Work

Taxonomic study on marine ciliates from Japan, with description of a new species, Caryotricha orientalis nov. spec. (Alveolata: Ciliophora)

Year: 2025

Type: article

Abstract: Marine ciliates from Japan were insufficiently studied. In this work, three species of class Spirotrichea Bütschli, 1889, collected from coastal water of Nagasaki, were morphologically investigated using protargol staining method. The results revealed that one represents an unknown species, Caryotricha orientalis nov. spec., and the others can be identified as Paradiophrys irmgard (Mansfeld, 1923) Jankowski, 1978 and Actinotricha saltans Cohn, 1866, the latter two species being new records for Japan. The new species is characterized by its medium-sized body, 19 adoral membranelles, about eight cirral rows extending posteriorly to mid-body, six transverse cirri arranged in two rows, and a migratory row of four cirri as well as eight dorsal kineties. Meanwhile, supplementary data on morphology and micrographs and ecological factors were provided for two known species, which thus help to circumscribe both species and increase our knowledge about distribution.

Source: Zootaxa

DOI: 10.11646/zootaxa.5584.2.5

Authors: YUE HU, TOSHIKAZU SUZUKI, XIAO-ZHONG HU

Institutions: University of Reading, Nagasaki University, Ocean University of China

Language: English

Topic: Protist diversity and phylogeny

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

SDG: Life below water

Open Access status: green

Funder: Japan Society for the Promotion of Science