An integrated study of the biodiversity within the Pseudechiniscus suillus-facettalis group (Heterotardigrada: Echiniscidae): Echiniscidae)
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An integrated study of the biodiversity within the Pseudechiniscus suillus-facettalis group (Heterotardigrada: Echiniscidae) : Echiniscidae). / Cesari, Michele; Montanari, Martina; Kristensen, Reinhardt M.; Bertolani, Roberto; Guidetti, Roberto; Rebecchi, Lorena.
I: Zoological Journal of the Linnean Society, Bind 188, Nr. 3, 2020, s. 717-732.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - An integrated study of the biodiversity within the Pseudechiniscus suillus-facettalis group (Heterotardigrada: Echiniscidae)
T2 - 14th International Symposium on Tardigrada - Progress in Studies on Water Bears
AU - Cesari, Michele
AU - Montanari, Martina
AU - Kristensen, Reinhardt M.
AU - Bertolani, Roberto
AU - Guidetti, Roberto
AU - Rebecchi, Lorena
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - 18S
KW - 28S
KW - cytochrome c oxidase I
KW - Pseudechiniscus facettalis
KW - scanning electron microscope
KW - Pseudechiniscus suillus
KW - Tardigrada
KW - water bears
KW - MACROBIOTIDAE HUFELANDI GROUP
KW - TARDIGRADA EUTARDIGRADA
KW - SP-NOV
KW - INTERTIDAL TARDIGRADES
KW - MOLECULAR PHYLOGENY
KW - NOMINAL TAXON
KW - GEN. NOV
KW - DIVERSITY
KW - REDESCRIPTION
KW - ECHINISCOIDEA
U2 - 10.1093/zoolinnean/zlz045
DO - 10.1093/zoolinnean/zlz045
M3 - Journal article
VL - 188
SP - 717
EP - 732
JO - Zoological Journal of the Linnean Society
JF - Zoological Journal of the Linnean Society
SN - 0024-4082
IS - 3
Y2 - 30 July 2018 through 3 August 2018
ER -
ID: 246353688