TY - JOUR

T1 - Thecamoeba foliovenanda n. sp. (Amoebozoa, Discosea, Thecamoebida) – one more case of sibling species among amoebae of the genus Thecamoeba

AU - Mesentsev, Y. Mesentsev

AU - Kamyshatskaya, O.

AU - Smirnov, A.

N1 - Publisher Copyright: © 2020 Elsevier GmbH

PY - 2020/10

Y1 - 2020/10

N2 - Until recently it seemed that amoebae of the genus Thecamoeba can be reliably identified using light-microscopic characters, like the size and shape of the cell, a characteristic pattern of folds and ridges and structure of the nucleus. However, recent molecular studies show the presence of sibling species that can be reliably distinguished based on the gene sequence data only. Here we describe a new terrestrial species, Thecamoeba foliovenanda n. sp. This species is almost identical with T. similis in light-microscopy, which has minor differences in the ultrastructure but considerable differences in the SSU rRNA gene sequence. We investigated the light-microscopic data, as well as transmission electron-microscopic images and videorecords on the type strain of Thecamoeba similis 1583/8 and performed its comparison with the new species. This study further supports the conclusion that species of the genus Thecamoeba nowadays require gene sequencing for reliable identification and species distinction.

AB - Until recently it seemed that amoebae of the genus Thecamoeba can be reliably identified using light-microscopic characters, like the size and shape of the cell, a characteristic pattern of folds and ridges and structure of the nucleus. However, recent molecular studies show the presence of sibling species that can be reliably distinguished based on the gene sequence data only. Here we describe a new terrestrial species, Thecamoeba foliovenanda n. sp. This species is almost identical with T. similis in light-microscopy, which has minor differences in the ultrastructure but considerable differences in the SSU rRNA gene sequence. We investigated the light-microscopic data, as well as transmission electron-microscopic images and videorecords on the type strain of Thecamoeba similis 1583/8 and performed its comparison with the new species. This study further supports the conclusion that species of the genus Thecamoeba nowadays require gene sequencing for reliable identification and species distinction.

KW - Amoebozoa

KW - Phylogeny

KW - Sibling species

KW - Systematics

KW - Thecamoeba

UR - http://www.scopus.com/inward/record.url?scp=85087959253&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/9601d0d3-1c8c-3606-a29d-2591148531cf/

U2 - 10.1016/j.ejop.2020.125716

DO - 10.1016/j.ejop.2020.125716

M3 - Article

VL - 76

JO - European Journal of Protistology

JF - European Journal of Protistology

SN - 0932-4739

M1 - 125716

ER -