Integrative approach reveals new species of water bears (Pilatobius, Grevenius, and Acutuncus) from Arctic cryoconite holes, with the discovery of hidden lineages of Hypsibius

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F20%3AA21029CL" target="_blank" >RIV/61988987:17310/20:A21029CL - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/20:00537793 RIV/00216208:11310/20:10420925

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0044523120300991?via%3Dihub" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0044523120300991?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcz.2020.09.004" target="_blank" >10.1016/j.jcz.2020.09.004</a>

Result language

angličtina

Original language name

Integrative approach reveals new species of water bears (Pilatobius, Grevenius, and Acutuncus) from Arctic cryoconite holes, with the discovery of hidden lineages of Hypsibius

Original language description

A crucial step in understanding glacial ecosystems is to elucidate their biodiversity. Although tardigrades (water bears) are one of the most common and abundant metazoans inhabiting glaciers, knowledge of their taxonomic diversity on these ice masses remains scarce. The fragmentary data about the diversity of metazoans in glacial ecosystems is a warning sign in the era of global warming that seriously threatens cold-adapted specialists. Based on morphological, morphometric and DNA analyses (18S rRNA, 28S rRNA, COI), we identified tardigrade taxa from water -filled reservoirs in the glacier surface (cryoconite holes) in the Arctic (Svalbard and Greenland). Here we describe three species new to science: Pilatobius glacialis sp. nov., Acutuncus mariae sp. nov. and Grevenius cryophilus sp. nov. In addition to their morphological and genetic differences, these species are easily distinguished from their close relatives by their thermally stable niche, cryoconite holes, in which water temperature at the bottom oscillates around 0.1 degrees C during the polar summer. Moreover, we found the genus Acutuncus, considered a pan-Antarctic taxon, in cryoconite holes on Svalbard. Additionally, we discovered three new species of the Hypsibius dujardini complex by DNA analysis. Their delimitation is currently based on genetic differences and further morphometric studies may aid in distinguishing them. Our study revealed a new view on the biogeography of glacier tardigrades and the genus Acutuncus, as well as emphasized the uniqueness of glacier metazoans.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ZOOLOGISCHER ANZEIGER

ISSN

0044-5231

e-ISSN

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Volume of the periodical

289

Issue of the periodical within the volume

listopad

Country of publishing house

DE - GERMANY

Number of pages

25

Pages from-to

141-165

UT code for WoS article

000598342400004

EID of the result in the Scopus database

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