Molecular phylogeny of the genera Palaemon and Palaemonetes (Decapoda, Caridea, Palaemonidae) from a European perspective

Martı́nez-Rodrı́guez, Gonzalo; Schubart, Christoph D.; Drake, Pilar; Rodrı́guez, Antonio; Cuesta, José A.

doi:10.1163/156854012x650197

Cited by 17 publications

(14 citation statements)

References 20 publications

(25 reference statements)

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“…As a result, here we provide the largest mitogenome phylogeny for the genus Palaemon to date, where all nodes were strongly supported. Although extensive worldwide phylogenetic analyses have been performed in Palaemon, they were always based on a few mitochondrial (cox1 and 16S rDNA) and/or nuclear (histone 3 and 18S rDNA) genes [7][8][9][10]. In this regard, our trees showed a general agreement with the last phylogenetic assessment of the genus [8], supporting the current non-monophyletic status of Palaemon since the South African species P. capensis was included in the lineage comprising the Macrobrachium species.…”

Section: Plos Onesupporting

confidence: 78%

“…Specifically in Palaemon, extensive worldwide phylogenetic analyses have been performed revealing the need for further systematic rearrangements. Two studies suggested to synonymise Palaemonetes, Exopalaemon and Coutierella with Palaemon since their paraphyly was demonstrated [9,10]. This new genus Palaemon, redefined by De Grave & Ashelby [2], mainly grouped species according to their biogeographical distribution.…”

Section: Introductionmentioning

confidence: 94%

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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: Plos Onesupporting

confidence: 78%

Section: Introductionmentioning

confidence: 94%

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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“…An introduced species, Palaemon macrodactylus, has also been reported in the Gulf of Cádiz, in the Guadiana, Guadalquivir, Guadalete, San Pedro and Salado estuaries (Cuesta et al 2004, González-Ortegón et al 2005, in Cascais, western Portugal (Santinho 2009) and in the Balearic Islands as larvae (Torres et al 2012). Finally, , Cuesta et al (2012) and Cartaxana (2015) found, by analysing the variation in mtDNA, that there is no reason to recognize Palaemon garciacidi (a species described by Zariquiey-Alvarez 1968) as a species distinct from P. longirostris. In addition, larvae of Ascidonia flavomaculata were captured in Portugal by Paula (1987).…”

Section: Taxonomic Groupsmentioning

confidence: 93%

Updating changes in the Iberian decapod crustacean fauna (excluding crabs) after 50 years

et al. 2019

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An annotated checklist of the marine decapod crustaceans (excluding crabs) of the Iberian Peninsula has been compiled 50 years after the publication of “Crustáceos decápodos ibéricos” by Zariquiey Álvarez (1968). A total of 293 species belonging to 136 genera and 48 families has been recorded. This information increases by 116 species the total number reported by Zariquiey Álvarez in his posthumous work. The families with the greatest species richness are the Paguridae (28) and Palaemonidae (18). References by geographic sectors and for all species are given. The results show that 264 species are reported in the Atlantic sectors, while 178 have been found in the Mediterranean. The species richness and the differences between and within sectors are discussed; these are mainly due to the dimension of the areas, the depth ranges and the confluence of distinct water masses with a different origin and different physicochemical features. Consequently, the greatest richness of decapod species (excluding crabs) is found in the Gulf of Cádiz, with 194 species. The total number of decapods found in and around Iberian waters, including crabs, freshwater species and some new records not yet published, reaches 448.

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“…Hence, according to this theory, dispersed distributions of heterochromatin (interstitial or telomeric) have an older phylogenetic status. Iii) Recent molecular phylogenetic studies have suggested that genus Exopalaemon should be included within Palaemon [8, 33]. Among Exopalaemon , karyological analysis of E. modestus and E. carinicauda , have shown a diploid chromosome number of 90 [34, 35].…”

Section: Discussionmentioning

confidence: 99%

Comparative cytogenetic analysis of marine Palaemon species reveals a X1X1X2X2/X1X2Y sex chromosome system in Palaemon elegans

et al. 2017

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BackgroundThe maintenance of species and the promotion of speciation are closely related to chromosomal rearrangements throughout evolution. Decapoda represents the most species-rich order among crustaceans and, despite its ecological and economic importance, little is known about decapod karyology. We aim at cytogenetically characterizing two sympatric prawn species.ResultsAnalysis of mitotic metaphases and meiotic diakinesis of the common prawn Palaemon serratus and the rockpool prawn P. elegans, revealed considerable differences between their karyotypes including chromosome numbers and sex determination systems. The cytogenetic data for P. serratus showed a diploid number of 56 and the putative absence of heteromorphic sex chromosomes. However, the diploid chromosome number in P. elegans was 90 for females and 89 for males. The karyotype of the females consisted of the three largest acrocentric pairs and 42 submetacentric and metacentric pairs, while the karyotype of the males comprised a clearly identifiable large metacentric chromosome and two acrocentric pairs as well as the smaller 42 pairs. These results highlight the presence of the X1X1X2X2/X1X2Y multiple sex chromosome system in P. elegans, which constitute the only sexual system for Decapoda reported cytogenetically using modern techniques. The origin of this sex chromosome system is discussed. We hypothesize that the chromosome evolution within the genus could involve several fusion events giving rise to a reduction on the chromosome number in P. serratus. In both species, the major ribosomal genes were located in two chromosome pairs and hybridization signals of the telomeric sequences (TTAGGG)n were visualized at the telomeres of all chromosomes. C-banding revealed that, when present, constitutive heterochromatin had a predominantly telomeric distribution and no centromeric constitutive heterochromatin was observed.ConclusionsAlthough more comparative cytogenetic analyses are needed to clarify our hypotheses, the findings of this work indicate that the prawns of the genus Palaemon represent a promising model among Decapoda representatives to investigate the karyotype evolution and the patterns of sex chromosome differentiation.

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Molecular phylogeny of the genera Palaemon and Palaemonetes (Decapoda, Caridea, Palaemonidae) from a European perspective

Abstract: A molecular phylogenetic study by Murphy & Austin (2003)

Cited by 17 publications

References 20 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

Updating changes in the Iberian decapod crustacean fauna (excluding crabs) after 50 years

Comparative cytogenetic analysis of marine Palaemon species reveals a X1X1X2X2/X1X2Y sex chromosome system in Palaemon elegans

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