New multilocus phylogeny reorganises the family Macrobiotidae (Eutardigrada) and unveils complex morphological evolution of the Macrobiotus hufelandi group
Stec, D., Vecchi, M., Calhim, S., & Michalczyk, Ł. (2021). New multilocus phylogeny reorganises the family Macrobiotidae (Eutardigrada) and unveils complex morphological evolution of the Macrobiotus hufelandi group. Molecular Phylogenetics and Evolution, 160, Article 106987. https://doi.org/10.1016/j.ympev.2020.106987
Published inMolecular Phylogenetics and Evolution
© 2020 the Authors
The family Macrobiotidae is one of the most speciose and diverse groups among tardigrades. Although there have been attempts to reconstruct the phylogeny of this family, the evolutionary relationships within Macrobiotidae are only superficially determined as available genetic data cover only a small fraction of this vast group. Here, we present the first extensive molecular phylogeny of the family based on four molecular markers (18S rRNA, 28Sr RNA, ITS-2 and COI) associated with detailed morphological data for the majority of taxa. The phylogenetic analysis includes nearly two hundred sequences representing more than sixty species, including sixteen taxa that have never been sequenced and/or analysed phylogenetically before. Our results recovered a new monophyletic group, comprising Macrobiotus spectabilis Thulin, 1928 and Macrobiotus grandis Richters, 1911, for which we erect a new genus, Sisubiotus gen. nov., to accommodate its evolutionary distinctiveness. The largest, so far, dataset for the family Macrobiotidae showed that the genus Xerobiotus is nested within the clade representing the genus Macrobiotus deeper than it was earlier assumed, therefore we propose to suppress Xerobiotus and transfer its species to Macrobiotus. Moreover, mapping key morphological traits onto macrobiotid phylogeny exposes complex evolution of phenotypes within the Macrobiotus hufelandi group, i.e. Macrobiotus s.s. Finally, our findings enabled a detailed revision and discussion on species compositions of the most ubiquitous tardigrade genera, species groups and species complexes, which resulted in changes of taxonomic statuses of a number of macrobiotid species. All this contributes to the reconstruction of the morphological evolution within Macrobiotidae. ...
Publication in research information system
MetadataShow full item record
Additional information about fundingThe study was supported by the Preludium programme of the Polish National Science Centre (grant no. 2018/31/N/NZ8/03096 to DS supervised by ŁM). During this study, DS was a beneficiary of a National Science Centre scholarship to support doctoral research (no. 2019/32/T/NZ8/00348). Some of the analyses were carried out with the equipment purchased from the Sonata Bis programme of the Polish National Science Centre (grant no. 2016/22/E/NZ8/00417 to ŁM). Open-access publication of this article was funded by the BioS Priority Research Area under the program “Excellence Initiative – Research University” at the Jagiellonian University in Kraków, Poland. ...
Showing items with similar title or keywords.
Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotidae) from Mississippi (USA) and Crete (Greece) Vecchi, Matteo; Stec, Daniel (Pensoft Publishers, 2021)In this paper, we describe two new Macrobiotus species from Mississippi (USA) and Crete (Greece) by means of integrative taxonomy. Detailed morphological data from light and scanning electron microscopy, as well as molecular ...
Integrative taxonomy resolves species identities within the Macrobiotus pallarii complex (Eutardigrada: Macrobiotidae) Stec, Daniel; Vecchi, Matteo; Dudziak, Magdalena; Bartels, Paul J.; Calhim, Sara; Michalczyk, Łukasz (Biomed Central, 2021)The taxonomy of many groups of meiofauna is challenging due to their low number of diagnostic morphological characters and their small body size. Therefore, with the advent of molecular techniques that provide a new source ...
The relative roles of natural and sexual selection in the evolution of tardigrade gamete morphology Ryndov, Serge (2021)Siittiösolut ovat eläinkunnassa esiintyvistä solutyypeistä monimuotoisin ryhmä. Siittiösoluissa esiintyvän muuntelun on useissa eläintaksoneissa havaittu olevan yhteydessä parittelun jälkeisen seksuaalivalinnan tasoon sekä ...
Eco‐evolutionary dynamics driven by fishing : from single species models to dynamic evolution within complex food webs Perälä, Tommi; Kuparinen, Anna (Wiley-Blackwell, 2020)Evidence of contemporary evolution across ecological time scales stimulated research on the eco‐evolutionary dynamics of natural populations. Aquatic systems provide a good setting to study eco‐evolutionary dynamics owing ...
Resolving the systematics of Richtersiidae by multilocus phylogeny and an integrative redescription of the nominal species for the genus Crenubiotus (Tardigrada) Stec, Daniel; Vecchi, Matteo; Maciejowski, Wojciech; Michalczyk, Łukasz (Nature Publishing Group, 2020)The family Richtersiidae, although established recently with the use of phylogenetic methods, was considered potentially paraphyletic at the time of its erection. Until now, the family comprised four genera, Richtersius, ...