Reflections on the genus<i>Amaga</i>Ogren and Kawakatsu 1990, and description of a new genus of land planarian (Platyhelminthes: Tricladida: Geoplanidae)

Grau, José Horacio; Sluys, Ronald; Froehlich, Eudóxia Maria; Carbayo, Fernando

doi:10.1080/00222933.2012.691996

Cited by 13 publications

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“…1). In that study, Geoplaninae was only represented by three species of Geoplana and one species of Notogynaphallia, although it currently comprises 260 species within 18 recognized genera Carbayo 2010;Grau et al 2012). Hence, the monophyly of these genera has never been tested despite the expectation that some of them constitute non-monophyletic assemblages.…”

Section: Introductionmentioning

confidence: 95%

“…; Carbayo ; Grau et al . ). Hence, the monophyly of these genera has never been tested despite the expectation that some of them constitute non‐monophyletic assemblages.…”

Section: Introductionmentioning

confidence: 97%

“…Amaga Ogren & Kawakatsu, ; Geoplana Stimpson, ; Gigantea Ogren & Kawakatsu, ; Notogynaphallia Ogren & Kawakatsu, ; and Pasipha Ogren & Kawakatsu ; see Leal‐Zanchet & Froehlich (); Carbayo (, , ); Grau et al . ()]. It is also true that some genera are diagnosed by exclusive, putative synapomorphic characters (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…This assumption relies over genera that seem to be poorly circumscribed by a combination of features also found in other genera of the subfamily [e.g. Amaga Geoplana Stimpson, 1857;Gigantea Ogren & Kawakatsu, 1990;Notogynaphallia Ogren & Kawakatsu, 1990;and Pasipha Ogren & Kawakatsu 1990;see Leal-Zanchet & Froehlich (2006); Carbayo (2006Carbayo ( , 2008Carbayo ( , 2010; Grau et al (2012)]. It is also true that some genera are diagnosed by exclusive, putative synapomorphic characters (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Molecular phylogeny ofGeoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

et al. 2013

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Despite likely being the most diverse group within the Tricladida, the systematics of land planarians (Geoplanidae) has received minor attention. The most species‐rich ingroup, the subfamily Geoplaninae, is restricted to the Neotropics. The systematics of Geoplaninae remains uncertain. Unique features supporting the genera are scanty; moreover, parts of the known species have been poorly described, making comparative studies difficult. Likewise the evolutionary relationships among land planarians remain insufficiently understood. In the present study, a phylogenetic hypothesis for selected taxa of Geoplaninae based on the molecular data is presented and discussed in the light of morphological features. Our phylogenetic inference is based on the fragments of three nuclear regions (18S, 28S rDNA and EF‐1α) and a mitochondrial marker (cytochrome oxidase I) for which we considered three optimality criteria (parsimony, maximum likelihood and Bayesian inference). Although our data provide little support for most basal nodes, our phylogenetic trees show a number of well‐supported clades, unveiling morphologically homogeneous groups. According to these results, we propose to separate Geoplana into Barreirana (formerly considered a subgenus), Cratera gen. n., Imbira gen. n., Matuxia gen. n., Obama gen. n. and Paraba gen. n., emend the diagnoses of Barreirana, Geoplana, Notogynaphallia, Pasipha and Xerapoa and review the classification of the species within these genera. For Geoplana goetschi sensu Marcus, (1951), a new name is proposed.

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Section: Introductionmentioning

confidence: 95%

“…; Carbayo ; Grau et al . ). Hence, the monophyly of these genera has never been tested despite the expectation that some of them constitute non‐monophyletic assemblages.…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Molecular phylogeny ofGeoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

et al. 2013

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“…Even its taxonomy is in a state of flux; the successive morphological studies have continued to add to the number of genera of the subfamily through splittings and redefinitions, from the original six proposed by Von Graff (1912Graff ( -1917 [37] to 23 at present, since better methodologies, more detailed analyses and new samplings have been performed. The first molecular phylogenetic study in which Geoplaninae was represented [38], included only three species of Geoplana Schultze and Müller, 1857 and one species of Notogynaphallia Ogren and Kawakatsu, 1990, a very scarce representation for a group that currently comprises 260 species within the 23 recognized genera [2,39,40]. In order to obtain a robust phylogeny of the Geoplaninae subfamily, and confirm whether the molecular clades correspond with morphologically homogeneous groups, Carbayo et al [31] studied representatives of 13 genera belonging to the subfamily using three nuclear markers (18S type II and 28S ribosomal genes and the Elongation Factor 1α (EF) gene) and a mitochondrial one (Cox1).…”

Section: Classification and Taxonomy: The Case Of The Subfamily Geoplmentioning

confidence: 99%

Planarian (Platyhelminthes, Tricladida) Diversity and Molecular Markers: A New View of an Old Group

Álvarez‐Presas

Riutort

2014

Diversity

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Planarians are a group of free-living platyhelminths (triclads) best-known largely due to long-standing regeneration and pattern formation research. However, the group's diversity and evolutionary history has been mostly overlooked. A few taxonomists have focused on certain groups, resulting in the description of many species and the establishment of higher-level groups within the Tricladida. However, the scarcity of morphological features precludes inference of phylogenetic relationships among these taxa. The incorporation of molecular markers to study their diversity and phylogenetic relationships has facilitated disentangling many conundrums related to planarians and even allowed their use as phylogeographic model organisms. Here, we present some case examples ranging from delimiting species in an integrative style, and barcoding them, to analysing their evolutionary history on a lower scale to infer processes affecting biodiversity origin, or on a higher scale to understand the genus level or even higher relationships. In many cases, these studies have allowed proposing better classifications and resulted in taxonomical changes. We also explain shortcomings resulting in a lack of resolution or power to apply the most up-to-date data analyses. Next-generation sequencing methodologies may help improve this situation and accelerate their use as model organisms.

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Planarian Diversity and Phylogeny

Sluys

Riutort

2018

Methods in Molecular Biology

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Hundreds of planarian species exist worldwide, representing a rich phenotypic diversity. This chapter presents an overview of the morphology and anatomy of various taxonomic groups of planarian flatworms, focusing on features enabling recognition and identification of the animals. The most recent view on the phylogenetic relationships of the planarians is presented, together with geographic distribution patterns of major groups of triclads. The chapter concludes with a brief methodological section outlining species identification on basis of anatomical features. In conjunction with the established laboratory model species, the phenotypic diversity of planarians provides rich opportunities for comparative studies, which this chapter aims to inspire.

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Reflections on the genusAmagaOgren and Kawakatsu 1990, and description of a new genus of land planarian (Platyhelminthes: Tricladida: Geoplanidae)

Cited by 13 publications

References 1 publication

Molecular phylogeny ofGeoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

Molecular phylogeny ofGeoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

Planarian (Platyhelminthes, Tricladida) Diversity and Molecular Markers: A New View of an Old Group

Planarian Diversity and Phylogeny

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