Mitochondrial DNA reveals hidden diversity for tardigrades from across the Antarctic realm

Velasco Castrillón, Alejandro; McInnes, Sandra J.; Schultz, Mark; Arróniz Crespo, María; D'Haese, Cyrille A.; Gibson, John A. E.; Adams, Byron J.; Page, Timothy J.; Austin, Andrew D.; Cooper, Steven J. B. y Stevens, Mark I. (2015). Mitochondrial DNA reveals hidden diversity for tardigrades from across the Antarctic realm. "Invertebr Syst", v. 29 (n. 6); pp. 578-590. ISSN 1445-5226. https://doi.org/10.1071/IS14019.

Descripción

Título: Mitochondrial DNA reveals hidden diversity for tardigrades from across the Antarctic realm
Autor/es:
  • Velasco Castrillón, Alejandro
  • McInnes, Sandra J.
  • Schultz, Mark
  • Arróniz Crespo, María
  • D'Haese, Cyrille A.
  • Gibson, John A. E.
  • Adams, Byron J.
  • Page, Timothy J.
  • Austin, Andrew D.
  • Cooper, Steven J. B.
  • Stevens, Mark I.
Tipo de Documento: Artículo
Título de Revista/Publicación: Invertebr Syst
Fecha: 2015
Volumen: 29
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Química y Tecnología de Alimentos
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (8MB) | Vista Previa

Resumen

Antarctica contains some of the most challenging environmental conditions on the planet due to freezing temperatures, prolonged winters and lack of liquid water. Whereas 99.7% of Antarctica is permanently covered by ice and snow, some coastal areas and mountain ridges have remained ice-free and are able to sustain populations of microinvertebrates. Tardigrades are one of the more dominant groups of microfauna in soil and limno-terrestrial habitats, but little is known of their diversity and distribution across Antarctica. Here, we examine tardigrades sampled from across an extensive region of continental Antarctica, and analyse and compare their partial mitochondrial cytochrome c oxidase subunit 1 (COI) gene sequences with those from the Antarctic Peninsula, maritime and sub-Antarctica, Tierra del Fuego and other worldwide locations in order to recognise operational taxonomic units (OTUs). From 439 new tardigrade COI sequences, we identified 98 unique haplotypes (85 from Antarctica) belonging to Acutuncus, Diphascon, Echiniscus, Macrobiotus, Milnesium and unidentified Parachela. Operational taxonomic units were delimited by Poisson tree processes and general mixed Yule coalescent methods, resulting in 58 and 55 putative species, respectively. Most tardigrades appear to be locally endemic (i.e. restricted to a single geographic region), but some (e.g. Acutuncus antarcticus (Richters, 1904)) are widespread across continental Antarctica. Our molecular results reveal: (i) greater diversity than has previously been appreciated with distinct OTUs that potentially represent undescribed species, and (ii) a lack of connectivity between most OTUs from continental Antarctica and those from other Antarctic geographical zones.

Más información

ID de Registro: 40973
Identificador DC: http://oa.upm.es/40973/
Identificador OAI: oai:oa.upm.es:40973
Identificador DOI: 10.1071/IS14019
URL Oficial: http://www.publish.csiro.au/nid/120/paper/IS14019.htm
Depositado por: Memoria Investigacion
Depositado el: 16 Jun 2016 17:29
Ultima Modificación: 16 Jun 2016 17:29
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM