Phylogeography of the littoral prawn species Palaemon elegans (Crustacea: Caridea: Palaemonidae) across the Mediterranean Sea unveils disparate patterns of population genetic structure and demographic history in the two sympatric genetic types II and III

Deli, Temim; Pfaller, Monika; Schubart, Christoph D.

doi:10.1007/s12526-017-0711-6

Cited by 11 publications

(19 citation statements)

References 113 publications

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“…elegans type III and proposed to belong to a putative cryptic species. This genetic pattern was supported in later phylogeographic studies in the Mediterranean Sea also using mtDNA data [ 21 , 22 ]. Very recently, we have developed polymorphic microsatellite loci for this species [ 23 ] and accomplished a large analysis along its native distribution range that corroborated two clearly genetically distinct groups within P .…”

Section: Introductionsupporting

confidence: 58%

Mitogenome phylogenetics in the genus Palaemon (Crustacea: Decapoda) sheds light on species crypticism in the rockpool shrimp P. elegans

et al. 2020

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The genus Palaemon comprises worldwide marine and freshwater shrimps and prawns, and some of them are ecologically or commercially important species. Palaemon is not currently a monophyletic group, so phylogenetics and systematics are constantly changing. Species crypticism has been pointed out in several Palaemon species, being the clearest evidence in the European rockpool shrimp P. elegans. Here we sequenced and described seven European Palaemon mitochondrial genomes. The mitochondrial protein-coding genes were used, along with those of three other Palaemon species, to perform mitogenome phylogenetic analyses to clarify the evolutionary relationships within the genus, and particularly to shed light on the cryptic species found within P. elegans. The Messinian Salinity Crisis (5.3-5.9 Ma, late Miocene) was proposed to be the origin of this cryptic species and it was used as aged constraint for calibration analysis. We provide the largest and the first time-calibrated mitogenome phylogeny of the genus Palaemon and mitogenome substitution rate was estimated (1.59% per million years) in Decapoda for the first time. Our results highlighted the need for future systematics changes in Palaemon and crypticism in P. elegans was confirmed. Mitochondrial genome and cox1 (1.41%) substitution rate estimates matched those published elsewhere, arguing that the Messinian Salinity Crisis was a plausible event driving the split between P. elegans and its cryptic species. Molecular dating suggested that Pleistocene glaciations were likely involved in the differentiation between the Atlantic and Mediterranean populations of P. elegans. On the contrary, the divergence between the Atlantic and Mediterranean populations of the common littoral shrimp P. serratus was greater and dated to be much older (4.5-12.3 Ma, Plio-Miocene), so we considered that they could represent two separated species. Therefore, species crypticism in the genus Palaemon seems to be a common phenomenon.

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Section: Introductionsupporting

confidence: 58%

Mitogenome phylogenetics in the genus Palaemon (Crustacea: Decapoda) sheds light on species crypticism in the rockpool shrimp P. elegans

et al. 2020

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“…As for P. elegans type III, it was only recorded from Mediterranean localities and showed high nucleotide divergence from the other two types 8 . This genetic pattern was confirmed in later phylogeographic studies in the Mediterranean Sea also using mtDNA markers 12,13 . Reuschel et al 8 proposed that type III individuals could belong to a putative cryptic species existing within P. elegans.…”

supporting

confidence: 57%

“…Since all shrimps from Granada, Almería, Collioure, Livorno and Mallorca were captured simultaneously in the same rockpools and unambiguously morphologically identified as P. elegans afterwards, we concluded that the explanation for the divergent individuals is the presence of a cryptic and sympatric species existing within P. elegans. Previous studies using mtDNA markers reported that some individuals from the Mediterranean Sea exhibited divergent haplotypes respecting the rest of the sampled collection, being those named P. elegans type III and considered as a cryptic species 8,12,13 . In fact, the individuals assigned with our microsatellite set to a cryptic species were confirmed to correspond with those P. elegans type III by their mtDNA COI sequences.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity and population structure of the rockpool shrimp Palaemon elegans based on microsatellites: evidence for a cryptic species and differentiation across the Atlantic–Mediterranean transition

González-Castellano

González-López

González‐Tizón

et al. 2020

Sci Rep

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the rockpool shrimp Palaemon elegans is an ecologically important crustacean species within the european coastline fauna. in the present study, genetic diversity and population structure and connectivity were assessed by examining 21 polymorphic microsatellite loci at 13 sampling sites located along the natural distribution range. All localities showed similar levels of genetic variability. Significant deficits of heterozygosity were recorded, most likely due to the presence of null alleles. Genetic structure analyses revealed two clearly genetically distinct groups within P. elegans but without following any geographical or oceanographic basis. thus, our results provided nuclear evidence for the existence of a Mediterranean cryptic species within P. elegans, highlighting the need to revise its taxonomic status. Regarding P. elegans sensu stricto, population structuring was reported across the Atlantic-Mediterranean transition area, where the Almería-orán front restricts the gene flow between the Atlantic and the Mediterranean population. Moreover, while population connectivity was suggested between all Mediterranean localities, some substructure was found within the Atlantic group. Canary Islands exhibited a weak but significant genetic differentiation from all Atlantic mainland localities, consistent with the isolation-by-distance pattern detected throughout the Atlantic population. Overall, all these findings provided new insights into the population biology of P. elegans complex. The rockpool shrimp Palaemon elegans Rathke, 1837 is a crustacean decapod common in tidal rockpools, Zostera, Posidonia and Cymodocea sea grasses meadows and it also can be found in hypersaline lagoons and in slightly brackish water close to river mouths 1. This species is characterized by its capability to adapt to highly variable environments, as it can cope with a wide range of salinities, temperatures and oxygen conditions 2,3. Regarding to the native geographical distribution of P. elegans, it ranges from the eastern Atlantic Ocean (from Scotland and Norway to Mauritania, including the Azores, Madeira and Canary Islands) to the entire Mediterranean Sea and the Black Sea 4. Unintentional introductions resulted in this shrimp inhabiting the Caspian Sea and the Aral open

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“…In contrast, range expansion primed by a rising sea level, following environmental warming during interglacials, could result in rapid population growth and consequent genetic homogeneity as a result of secondary contact between previously isolated evolutionary lineages [11]. The impact of these historical factors, intensified by the effects of contemporary environmental and oceanographic gradients, could have been potentially involved in shaping present day genetic variation and population structure in marine species [8, 15].…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, the severe palaeogeographic and palaeoclimatic shifts that this region has undergone throughout its history, resulting in the onset of specific oceanographic features across its coastline, have set the stage for the impact of evolutionary and demographic processes on forging genetic variation of marine species [14, 17]. Recent phylogeographic investigations have provided evidence for the occurrence of pronounced genetic boundaries between the East Atlantic and the western Mediterranean, and between the Western and Eastern Mediterranean basins [2, 8, 15, 18–22]. Further pronounced genetic breaks have also been documented in the eastern Mediterranean, notably between the Adriatic-Ionian seas and the Aegean-Marmara-Black seas [1, 8, 22–26].…”

Section: Introductionmentioning

confidence: 99%

Phylogeographic and evolutionary history analyses of the warty crab Eriphia verrucosa (Decapoda, Brachyura, Eriphiidae) unveil genetic imprints of a late Pleistocene vicariant event across the Gibraltar Strait, erased by postglacial expansion and admixture among refugial lineages

2019

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Background The Pleistocene cyclic sea-level fluctuations are thought to have markedly affected the distribution and genetic architecture of Atlanto-Mediterranean biota. Despite the acknowledged key role played by these historical events in shaping population genetic structure of marine species, little is still known about the processes involved in shaping the spatial distribution of genetic variation within intertidal species. We intended in this study to reconstruct the phylogeography of a common and widely distributed coastal species across the East Atlantic and Mediterranean Sea (the warty crab Eriphia verrucosa ), aiming to unravel potential microevolutionary processes likely involved in shaping its genetic polymorphism. For this purpose, a total of 155 specimens of E. verrucosa from 35 locations across the entire distribution range were analyzed by comparing a 453 basepairs region of the mitochondrial gene cytochrome oxidase subunit 1 (Cox1). Results Our results unveiled the prevalence of high genetic connectivity among East Atlantic and Mediterranean populations, with noticeable genetic distinctiveness of the peripheral population from the Azores. Spatio-temporal patterns of genetic diversification and demographic history allowed retrieving genetic imprints of late Pleistocene vicariant event across the Gibraltar Strait followed by subsequent postglacial expansion events for both the East Atlantic and Mediterranean regions. Integrative evidences from the outcomes of comparison of regional genetic diversification, as well as evolutionary and biogeographic histories reconstructions, support the existence of potential glacial refugia for E. verrucosa in the East Atlantic and western Mediterranean. Our results also revealed low levels of genetic variability along with recent demographic and spatial expansion events for eastern Mediterranean warty crabs, suggesting that the eastern areas within the distribution range of the species might have been recently colonized from putative glacial refugia. Conclusions These findings provide new insights into the phylogeography and evolutionary history of a common but poorly studied Atlanto-Mediterranean decapod species. Specifically, they contribute to the understanding of the impact of historical processes on shaping contemporary population genetic structure and diversity in intertidal marine species. Electronic supplementary material The online version of this article (10.1186/s12862-019-1423-2) contains supplementary material, which is available to authorized users.

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Phylogeography of the littoral prawn species Palaemon elegans (Crustacea: Caridea: Palaemonidae) across the Mediterranean Sea unveils disparate patterns of population genetic structure and demographic history in the two sympatric genetic types II and III

Cited by 11 publications

References 113 publications

Mitogenome phylogenetics in the genus Palaemon (Crustacea: Decapoda) sheds light on species crypticism in the rockpool shrimp P. elegans

Mitogenome phylogenetics in the genus Palaemon (Crustacea: Decapoda) sheds light on species crypticism in the rockpool shrimp P. elegans

Genetic diversity and population structure of the rockpool shrimp Palaemon elegans based on microsatellites: evidence for a cryptic species and differentiation across the Atlantic–Mediterranean transition

Phylogeographic and evolutionary history analyses of the warty crab Eriphia verrucosa (Decapoda, Brachyura, Eriphiidae) unveil genetic imprints of a late Pleistocene vicariant event across the Gibraltar Strait, erased by postglacial expansion and admixture among refugial lineages

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