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<datestamp>2018-01-13</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>A Large and Consistent Phylogenomic Dataset Supports Sponges as the Sister Group to All Other Animals</title>
<creator>Simion, Paul</creator>
<creator>Philippe, Herve</creator>
<creator>Baurain, Denis</creator>
<creator>Jager, Muriel</creator>
<creator>Richter, Daniel J.</creator>
<creator>Di Franco, Arnaud</creator>
<creator>Roure, Beatrice</creator>
<creator>Satoh, Nori</creator>
<creator>Queinnec, Eric</creator>
<creator>Ereskovsky, Alexander</creator>
<creator>Lapebie, Pascal</creator>
<creator>Corre, Erwan</creator>
<creator>Delsuc, Frederic</creator>
<creator>King, Nicole</creator>
<creator>Worheide, Gert</creator>
<creator>Manuel, Michael</creator>
<contributor>Institut des Sciences de l'Evolution [Montpellier] (ISEM) ; Université de Montpellier (UM) - Institut de recherche pour le développement [IRD] : UR226 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>UMR5321 Station d'écologie théorique et expérimentale (SETE) ; Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor> Centre Robert Cedergren, Depatement Biochimie ; Université de Montréal</contributor>
<contributor>InBioS PhytoSYST Eukaryot Phylogen ; Université de Liège</contributor>
<contributor>Evolution Paris Seine ; Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Université Pierre et Marie Curie - Paris 6 (UPMC)</contributor>
<contributor>Station biologique de Roscoff [Roscoff] (SBR) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>University of California [Berkeley]</contributor>
<contributor>Okinawa Institute of Science and Technology ; Okinawa Institute of Science and Technology</contributor>
<contributor>Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) ; Université d'Avignon et des Pays de Vaucluse (UAPV) - Aix Marseille Université (AMU) - Institut national des sciences de l'Univers (INSU - CNRS) - INEE - INSB - Institut de recherche pour le développement [IRD] : UMR237 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Laboratoire de Biologie du Développement de Villefranche sur mer (LBDV) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Howard Hughes Medical Institute [Berkeley] ; University of California [Berkeley]</contributor>
<contributor>Department of Molecular and Cell Biology [Berkeley] ; University of California [Berkeley]</contributor>
<contributor>Institute for Physiological Chemistry and Pathobiochemistry ; Institute for Physiological Chemistry and Pathobiochemistry</contributor>
<description>International audience</description>
<source>ISSN: 0960-9822</source>
<source>EISSN: 1879-0445</source>
<source>Current Biology - CB</source>
<publisher>Elsevier</publisher>
<identifier>hal-01681528</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01681528</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01681528</source>
<source>Current Biology - CB, Elsevier, 2017, 27 (7), pp.958-967. 〈10.1016/j.cub.2017.02.031〉</source>
<identifier>DOI : 10.1016/j.cub.2017.02.031</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cub.2017.02.031</relation>
<language>en</language>
<subject>[SDE] Environmental Sciences</subject>
<subject>[SDU.STU] Sciences of the Universe [physics]/Earth Sciences</subject>
<subject>[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces, environment</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Resolving the early diversification of animal lineages has proven difficult, even using genome-scale datasets. Several phylogenomic studies have supported the classical scenario in which sponges (Porifera) are the sister group to all other animals (''Porifera-sister''3 hypothesis), consistent with a single origin of the gut, nerve cells, and muscle cells in the stem lineage of eumetazoans (bilaterians + ctenophores + cnidarians). In contrast, several other studies have recovered an alternative topology in which ctenophores are the sister group to all other animals (including sponges). The ``Ctenophora-sister'' hypothesis implies that eumetazoan-specific traits, such as neurons and muscle cells, either evolved once along the metazoan stem lineage and were then lost in sponges and placozoans or evolved at least twice independently in Ctenophora and in Cnidaria + Bilateria. Here, we report on our reconstruction of deep metazoan relationships using a 1,719-gene dataset with dense taxonomic sampling of non-bilaterian animals that was assembled using a semi-automated procedure, designed to reduce known error sources. Our dataset outperforms previous metazoan gene superalignments in terms of data quality and quantity. Analyses with a best-fitting site-heterogeneous evolutionary model provide strong statistical support for placing sponges as the sister-group to all other metazoans, with ctenophores emerging as the second-earliest branching animal lineage. Only those methodological settings that exacerbated long-branch attraction artifacts yielded Ctenophora-sister. These results show that methodological issues must be carefully addressed to tackle difficult phylogenetic questions and pave the road to a better understanding of how fundamental features of animal body plans have emerged.</description>
<date>2017</date>
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