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A new urostylid ciliate, Holostichides (Holostichides) parachardezi, collected from a Chinese tropical city, was studied using morphological and molecular methods. Diagnostic features of the new species include: size 140-180 × 30-60 μm in vivo; 25-43 macronuclear nodules; colourless cortical granules; three to six frontoterminal cirri; a midventral complex composed of seven to eleven cirral pairs and one midventral row of five to eleven cirri; four bipolar dorsal kineties and six to nine caudal cirri in four groups; and a terrestrial habitat. Its ontogenesis follows the typical Holostichides mode in that (1) the proximal portion of the parental adoral zone of membranelles is partly renewed and the opisthe's oral primordium originates very close to the midventral complex; (2) the last anlage n generates the frontoterminal cirral row, and the midventral complex is formed from anlage IV to n - 1; and (3) both marginal rows and dorsal kinety anlagen develop within the parental rows. The present SSU rDNA phylogenies corroborated the monophyly of the genus Holostichides.
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http://dx.doi.org/10.1016/j.ejop.2024.126124 | DOI Listing |
medRxiv
July 2025
Mental Illness Research, Education and Clinical Center, Crescenz VAMC, Philadelphia, PA 19104, USA.
Chronic pain is a complex clinical problem comprising multiple conditions that may share a common genetic profile. Genome-wide association studies (GWAS) have identified many risk loci whose cell-type context remains unclear. Here, we integrated GWAS data on chronic pain ( = 1,235,695) with single-cell RNA sequencing (scRNA-seq) data from human brain and dorsal root ganglia (hDRG), and single-cell chromatin accessibility data from human brain and mouse dorsal horn.
View Article and Find Full Text PDFZootaxa
March 2025
Zoological Survey of India (Ministry of Environment; Forest and Climate Change; Government of India); FPS Building; Indian Museum complex; Kolkata 700016; India..
In this study, two species belonging to the genus Eutyphoeus Michaelsen, 1900, and the rare monotypic genus Priodoscolex Gates, 1940, are described based on collections deposited in the National Zoological Collections, General Non-Chordata Section, Zoological Survey of India, Kolkata. Eutyphoeus unithecus Ahmed & Marimuthu, sp. nov.
View Article and Find Full Text PDFJ Eukaryot Microbiol
May 2025
Laboratory of Protozoans in Coastal Water Environments, School of Marine Sciences, Ningbo University, Ningbo, China.
Newly discovered hypotrich ciliates with evolutionary innovations are challenging to the established systematics and greater interest. Based on living morphology, infraciliature, and SSU rDNA, two bakuellid taxa-including a new species and a new subspecies-collected from subtropical soil environments in eastern China were investigated in the present study. Holostichides (Extraholostichides) eastensis ningboensis n.
View Article and Find Full Text PDFEur J Protistol
October 2024
The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China. Electronic address:
Zookeys
March 2024
Thackeray Wildlife Foundation, Mumbai, 400051, India Thackeray Wildlife Foundation Mumbai India.
Two new species allied to are described from the eastern slopes of the south Western Ghats, Tamil Nadu, India. Both new species are members of the subclade within the clade. The two new species can be easily distinguished from all other members of the clade and each other by a combination of nonoverlapping morphological characters such as small body size, distinct colouration of both sexes, the number of dorsal tubercles around the body, the number or arrangement of paravertebral tubercles, the number of midventral scales across the belly and longitudinal ventral scales from mental to cloaca, besides uncorrected pairwise ND2 and 16S sequence divergence of ≥ 7.
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