01957nas a2200157 4500008004100000245012200041210006900163260001200232300001200244490000700256520139900263100002701662700002001689700001901709856007101728 2008 eng d00aMolecular phylogeny of land and freshwater planarians (Tricladida, Platyhelminthes): from freshwater to land and back0 aMolecular phylogeny of land and freshwater planarians Tricladida c05/2008 a555-5680 v473 a

The suborder Tricladida (phylum Platyhelminthes) comprises the well-known free-living flatworms, taxonomically grouped into three infraorders according to their ecology: Maricola (marine planarians), Paludicola (freshwater planarians), and Terricola (land planarians). Molecular analyses have demonstrated that the Paludicola are paraphyletic, the Terricola being the sister group of one of the three paludicolan families, the Dugesiidae. However, neither 18S rDNA nor COI based trees have been able to resolve the relationships among species of Terricola and Dugesiidae, particularly the monophyly of Terricola. Here, we present new molecular data including sequences of nuclear genes (18S rDNA, 28S rDNA) and a mitochondrial gene (COI) of a wider sample of dugesiid and terricolan species. The new sequences have been analyzed, together with those previously obtained, in independent and concatenated analyses using maximum likelihood and bayesian methods. The results show that, although some parts of the trees remain poorly resolved, they support a monophyletic origin for Terricola followed by a likely return of some species to freshwater habitats. Relationships within the monophyletic group of Dugesiidae are clearly resolved, and relationships among some terricolan subfamilies are also clearly established and point to the need for a thorough revision of Terricola taxonomy.

1 aÁlvarez-Presas, Marta1 aBaguñà, Jaume1 aRiutort, Marta uhttp://www.sciencedirect.com/science/article/pii/S105579030800039001942nas a2200157 4500008004100000245017800041210006900219300001200288490000700300520131100307100002701618700002201645700001701667700001901684856008101703 2011 eng d00aLand planarians (Platyhelminthes) as a model organism for fine-scale phylogeographic studies: understanding patterns of biodiversity in the Brazilian Atlantic Forest hotspot0 aLand planarians Platyhelminthes as a model organism for finescal a887-8960 v243 a

The Brazilian Atlantic Forest is one of the richest biodiversity hotspots of the world. Paleoclimatic models have predicted two large stability regions in its northern and central parts, whereas southern regions might have suffered strong instability during Pleistocene glaciations. Molecular phylogeographic and endemism studies show, nevertheless, contradictory results: although some results validate these predictions, other data suggest that paleoclimatic models fail to predict stable rainforest areas in the south. Most studies, however, have surveyed species with relatively high dispersal rates whereas taxa with lower dispersion capabilities should be better predictors of habitat stability. Here, we have used two land planarian species as model organisms to analyse the patterns and levels of nucleotide diversity on a locality within the Southern Atlantic Forest. We find that both species harbour high levels of genetic variability without exhibiting the molecular footprint of recent colonization or population expansions, suggesting a long-term stability scenario. The results reflect, therefore, that paleoclimatic models may fail to detect refugia in the Southern Atlantic Forest, and that model organisms with low dispersal capability can improve the resolution of these models.

1 aÁlvarez-Presas, Marta1 aCarbayo, Fernando1 aRozas, Julio1 aRiutort, Marta uhttp://onlinelibrary.wiley.com/doi/10.1111/j.1420-9101.2010.02220.x/abstract00657nas a2200157 4500008004100000245022800041210006900269300001200338490000700350100002700357700001500384700001900399700001400418700001500432856005200447 2012 eng d00aEvidence for the persistence of the land planarian species Microplana terrestris (Müller, 1774) (Platyhelminthes, Tricladida) in microrefugia during the Last Glacial Maximum in the northern section of the Iberian Peninsula0 aEvidence for the persistence of the land planarian species Micro a491-4990 v641 aÁlvarez-Presas, Marta1 aMateos, E.1 aVila-Farre, M.1 aSluys, R.1 aRiutort, M uhttps://continenticola.myspecies.info/node/120402235nas a2200169 4500008004100000245011800041210006900159300000900228490000700237520166600244100001901910700002701929700002101956700001801977700001601995856005402011 2012 eng d00aEvolutionary history of the Tricladida and the Platyhelminthes: an up-to-date phylogenetic and systematic account0 aEvolutionary history of the Tricladida and the Platyhelminthes a a5-170 v563 a

Within the free-living platyhelminths, the triclads, or planarians, are the best-known group, largely as a result of long-standing and intensive research on regeneration, pattern formation and Hox gene expression. However, the group’s evolutionary history has been long debated, with controversies ranging from their phyletic structure and position within the Metazoa to the relationships among species within the Tricladida. Over the the last decade, with the advent of molecular phylogenies, some of these issues have begun to be resolved. Here, we present an up-to-date summary of the main phylogenetic changes and novelties with some comments on their evolutionary implications. The phylum has been split into two groups, and the position of the main group (the Rhabdithophora and the Catenulida), close to the Annelida and the Mollusca within the Lophotrochozoa, is now clear. Their internal relationships, although not totally resolved, have been clarified. Tricladida systematics has also experienced a revolution since the implementation of molecular data. The terrestrial planarians have been demonstrated to have emerged from one of the freshwater families, giving a different view of their evolution and greatly altering their classification. The use of molecular data is also facilitating the identification of Tricladida species by DNA barcoding, allowing better knowledge of their distribution and genetic diversity. Finally, molecular phylogenetic and phylogeographical analyses, taking advantage of recent data, are beginning to give a clear picture of the recent history of the Dugesia and Schmidtea species in the Mediterranean.

1 aRiutort, Marta1 aÁlvarez-Presas, Marta1 aLázaro, Eva, M.1 aSolà, Eduard1 aPaps, Jordi uhttp://www.ijdb.ehu.es/web/paper.php?doi=113441mr00625nas a2200169 4500008004100000245012200041210006900163300001200232490000700244100002200251700002700273700002700300700002900327700002400356700002300380856005200403 2013 eng d00aMolecular phylogeny of Geoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions0 aMolecular phylogeny of Geoplaninae Platyhelminthes challenges cu a508-5280 v421 aCarbayo, Fernando1 aÁlvarez-Presas, Marta1 aOlivares, Cláudia, T.1 aMarques, Fernando, P. L.1 aFroehlich, Eudóxia1 aRiutort, Marta, M. uhttps://continenticola.myspecies.info/node/118900537nas a2200157 4500008004100000245009400041210006900135260001200204490000600216100002700222700002000249700001900269700002000288700001900308856005200327 2014 eng d00aDiversity of introduced terrestrial flatworms in the Iberian Peninsula: a cautionary tale0 aDiversity of introduced terrestrial flatworms in the Iberian Pen c06/20140 v21 aÁlvarez-Presas, Marta1 aMateos, Eduardo1 aTudó, Àngels1 aJones, Hugh, D.1 aRiutort, Marta uhttps://continenticola.myspecies.info/node/117200585nas a2200145 4500008004100000245017200041210006900213300000900282100002700291700002400318700001600342700001400358700001500372856005200387 2014 eng d00aInsights into the origin and distribution of biodiversity in the Brazilian Atlantic forest hot spot: a statistical phylogeographic study using a low-dispersal organism0 aInsights into the origin and distribution of biodiversity in the a1-101 aÁlvarez-Presas, Marta1 aSánchez-Gracia, A.1 aCarbayo, F.1 aRozas, J.1 aRiutort, M uhttps://continenticola.myspecies.info/node/1175