Expanding Acutuncus: Phylogenetics and morphological analyses reveal a considerably wider distribution for this tardigrade genus

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Expanding Acutuncus: Phylogenetics and morphological analyses reveal a considerably wider distribution for this tardigrade genus. / Vecchi, Matteo; Цветкова, Александра Юрьевна; Stec, Daniel; Ferrari, Claudio; Calhim, Sara; Туманов, Денис Владимирович.

In: Molecular Phylogenetics and Evolution, Vol. 180, 107707, 01.03.2023.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{2cc68ad257524083b01a9d17d8321c09,

title = "Expanding Acutuncus: Phylogenetics and morphological analyses reveal a considerably wider distribution for this tardigrade genus",

abstract = "The tardigrade genus Acutuncus has been long thought to be an Antarctic endemism, well adapted to this harsh environment. The Antarctic endemicity of Acutuncus was recently dispelled with the description of Acutuncus mariae Zawierucha, 2020 found in the Svalbard archipelago. The integrated analyses on two newly found Acutuncus populations from UK and Italy, and a population of Acutuncus antarcticus found close to its type locality allowed us to expand the climatic and geographic range of the genus Acutuncus. These findings also allowed us to re-evaluate the morphological diagnoses of Acutuncus and accommodate it in the newly proposed monotypic family Acutuncidae fam. nov. Two new Acutuncus species morpho-groups are instituted based on eggs morphology: one (Acutuncus antarcticus morphogroup) including the Antarctic Acutuncus taxa characterized by eggs with long pillars within the chorion and eggs laid freely to the environment, the other (Acutuncus mariae morphogroup) including the European species, characterized by eggs with short pillars within the chorion and eggs laid in the exuvium. Finally, we describe two new Acutuncus species from Europe: Acutuncus mecnuffi sp. nov. and Acutuncus giovanniniae sp. nov.",

keywords = "Antarctica, Endemism, Integrative taxonomy, Polar region, Tardigrade",

author = "Matteo Vecchi and Цветкова, {Александра Юрьевна} and Daniel Stec and Claudio Ferrari and Sara Calhim and Туманов, {Денис Владимирович}",

year = "2023",

month = mar,

day = "1",

doi = "10.1016/j.ympev.2023.107707",

language = "English",

volume = "180",

journal = "Molecular Phylogenetics and Evolution",

issn = "1055-7903",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Expanding Acutuncus: Phylogenetics and morphological analyses reveal a considerably wider distribution for this tardigrade genus

AU - Vecchi, Matteo

AU - Цветкова, Александра Юрьевна

AU - Stec, Daniel

AU - Ferrari, Claudio

AU - Calhim, Sara

AU - Туманов, Денис Владимирович

PY - 2023/3/1

Y1 - 2023/3/1

N2 - The tardigrade genus Acutuncus has been long thought to be an Antarctic endemism, well adapted to this harsh environment. The Antarctic endemicity of Acutuncus was recently dispelled with the description of Acutuncus mariae Zawierucha, 2020 found in the Svalbard archipelago. The integrated analyses on two newly found Acutuncus populations from UK and Italy, and a population of Acutuncus antarcticus found close to its type locality allowed us to expand the climatic and geographic range of the genus Acutuncus. These findings also allowed us to re-evaluate the morphological diagnoses of Acutuncus and accommodate it in the newly proposed monotypic family Acutuncidae fam. nov. Two new Acutuncus species morpho-groups are instituted based on eggs morphology: one (Acutuncus antarcticus morphogroup) including the Antarctic Acutuncus taxa characterized by eggs with long pillars within the chorion and eggs laid freely to the environment, the other (Acutuncus mariae morphogroup) including the European species, characterized by eggs with short pillars within the chorion and eggs laid in the exuvium. Finally, we describe two new Acutuncus species from Europe: Acutuncus mecnuffi sp. nov. and Acutuncus giovanniniae sp. nov.

AB - The tardigrade genus Acutuncus has been long thought to be an Antarctic endemism, well adapted to this harsh environment. The Antarctic endemicity of Acutuncus was recently dispelled with the description of Acutuncus mariae Zawierucha, 2020 found in the Svalbard archipelago. The integrated analyses on two newly found Acutuncus populations from UK and Italy, and a population of Acutuncus antarcticus found close to its type locality allowed us to expand the climatic and geographic range of the genus Acutuncus. These findings also allowed us to re-evaluate the morphological diagnoses of Acutuncus and accommodate it in the newly proposed monotypic family Acutuncidae fam. nov. Two new Acutuncus species morpho-groups are instituted based on eggs morphology: one (Acutuncus antarcticus morphogroup) including the Antarctic Acutuncus taxa characterized by eggs with long pillars within the chorion and eggs laid freely to the environment, the other (Acutuncus mariae morphogroup) including the European species, characterized by eggs with short pillars within the chorion and eggs laid in the exuvium. Finally, we describe two new Acutuncus species from Europe: Acutuncus mecnuffi sp. nov. and Acutuncus giovanniniae sp. nov.

KW - Antarctica

KW - Endemism

KW - Integrative taxonomy

KW - Polar region

KW - Tardigrade

UR - https://www.mendeley.com/catalogue/ef5f10b3-ea07-3193-aeb2-5b4781d3f7ff/

U2 - 10.1016/j.ympev.2023.107707

DO - 10.1016/j.ympev.2023.107707

M3 - Article

VL - 180

JO - Molecular Phylogenetics and Evolution

JF - Molecular Phylogenetics and Evolution

SN - 1055-7903

M1 - 107707

ER -

ID: 114645487