A genômica e a árvore da vida animal: conflitos e perspectivas futuras

quarta-feira, outubro 25, 2017

Genomics and the animal tree of life: conflicts and future prospects


Gonzalo Giribet

First published: 27 September 2016 Full publication history

This article is corrected by:

Errata: Corrigendum Volume 46, Issue 3, 388, Article first published online: 9 April 2017

Correction added on Feb 24, 2017, after first online publication: figure 1


Providing consistent resolution for the animal tree of life is a major goal of animal systematists and a desire of every zoologist. Towards this goal, many major nodes have been successfully resolved. However, some major controversies and poorly resolved deep nodes still remain. Here, I discuss some of these controversies (e.g. whether Ctenophora or Porifera is sister group to all other animals), clarify others (e.g. the position of Xenacoelomorpha) and identify major clades that still require resolution. But most importantly, a discussion about the possible conflict in some of these nodes and the relation to the nature of phylogenomic data are provided by exploring the meaning of total support in phylogenomic analyses, highlighting cases in which a data set can provide total support for contradictory nodes. Finally, our efforts should focus on generating genomic data for key candidate taxa, such as the large disparity of undescribed placozoans, which may in the end add to the current data quantity, the quality of data needed to resolve the base of the animal tree.

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