An integrated study of the biodiversity within the Pseudechiniscus suillus-facettalis group (Heterotardigrada: Echiniscidae): Echiniscidae)

Michele Cesari, Martina Montanari, Reinhardt M. Kristensen, Roberto Bertolani, Roberto Guidetti*, Lorena Rebecchi

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

36 Citationer (Scopus)
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Abstract

Pseudechiniscus is the second most species-rich genus in Heterotardigrada and in the family Echiniscidae. However, previous studies have pointed out polyphyly and heterogeneity in this taxon. The recent erection of the genus Acanthechiniscus was another step in making Pseudechiniscus monophyletic, but species identification is still problematic. The present investigation aims at clarifying biodiversity and taxonomy of Pseudechiniscus taxa, with a special focus on species pertaining to the so-called 'suillus-facettalis group', by using an integrated approach of morphological and molecular investigations. The analysis of sequences from specimens sampled in Europe and Asia confirms the monophyly of the genus Pseudechiniscus. Inside the genus, two main evolutionary lineages are recognizable: the P. novaezeelandiae lineage and the P. suillus-facettalis group lineage. Inside the P. suillusfacettalis group, COI molecular data points out a very high variability between sampled localities, but in some cases also among specimens sampled in the same locality (up to 33.3% p-distance). The integrated approach to the study of Pseudechiniscus allows confirmation of its monophyly and highlights the relationships in the taxon, pointing to its global distribution.

OriginalsprogEngelsk
TidsskriftZoological Journal of the Linnean Society
Vol/bind188
Udgave nummer3
Sider (fra-til)717-732
Antal sider16
ISSN0024-4082
DOI
StatusUdgivet - 2020
Begivenhed14th International Symposium on Tardigrada - Progress in Studies on Water Bears - Copenhagen, Danmark
Varighed: 30 jul. 20183 aug. 2018

Konference

Konference14th International Symposium on Tardigrada - Progress in Studies on Water Bears
Land/OmrådeDanmark
ByCopenhagen
Periode30/07/201803/08/2018

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