4.5 Article

Morphological and molecular phylogeny of Epiperipatus (Onychophora: Peripatidae): a combined approach

期刊

ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 192, 期 3, 页码 763-793

出版社

OXFORD UNIV PRESS
DOI: 10.1093/zoolinnean/zlaa100

关键词

biogeography; caraibes onychophorans; conserved morphology; Epiperipatus; morphology; Neopatida; New World; Peripatidae; South America; systematics

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资金

  1. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
  3. National Science Foundation (NSF) [DOB1343578]
  4. FAPESP [2011/20211-0, 2012/02969-6, 2014/20557-2]
  5. Labex CEBA [ANR-10-LABX-25-01]
  6. Sao Paulo Research Foundation (FAPESP) [2011/20211-0, 2012/02969-6, 2014/20557-2]
  7. NSF [DEB-1144417]
  8. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [12/02969-6] Funding Source: FAPESP

向作者/读者索取更多资源

Onychophora, or velvet worms, are important for understanding the evolution of Ecdysozoans. The Peripatidae family presents taxonomic issues, especially in the Neotropical region. Research on Neopatida has shown that relying solely on morphological characters is insufficient to resolve phylogenetic relationships at higher taxa, while analyses of molecular or combined data indicate that Neotropical species can be divided into two clades.
Onychophora, or velvet worms, are a key group for understanding ecdysozoan evolution. It comprises two families: Peripatopsidae, largely of Austral distribution, and Peripatidae, which is circumtropical. The interrelationships between the members of Peripatidae present many taxonomic issues exacerbated in the radiation of the Neotropical species or Neopatida. To understand the phylogeny of Neopatida, and to test the information of such morphological characters, we gathered novel molecular and morphological datasets focusing on Neotropical specimens. Our data were analysed using a combination of parsimony and maximum likelihood for the individual and combined molecular and morphological datasets. An analysis of morphology alone was inconclusive, supporting the notion that morphological characters used in peripatid taxonomy have little power to resolve phylogenetic relationships among higher taxa in Neopatida. However, the analyses of molecular or combined data show a split of the Neotropical species into two clades, which we use to reassign genera. Epiperipatus, as currently understood, is non-monophyletic, because it includes species of monotypic genera. To avoid paraphyly of Epiperipatus, the following new combinations are proposed: Epiperipatus bouvieri (Fuhrmann, 1913), Epiperipatus hitoyensis (Oliveira et al., 2012a), Epiperipatus solorzanoi (Morera-Brenes & Monge-Najera, 2010) and Epiperipatus sucuriuensis (Oliveira et al., 2015).

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