Novel contribution to the taxonomy and molecular phylogeny of scuticociliates (Protozoa): Resolving the non-monophyly of the genus Paranophrys Thompson and Berger, 1965 and the establishment of the genus Anteparanophrys n. Gen

Journal of Invertebrate Pathology, Journal Year: 2025, Volume and Issue: 209, P. 108267 - 108267

Published: Jan. 4, 2025

Language: Английский

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Redescription and phylogeny of the little-known type species Rhinakis faurei Deroux, 1994 (Alveolata, Ciliophora, Nassophorea)

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, Journal Year: 2025, Volume and Issue: 75(2)

Published: Feb. 5, 2025

Ciliates of the class Nassophorea Small & Lynn, 1981, inhabit a wide range aquatic environments and serve as trophic link in microbial food webs. However, their diversity remains underestimated. In present study, morphology molecular phylogeny Rhinakis faurei Deroux, 1994, an insufficiently known nassulid ciliate, were investigated using integrative taxonomic approach. The studied population was collected from freshwater pond Qingdao, China. Details live ciliature R. are documented for first time, improved species diagnosis is provided. Phylogenetic analyses small subunit ribosomal RNA gene sequence revealed that clusters within family Nassulidae de Fromentel, 1874. evolutionary interrelationships remain obscure owing to under-sampling, lack data most nominal species, low nodal support or unstable tree topologies.

Language: Английский

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A Reassessment of Phylogenetic Relationships in Class Oligohymenophorea (Protista, Ciliophora) Based on Updated Multigene Data

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(2)

Published: Feb. 1, 2025

ABSTRACT Within the ciliate class Oligohymenophorea, many evolutionary relationships among taxa remain unresolved. This study incorporates 97 new sequences from 30 oligohymenophorean populations, including nuclear small subunit ribosomal (SSU‐rRNA) genes, ITS1‐5.8S‐ITS2 rRNA regions, large (LSU‐rRNA) mitochondrial cytochrome oxidase c I (cox 1) and RNA (mtSSU‐rRNA) genes. With addition of these sequences, we performed comprehensive multigene phylogenetic analyses Oligohymenophorea. The main findings are: (1) Utilizing multiple genes is instrumental in improving within Oligohymenophorea; (2) Oligohymenophorea divided into two distinct groups: (i) encompassing subclass Hymenostomatia, Scuticociliatia, Apostomatia, Astomatia, Urocentria; (ii) comprising subclasses Peniculia Peritrichia; (3) Revising placement Urocentrida reveals its transitional role as a taxon between Group II. It emerges sister clade to Hymenostomatia; (4) positions Astomatia Apostomatia ‘SAA’ become clearer; (5) order Loxocephalida represents an early member Scuticociliatia serves potential prototype for this taxonomic group. provides more information understanding

Language: Английский

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Systematic positions and taxonomy of two freshwater ciliates found in China, with establishments of one new family and two new species (Ciliophora, Oligohymenophorea)

European Journal of Taxonomy, Journal Year: 2025, Volume and Issue: 981, P. 1 - 20

Published: March 5, 2025

The morphology and molecular phylogeny of two freshwater ciliates, Pseudotetrahymena orientalis gen. et sp. nov. Cyclidium paravorax nov., collected from Harbin, Northeast China, were investigated based on live specimens ciliary pattern; the phylogenetic placements inferred SSU-rRNA gene. Pseudotetrahymenidae fam. assigned to order Tetrahymenida Fauré-Fremiet in Corliss, 1956, can be distinguished other families by its membranelle 2 consisting several clusters shape cell. new species C. is similar vorax Pan, 2020 most morphological features except 3, which single-rowed. Phylogenetic analyses gene sequence indicate that lies periphery clade forms an independent, fully supported clade. groups with glaucoma Müller, 1773, supports assignment genus 1773.

Language: Английский

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Rediscovery and morpho-molecular characterization of three astome ciliates, with new insights into eco-evolutionary associations of astomes with their annelid hosts

Marine Life Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

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Morphology and taxonomy of a new species of a rare genus Paracolpidium (Ciliophora, Oligohymenophorea), P. Harbinense sp. nov. from Northeast China

Protist, Journal Year: 2025, Volume and Issue: unknown, P. 126097 - 126097

Published: March 1, 2025

Language: Английский

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Diversity in freshwater scuticociliates (Alveolata, Ciliophora, Scuticociliatia): two new species isolated from a wetland in northern China, focusing on their morphology, taxonomy, and molecular phylogeny, with establishment of a new family Glauconematidae fam. nov.

Water Biology and Security, Journal Year: 2024, Volume and Issue: 3(3), P. 100275 - 100275

Published: June 14, 2024

In the aquatic microbial food web, scuticociliates are diverse and predominant in almost all kinds of biotopes while extremely confused regarding their taxonomy systematic relationships within subclass Scuticociliatia. Here we provide detailed descriptions two new one known species, Glauconema sinica sp. nov., Pleuronema parasetigerum Histiobalantium natans viridis, isolated from a freshwater wetland northern China, along with molecular phylogeny based on SSU rRNA gene sequences. Our results show: (1) both morphological data strongly support that lineage containing genera Glauconema, Miamiensis, Paramesanophrys, Anophryoides should be identified as taxon at family level order Philasterida; hence, family, Glauconematidae fam. is established. This mainly characterized by polymorphic life cycle its members (macrostome microstome stages); trophont (or macrostome) has closely spaced membranelles 1–3, whereas tomite microstome) membranelle 1 distant 2. (2) Phylogenetic analyses using novel for these species revealed three cluster congeners, supporting validity to which they belong. Molecular information also supports monophyly main scuticociliate orders Pleuronematida Philasterida.

Language: Английский

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Linking multi-gene and morphological data in the subclass Scuticociliatia (Protista, Ciliophora) with establishment of the new family Homalogastridae fam. nov.

Marine Life Science & Technology, Journal Year: 2024, Volume and Issue: 7(1), P. 1 - 22

Published: Dec. 19, 2024

Language: Английский

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Morphology and molecular phylogeny of Pelagothrix abietum (Penard, 1922) and two new Metacystis and Apolagynus species (Ciliophora, Prostomatea)

European Journal of Protistology, Journal Year: 2024, Volume and Issue: 96, P. 126122 - 126122

Published: Oct. 1, 2024

Language: Английский

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Description of Conchophthirus sinanodontae n. sp. (Ciliophora: Scuticociliatia), a new endocommensal ciliate of the freshwater mussel Sinanodonta woodiana from Korea

European Journal of Protistology, Journal Year: 2024, Volume and Issue: 95, P. 126112 - 126112

Published: Aug. 1, 2024

Language: Английский

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