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Kudryavtsev A, Voytinsky F, Volkova E. Coronamoeba villafranca gen. nov. sp. nov. (Amoebozoa, Dermamoebida) challenges the correlation of morphology and phylogeny in Amoebozoa. Sci Rep 2022; 12:12541. [PMID: 35869259 PMCID: PMC9307759 DOI: 10.1038/s41598-022-16721-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/14/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractCoronamoeba villafranca gen. nov. sp. nov. is a small amoeba isolated from the surface planktonic biotope in the Bay of Villefranche (Mediterranean Sea). It has a confusing set of morphological and molecular characters. Its locomotive form is subcylindrical and monopodial with monoaxial cytoplasmic flow and occasional hyaline bulging at the anterior edge (a monotactic morphotype). Based on this set of characters, this amoeba is most similar to members of the genus Nolandella (Tubulinea, Euamoebida). However, molecular phylogenetic analysis based on only the small subunit ribosomal RNA (SSU rRNA) gene and on two concatenated markers (SSU rRNA gene and actin) robustly places this species in the Discosea, specifically, in a clade with Dermamoeba and Paradermamoeba (Dermamoebida) as the closest described relatives, and several SSU rRNA clones from environmental DNA. A unique glycocalyx of the studied amoeba consisting of complex separate units with pentameric symmetry may be considered a unifying character of this species with other dermamoebids. The monotactic morphotype demonstrated by these amoebae primarily occurs in Tubulinea but was recently confirmed in other clades of Amoebozoa (e.g. Dactylopodida and Variosea). This morphotype may be the plesiomorphic mode of cell organization in Amoebozoa that might have evolved in the last amoebozoan common ancestor (LACA) and conserved in several lineages of this group. It may reflect basic characteristics of the cytoskeletal structure and functions in Amoebozoa.
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Kudryavtsev A, Völcker E, Clauß S, Pawlowski J. Ovalopodium rosalinum sp. nov., Planopodium haveli gen. nov, sp. nov., Planopodium desertum comb. nov. and new insights into phylogeny of the deeply branching members of the order Himatismenida (Amoebozoa). Int J Syst Evol Microbiol 2021; 71. [PMID: 33709902 DOI: 10.1099/ijsem.0.004737] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The order Himatismenida (Amoebozoa, Discosea) comprises naked amoebae with an organic coat that is located on the dorsal surface of the cell. The phylogenetic relationships among deeply branching genera of the Himatismenida are unclear, as data on the species diversity of the himatismenid genera is largely restricted to the derived genus Cochliopodium. Here, we describe two new amoeba species that branch at the base of the order Himatismenida, evidenced by SSU rRNA gene and multigene analyses. Among them, a freshwater species Planopodium haveli gen. nov., sp. nov. has a dorsal cell coat consisting of flat, oval scales. This species forms a clade at the base of the Himatismenida, and the previously described Ovalopodium desertum, its closest relative, is transferred into the new genus as Planopodium desertum comb. nov. Although the two species are barely distinguishable by their sequence data, they are clearly distinct in morphology. Using this data, we can report the first evidence of a dorsal cell coat consisting of scales outside of the genus Cochliopodium. The other species has a marine origin and branches deeply, close to the root of the phylogenetic tree of Himatismenida. Based on the morphology of this amoeba, it should be described as Ovalopodium rosalinum sp. nov., a new species of the genus Ovalopodium. Analyses of the phylogenetic relationships and the ultrastructure of the deeply branching himatismenids, together with several of the newly obtained gene sequences of Parvamoeba and Cochliopodium, suggest that some elements of the dorsal cell coat of Ovalopodium may be ancestral for Himatismenida and have been partly retained in various more derived species of this clade, in particular, Cochliopodium gallicum. Although actin and Cox1 gene data do not resolve the higher-level relationships in Himatismenida, they correspond to the grouping of species within most genera.
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Affiliation(s)
- Alexander Kudryavtsev
- Department of Invertebrate Zoology, Faculty of Biology, Saint-Petersburg State University, Universitetskaya nab., 7/9 199034 Saint-Petersburg, Russia.,Laboratory of Cellular and Molecular Protistology, Zoological Institute RAS, Universitetskaya nab., 1 199034 Saint-Petersburg, Russia
| | | | | | - Jan Pawlowski
- Institute of Oceanology, Polish Academy of Sciences, 81-712 Sopot, Poland.,ID-Gene ecodiagnostics, Campus Biotech Innovation Park, 1202, Geneva, Switzerland.,Department of Genetics and Evolution, University of Geneva, Sciences III, 1211 Geneva, Switzerland
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Mesentsev Y, Bondarenko N, Nassonova E, Smirnov A. Vannella primoblina n. sp. - an unusual species of the genus Vannella (Amoebozoa, Discosea, Vannellida) with pronounced dorsal ridges and folds. Eur J Protistol 2020; 77:125757. [PMID: 33307358 DOI: 10.1016/j.ejop.2020.125757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 10/23/2022]
Abstract
Amoebae of the order Vannellida (Amoebozoa, Discosea) have a fairly recognizable spatulate, fan-shaped or semi-circular outlines and a wide area of frontal hyaloplasm. They can be easily distinguished from the other groups of lobose amoebae even by light microscopy. The dorsal side of these amoebae is usually smooth and rarely bears ridges or folds, which are never numerous or regular. We have isolated an unusual species of vannellid amoebae, called Vannella primoblina n. sp. from a terrestrial substrate. It has well-developed dorsal relief consisting of regularly appearing folds and ridges. This amoeba superficially resembles members of the genus Thecamoeba. However, molecular analysis showed that this strain belongs to the genus Vannella. This finding indicates that dorsal folds may also be a characteristic of some species of vannellid amoebae and probably are a functional detail of the cell morphology rather than an apomorphy of Thecamoebida lineage. Overall outlines of the cell and the presence of the expanded frontal hyaline area remains the most reliable characters used to differentiate vannellid amoebae from other gymnamoebae lineages.
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Affiliation(s)
- Y Mesentsev
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia.
| | - N Bondarenko
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
| | - E Nassonova
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
| | - A Smirnov
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
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Lara E, Dumack K, García-Martín JM, Kudryavtsev A, Kosakyan A. Amoeboid protist systematics: A report on the "Systematics of amoeboid protists" symposium at the VIIIth ECOP/ISOP meeting in Rome, 2019. Eur J Protistol 2020; 76:125727. [PMID: 32755801 DOI: 10.1016/j.ejop.2020.125727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/22/2020] [Accepted: 06/25/2020] [Indexed: 01/21/2023]
Abstract
Amoeboid protists are extremely abundant and diverse in natural systems where they often play outstanding ecological roles. They can be found in almost all major eukaryotic divisions, and genomic approaches are bringing major changes in our perception of their deep evolutionary relationships. At fine taxonomic levels, the generalization of barcoding is revealing a considerable and unsuspected specific diversity that can be appreciated with careful morphometric analyses based on light and electron microscopic observations. We provide examples on the difficulties and advances in amoeboid protists systematics in a selection of groups that were presented at the VIIIth ECOP/ISOP meeting in Rome, 2019. We conclude that, in all studied groups, important taxonomical rearrangements will certainly take place in the next few years, and systematics must be adapted to incorporate these changes. Notably, nomenclature should be flexible enough to integrate many new high level taxa, and a unified policy must be adopted to species description and to the establishment of types.
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Affiliation(s)
- Enrique Lara
- Real Jardín Botánico de Madrid, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain.
| | - Kenneth Dumack
- Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Str. 47b, 50674 Köln, Germany
| | | | - Alexander Kudryavtsev
- Laboratory of Cellular and Molecular Protistology, Zoological Institute of the Russian Academy of Sciences, Universitetskaya nab. 1, 199034 Saint-Petersburg, Russia; Department of Invertebrate Zoology, Faculty of Biology, Saint-Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint-Petersburg, Russia
| | - Anush Kosakyan
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, 37005 Ceske Budejovice, Czech Republic
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DNA Metabarcoding of Deep-Sea Sediment Communities Using COI: Community Assessment, Spatio-Temporal Patterns and Comparison with 18S rDNA. DIVERSITY-BASEL 2020. [DOI: 10.3390/d12040123] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Among the complex ecosystems and habitats that form the deep sea, submarine canyons and open slope systems are regarded as potential hotspots of biodiversity. We assessed the spatial and temporal patterns of biodiversity in sediment communities of a NW Mediterranean Canyon and its adjacent open slope (Blanes Canyon) with DNA metabarcoding. We sampled three layers of sediment and four different depths (900–1750 m) at two seasons, and used a fragment of the mitochondrial gene cytochrome c oxidase subunit I (COI) as a metabarcoding marker. The final dataset contained a total of 15,318 molecular operational taxonomic units (MOTUs). Metazoa, Stramenopiles and Archaeplastida were the dominant taxa and, within metazoans, Arthropoda, Nematoda and Cnidaria were the most diverse. There was a trend towards decreasing MOTU richness and diversity in the first few cm (1 to 5) of the sediment, with only 26.3% of the MOTUs shared across sediment layers. Our results show the presence of heterogeneous communities in the studied area, which was significantly different between zones, depths and seasons. We compared our results with the ones presented in a previous study, obtained using the v7 region of the 18S rRNA gene in the same samples. There were remarkable differences in the total number of MOTUs and in the most diverse taxa. COI recovered a higher number of MOTUs, but more remained unassigned taxonomically. However, the broad spatio-temporal patterns elucidated from both datasets coincided, with both markers retrieving the same ecological information. Our results showed that COI can be used to accurately characterize the studied communities and constitute a high-resolution method to detect ecological shifts. We also highlight that COI reference databases for deep-sea organisms have important gaps, and their completeness is essential in order to successfully apply metabarcoding techniques.
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Kudryavtsev A, Volkova E, Plotnikov A. Vannella samoroda n. sp. (Amoebozoa) — First member of the genus from a continental saline habitat placed in a molecular tree. Eur J Protistol 2019; 71:125634. [DOI: 10.1016/j.ejop.2019.125634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/14/2019] [Accepted: 08/22/2019] [Indexed: 11/15/2022]
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Bondarenko N, Glotova A, Nassonova E, Masharsky A, Polev D, Smirnov A. The complete mitochondrial genome of Paravannella minima (Amoebozoa, Discosea, Vannellida). Eur J Protistol 2019; 68:80-87. [PMID: 30716623 DOI: 10.1016/j.ejop.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 12/24/2018] [Accepted: 01/09/2019] [Indexed: 10/27/2022]
Abstract
We present a complete sequence and describe the organization of the mitochondrial genome of the amoeba Paravannella minima (Amoebooza, Discosea, Vannellida). This tiny species represents a branch at the base of Vannellida tree, to the moment being its earliest-branching lineage. The circular mitochondrial DNA of this species has 53,464 bp in length and contains 30 protein-coding genes, 2 ribosomal RNAs, 23 transfer RNAs, and 15 open reading frames. This genome is significantly longer and contains more protein-coding genes than any yet sequenced mitochondrial genome of vannellid amoebae. Unlike the previously sequenced mitochondrial genomes of Vannellida, which should be translated using the "Table 4" (the mold, protozoan, and coelenterate mitochondrial code), that of P. minima can be properly translated using the universal genetic code.
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Affiliation(s)
- Natalya Bondarenko
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia.
| | - Anna Glotova
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
| | - Elena Nassonova
- Laboratory of Cytology of Unicellular Organisms, Institute of Cytology RAS, Tikhoretsky Ave. 4, 194064 St. Petersburg, Russia
| | - Alexey Masharsky
- Core Facility Centre for Molecular and Cell Technologies, St. Petersburg State University, Botanicheskaya ul. 17, Stary Peterhof, 198504 St. Petersburg, Russia
| | - Dmitry Polev
- Core Facility Centre Biobank, St. Petersburg State University, Botanicheskaya ul. 17, Stary Peterhof, 198504 St. Petersburg, Russia
| | - Alexey Smirnov
- Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
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Kudryavtsev A, Pawlowski J, Smirnov A. More amoebae from the deep-sea: Two new marine species of Vexillifera (Amoebozoa, Dactylopodida) with notes on taxonomy of the genus. Eur J Protistol 2018; 66:9-25. [DOI: 10.1016/j.ejop.2018.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/04/2018] [Accepted: 07/04/2018] [Indexed: 10/28/2022]
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Kudryavtsev A, Volkova E. Clydonella sawyeri n. sp. (Amoebozoa, Vannellida): Morphological and molecular study and a re-definition of the genus Clydonella Sawyer, 1975. Eur J Protistol 2018; 63:62-71. [DOI: 10.1016/j.ejop.2018.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/21/2018] [Accepted: 01/28/2018] [Indexed: 11/27/2022]
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Two new species of Ripella (Amoebozoa, Vannellida) and unusual intragenomic variability in the SSU rRNA gene of this genus. Eur J Protistol 2017; 61:92-106. [PMID: 28992523 DOI: 10.1016/j.ejop.2017.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 08/22/2017] [Accepted: 09/08/2017] [Indexed: 11/20/2022]
Abstract
Two new species, Ripella decalvata and R. tribonemae (Amoebozoa, Vannellida), are described and the diversity of known strains assigned to the genus analyzed. Ripella spp. are closely similar to each other in the light microscopic characters and sequences of small-subunit (SSU) ribosomal RNA gene, but differences in the cell coat structure and cytochrome oxidase (COI) gene sequences are more prominent. SSU rRNA in R. platypodia CCAP1589/2, R. decalvata and R. tribonemae demonstrates an unusual pattern of intragenomic variation. Sequencing of multiple molecular clones of this gene produced numerous sequence variants in a number of specific sites. These sites were usually terminal parts of several variable helices in all studied strains. Analysis of all known Ripella strains shows that SSU rRNA sites differing between strains of different origin are mainly restricted to these areas of the gene. There are only two sites, which differ between strains, but not within genomes. This intragenomic variability of the SSU rRNA gene, seemingly characteristic of all Ripella spp., was never reported to be so extensive in Amoebozoa. The data obtained show another example of complex organization of rRNA gene cluster in protists and emphasize caution needed when interpreting the metagenomic data based on this marker.
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Maciver SK, De Obeso Fernandez Del Valle A, Koutsogiannis Z. Vannella pentlandii n. sp., (Amoebozoa, Discosea, Vannellida) a small, cyst-forming soil amoeba. Exp Parasitol 2017; 183:109-116. [PMID: 28778744 DOI: 10.1016/j.exppara.2017.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/04/2017] [Accepted: 07/30/2017] [Indexed: 11/28/2022]
Abstract
We describe a new species of cyst-producing soil amoeba Vannella pentlandii from course pasture in the Pentland Hills, Scotland. Analysis of the 18S rDNA gene reveals that it belongs to the sub-group within the genus, presently composed of V. placida, V. epipetala and V. fimicola (the PEF group). This group share features such as longitudinal folds/ridges on the lamella (the anterior hyaline region of the trophozoite), stubby floating forms and cyst production. While each PEF species contain cyst producing strains, not all strains within these species do so. V. fimicola produces cysts on stalks leading to its former classification as a slime mould, however no such stalks were evident in the V. pentlandii, instead groups of cysts become piled on top of each other forming clumps. The encysting amoebae crawl toward each other, pushing some off the surface to form these mounds. The V. pentlandii trophozoites are of typical size for the genus but the cysts at 6.9 μm in diameter, are the smallest so far described in genus Vannella. Other cyst producing species are found in various branches within the Vannella phylogenetic tree, probably meaning that this ability was ancestral but lost in many branches (particularly in marine species), and perhaps re-gained in others.
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Affiliation(s)
- Sutherland K Maciver
- Centre for Integrative Physiology, Biomedical Sciences, Edinburgh Medical School, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, Scotland, UK.
| | - Alvaro De Obeso Fernandez Del Valle
- Centre for Integrative Physiology, Biomedical Sciences, Edinburgh Medical School, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, Scotland, UK
| | - Zisis Koutsogiannis
- Centre for Integrative Physiology, Biomedical Sciences, Edinburgh Medical School, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, Scotland, UK
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Blandenier Q, Lara E, Mitchell EA, Alcantara DM, Siemensma FJ, Todorov M, Lahr DJ. NAD9/NAD7 (mitochondrial nicotinamide adenine dinucleotide dehydrogenase gene)—A new “Holy Grail” phylogenetic and DNA-barcoding marker for Arcellinida (Amoebozoa)? Eur J Protistol 2017; 58:175-186. [DOI: 10.1016/j.ejop.2016.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 11/22/2016] [Accepted: 12/12/2016] [Indexed: 11/17/2022]
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Blandenier Q, Seppey CVW, Singer D, Vlimant M, Simon A, Duckert C, Lara E. Mycamoeba gemmipara nov. gen., nov. sp., the First Cultured Member of the Environmental Dermamoebidae Clade LKM74 and its Unusual Life Cycle. J Eukaryot Microbiol 2016; 64:257-265. [PMID: 27543384 DOI: 10.1111/jeu.12357] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/04/2016] [Accepted: 08/08/2016] [Indexed: 11/30/2022]
Abstract
Since the first environmental DNA surveys, entire groups of sequences called "environmental clades" did not have any cultured representative. LKM74 is an amoebozoan clade affiliated to Dermamoebidae, whose presence is pervasively reported in soil and freshwater. We obtained an isolate from soil that we assigned to LKM74 by molecular phylogeny, close related to freshwater clones. We described Mycamoeba gemmipara based on observations made with light- and transmission electron microscopy. It is an extremely small amoeba with typical lingulate shape. Unlike other Dermamoebidae, it lacked ornamentation on its cell membrane, and condensed chromatin formed characteristic patterns in the nucleus. M. gemmipara displayed a unique life cycle: trophozoites formed walled coccoid stages which grew through successive buddings and developed into branched structures holding cysts. These structures, measuring hundreds of micrometres, are built as the exclusive product of osmotrophic feeding. To demonstrate that M. gemmipara is a genuine soil inhabitant, we screened its presence in an environmental soil DNA diversity survey performed on an experimental setup where pig cadavers were left to decompose in soils to follow changes in eukaryotic communities. Mycamoeba gemmipara was present in all samples, although related reads were uncommon underneath the cadaver.
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Affiliation(s)
- Quentin Blandenier
- Laboratory of Soil Biodiversity, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - Christophe V W Seppey
- Laboratory of Soil Biodiversity, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - David Singer
- Laboratory of Soil Biodiversity, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - Michèle Vlimant
- Laboratory of Ecology and Evolution of Parasites, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - Anaële Simon
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - Clément Duckert
- Laboratory of Soil Biodiversity, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
| | - Enrique Lara
- Laboratory of Soil Biodiversity, Institute of Biology, University of Neuchâtel, Emile Argand 11, Neuchâtel, 2000, Switzerland
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Chavatte N, Lambrecht E, Van Damme I, Sabbe K, Houf K. Free-living protozoa in the gastrointestinal tract and feces of pigs: Exploration of an unknown world and towards a protocol for the recovery of free-living protozoa. Vet Parasitol 2016; 225:91-8. [DOI: 10.1016/j.vetpar.2016.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 06/01/2016] [Accepted: 06/02/2016] [Indexed: 01/26/2023]
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Morphology and phylogeny of Vannella croatica n. sp. (Amoebozoa, Discosea, Vannellida). Eur J Protistol 2016; 52:65-72. [DOI: 10.1016/j.ejop.2015.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 10/16/2015] [Accepted: 11/02/2015] [Indexed: 11/23/2022]
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Cunea n. g. (Amoebozoa, Dactylopodida) with two cryptic species isolated from different areas of the ocean. Eur J Protistol 2015; 51:197-209. [DOI: 10.1016/j.ejop.2015.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 03/30/2015] [Accepted: 04/01/2015] [Indexed: 11/17/2022]
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