Much of what is known about the phylogenetic relationships of the neglected phylum Tardigrada comes from molecular data, rather than from morphology-based phylogenetic studies. Several molecular phylogenies have been proposed, but morphological and total evidence phylogenetic approaches are scarce. We performed the first morphological phylogeny (based on maximum parsimony and Bayesian inference) including all genera from the class Eutardigrada. Furthermore, we carried out a total evidence approach adding molecular information available in public databases. We compared the morphological and total evidence phylogenies with current molecular hypotheses and Eutardigrada classifications, which our results partially support. These classifications were supported only when homoplastic characters (related to the buccopharyngeal apparatus) were excluded. The importance of morphological phylogenies is discussed as well as their utility for questioning current phylogenetic hypotheses and classifications based solely on molecular information. Lastly, we propose evolutionary hypotheses about eutardigrade phylogenetic relationships that should be tested based on our morphological results.

High level of phenotypic homoplasy amongst eutardigrades (Tardigrada) based on morphological and total evidence phylogenetic analyses / N., Guil; A., Machordom; Guidetti, Roberto. - In: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY. - ISSN 0024-4082. - STAMPA. - 169:1(2013), pp. 1-26. [10.1111/zoj.12046]

High level of phenotypic homoplasy amongst eutardigrades (Tardigrada) based on morphological and total evidence phylogenetic analyses

GUIDETTI, Roberto
2013

Abstract

Much of what is known about the phylogenetic relationships of the neglected phylum Tardigrada comes from molecular data, rather than from morphology-based phylogenetic studies. Several molecular phylogenies have been proposed, but morphological and total evidence phylogenetic approaches are scarce. We performed the first morphological phylogeny (based on maximum parsimony and Bayesian inference) including all genera from the class Eutardigrada. Furthermore, we carried out a total evidence approach adding molecular information available in public databases. We compared the morphological and total evidence phylogenies with current molecular hypotheses and Eutardigrada classifications, which our results partially support. These classifications were supported only when homoplastic characters (related to the buccopharyngeal apparatus) were excluded. The importance of morphological phylogenies is discussed as well as their utility for questioning current phylogenetic hypotheses and classifications based solely on molecular information. Lastly, we propose evolutionary hypotheses about eutardigrade phylogenetic relationships that should be tested based on our morphological results.
2013
169
1
1
26
High level of phenotypic homoplasy amongst eutardigrades (Tardigrada) based on morphological and total evidence phylogenetic analyses / N., Guil; A., Machordom; Guidetti, Roberto. - In: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY. - ISSN 0024-4082. - STAMPA. - 169:1(2013), pp. 1-26. [10.1111/zoj.12046]
N., Guil; A., Machordom; Guidetti, Roberto
File in questo prodotto:
File Dimensione Formato  
Guil et al 2013 phylogeny.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 784.04 kB
Formato Adobe PDF
784.04 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/969701
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 22
social impact