TY - JOUR TI - Description of Paramoeba atlantica n. sp. (Amoebozoa, Dactylopodida) – a Marine Amoeba from the Eastern Atlantic, with Emendation of the Dactylopodid Families AU - Kudryavtsev, Alexander AU - Pawlowski, Jan AU - Hausmann, Klaus TI - Description of Paramoeba atlantica n. sp. (Amoebozoa, Dactylopodida) – a Marine Amoeba from the Eastern Atlantic, with Emendation of the Dactylopodid Families AB - A strain of marine amoeba has been isolated and studied from the bottom sediments of the Great Meteor Seamount (Atlantic Ocean, 29°36.29′N; 28°59.12′W; 267.4 m deep). This amoeba has a typical dactylopodiid morphotype, a coat of delicate, boat-shaped scales, and a Perkinsela-like organism (PLO), an obligatory, deeply-specialized kinetoplastid symbiont near the nucleus. These characters allow us to include this species into the genus Paramoeba. However, it differs from its only described species, P. eilhardi, in the structure of scales. P. atlantica n. sp. is established therefore to accommodate the studied strain. SSU rRNA gene sequence analysis suggests that P. atlantica belongs to the Dactylopodida, and is sister to a monophyletic clade of P. eilhardi and all Neoparamoeba spp., branching separately from P. eilhardi. Therefore, the genera Paramoeba and Neoparamoeba, currently defined based on the cell surface ultrastructure, might be paraphyletic and probably should be synonymized, as further evidence is accumulated. Based on the data available we emend the families Vexilliferidae and Paramoebidae to make them more consistent with the current phylogenetic schemes. VL - 2011 IS - Volume 50, Issue 3 PY - 2011 SN - 0065-1583 C1 - 1689-0027 SP - 239 EP - 253 DO - 10.4467/16890027AP.11.023.0023 UR - https://ejournals.eu/en/journal/acta-protozoologica/article/description-of-paramoeba-atlantica-n-sp-amoebozoa-dactylopodida-a-marine-amoeba-from-the-eastern-atlantic-with-emendation-of-the-dactylopodid-families KW - Amoebozoa KW - Dactylopodida KW - deep-sea protists KW - Paramoeba atlantica n. sp. KW - phylogeny KW - SSU rDNA KW - taxonomy KW - ultrastructure