First Record of Six Marine Ciliate Species of Genus Strombidium (Ciliophora: Spirotricha: Oligotrichia) from Korea with Ecological Notes

Abstract

To supply the morphological and ecological information of oligotrich ciliates in Korea, water samples were seasonally collected in Gwangyang Bay and Jinhae Bay from August, 2010 to February, 2012 and processed by quantitative protargol staining method. As a result, six species belonging to the genus Strombidium Claparede and Lachmann, 1859 are identified: Strombidium emergens Kahl, 1932; S. dalum Lynn et al., 1988; S. epidemum Lynn et al., 1988; S. tressum Lynn et al., 1988; S. bilobum Lynn and Gilron, 1993; S. pollostomum Lynn and Gilron, 1993. These six species were newly reported from Korean coastal waters. Strombidium emergens is a middle sized Strombidium (20-50 μm in length) and has open and deep oral groove to girdle portion. Strombidium dalum is a small sized Strombidium (?20 μm in length), that has torch-like spiral anterior membranelles and an inverted triangles-shaped macronucleus on the posterior pole. The small sized S. epidemum has conspicuous trichites surrounding the girdle portion and ventral membranelles distinctly separated from anterior membranelles. The small sized S. tressum has torch-like spiral and extremely long trichites among the cilia of anterior membranelles. The middle sized S. bilobum has a bilobed macronucleus. Strombidium pollostomum is also a small sized Strombidium but its ventral membranelles are continuously connected with anterior membranelles. The five species except S. emergens occurred frequently over the wide range of water temperatures and salinities

Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea

“…Oligotrich ciliates, which are commonly found in marine, brackish, and freshwater habitats, are a species‐rich group of ciliates and have been of great interest to protozoologists working in ecological fields because of their important role in the pelagic microbial food loop (Song, Wang & Warren, ; Fenchel, ; Caron et al ., ). Recent research, however, has indicated that this assemblage is much more diverse than previously supposed (Song, Warren & Hu, ; Kim et al ., ; Agatha, , ; Lee et al ., ; Liu et al ., ; Tsai, Chen & Chiang, ), and there is a pressing need for thorough taxonomic investigations of the large number of previously unknown species. For these unknown taxa, analyses that combine traditional methods (e.g.…”

Observations on dinoflagellate parasites of aloricate ciliates in Korean coastal waters

“…Host cells were identified to genus or species using the primary literature and web-based resources (e.g. Lynn et al 1988, Lynn & Gilron 1993, Lee et al 2011, 2012, Encyclopedia of Life http://eol.org). Graphics and statistical comparisons were generated using SPSS Systat software (SigmaPlot Version 11.0).…”