Evolution of squat lobsters (Crustacea, Galatheoidea): mitogenomic data suggest an early divergent Porcellanidae

Palero, Ferran; Rodríguez‐Flores, Paula C.; Cabezas, Patricia; Machordom, Annie; Macpherson, Enrique; Corbari, Laure

doi:10.1007/s10750-019-3898-7

Cited by 6 publications

(1 citation statement)

References 43 publications

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“…These hermit crabs are nearly ubiquitous in coastal marine environments from the intertidal to abyssal depths. A large body of morphological and genetic research on paguroid systematics has focused on the relationships between controversial, large-scale groupings (family level and above), as well as the phenomenon of carcinization (MacDonald et al 1957;McLaughlin 1983;Forest 1987;Cunningham et al 1992;Scholtz & Richter 1995;Morrison et al 2002;Dixon et al 2003;McLaughlin et al 2007;Reimann et al 2011;Tsang et al 2011;Bracken-Grissom et al 2013;Keiler et al 2017;Palero et al 2019). Emerging evidence from molecular phylogenetics, CO1 barcoding studies, and phylogenomic analyses demonstrates that evolutionary relationships within Anomura and among paguroid groups are not always clear cut, suggesting that the taxonomic scope of some families and many of the genera they encompass will require revisions in order to reconcile current classifications with phylogenetic relationships (Landschoff & Gouws 2018;Noever & Glenner 2018;Tan et al 2018;Wolfe et al 2019).…”

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confidence: 99%

Molecular phylogenetic analysis of the Paguristes tortugae Schmitt, 1933 complex and selected other Paguroidea (Crustacea: Decapoda: Anomura)

Craig

Felder

2021

Zootaxa

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Morphological characters, as presently applied to describe members of the Paguristes tortugae Schmitt, 1933 species complex, appear to be of limited value in inferring phylogenetic relationships within the genus, and may have similarly misinformed understanding of relationships between members of this complex and those presently assigned to the related genera Areopaguristes Rahayu & McLaughlin, 2010 and Pseudopaguristes McLaughlin, 2002. Previously undocumented observations of similarities and differences in color patterns among populations additionally suggest genetic divergences within some species, or alternatively seem to support phylogenetic groupings of some species. In the present study, a Maximum Likelihood (ML) phylogenetic analysis was undertaken based on the H3, 12S mtDNA, and 16S mtDNA sequences of 148 individuals, primarily representatives of paguroid species from the western Atlantic. This molecular analysis supported a polyphyletic Diogenidae Ortmann, 1892, although incomplete taxonomic sampling among the genera of Diogenidae limits the utility of this finding for resolving family level relationships. Several hypotheses regarding the evolutionary relationships among hermit crab genera were refuted by the Kishino-Hasegawa (KH). Shimodaira-Hasegawa (SH) and Approximately Unbiased (AU) tree topology tests, among them the hypothesis that Areopaguristes is monophyletic. A lack of support for the monophyly of Areopaguristes calls into question the phylogenetic validity of gill number for the differentiation of Paguristes, Areopaguristes, and Pseudopaguristes. The study was inconclusive with regard to the relationships among these three genera, but previously unknown diversity within both Paguristes and Areopaguristes was demonstrated. Existence of an undescribed species confounded under the name Paguristes tortugae Schmitt, 1933 was supported by genetics, morphology, and coloration. A second undescribed species with remarkable similarity to Areopaguristes hummi Wass, 1955 was discovered based on genetics and coloration.

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