Isorropodon species from three cold seep areas: Isorropodon bigoti (Gulf of Guinea), Isorropodon megadesmus (Gulf of Cadiz) and Isorropodon perplexum (Eastern Mediterranean). Analysis of bacterial 16S ribosomal RNA gene sequences demonstrated that each vesicomyid species harbours a single symbiont phylotype, that symbionts from the three species cluster together, and that they are closely related to other known vesicomyid symbionts. These results are confirmed by other marker genes (encoding 23S rRNA and APS reductase) and by fluorescence in situ hybridization. Due to their extended depth range and transoceanic distribution Isorropodon species are interesting examples to further study evolutionary processes in bivalve hosts and their associated symbionts.

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“…Among the species with a high potential for gene flow there are also decapod Crustacea of the Mediterranean Sea and the north-eastern Atlantic. For example, shallow subtidal crabs of the genus Xantho [53, 54] and Pilumnus [55], the hermit crabs Pagurus excavatus and P. alatus [56], and the pelagic shrimps Parapeneus longirostris and Plesionika heterocarpus [56] show little or no geographic structure within their distribution range. Pachygrapsus marmoratu s is another example of species for which genetic homogeneity or only weak structure had been recorded until now, when analysed with mtDNA across a meso-scale geographic area [20, 21].…”

Section: Discussionmentioning

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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Phylogeographic patterns of decapod crustaceans at the Atlantic–Mediterranean transition

Cited by 61 publications

References 60 publications

A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers

A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers

The smaller vesicomyid bivalves in the genus Isorropodon (Bivalvia, Vesicomyidae, Pliocardiinae) also harbour chemoautotrophic symbionts

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

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