Kathablepharidae Vurs 1992

• Main Author: Patterson, Won Je Lee David J.
• Format: Text
• Language: unknown
• Published: Zenodo 2000
• Subjects: Biodiversity; Taxonomy; Chromista; Cryptophyta; Leucocryptea; Kathablepharida; Kathablepharidae; Canada; Greenland; Botany Bay
• Online Access: https://dx.doi.org/10.5281/zenodo.5281826; https://zenodo.org/record/5281826

Kathablepharidae Vùrs, 1992 Kathablepharis remigera (Vùrs, 1992) Clay and Kugrens, 1999 (®gures 22g, 23a±c) Description. Cell measuring 12±18 Mm long, not ¯attened, with two rows of extrusomes located ventrally. Cells are oblong or cylindrical with two ¯agella inserting subapically. The ¯agella are thick, longer than the cell, unequal in length and may coil around the body during swimming. The anterior ¯agellum is about twice the length of the cell and may coil up during resting, and the posterior ¯agellum is about three times the cell length. The nucleus lies in the middle of the cell. Cells rotate while swimming. Rarely observed. Remarks. This species was recently transferred from Leucocryptos to the genus Kathablepharis by Clay and Kugrens (1999). It has been found from marine sites in Canada, Denmark, England, Gulf of Finland and Greenland, and the length was reported to be 7±25 Mm under the name Leucocryptos remigera (Vùrs, 1992a, 1992b, 1993a; Vùrs et al ., 1995; Tong, 1997b). We observed one very large cell (40 Mm) which bore the general characteristic s of Kathablepharis (®gure 23c), but the posterior ¯agellum coiled up in the resting cell like Platychilomona s psammobi a . The cell has pellicular striations. This species resembles Leucocryptos marina (Braarud, 1953) Butcher, 1967, but L. marina may be distinguishe d by the droplet-shape d body, two ¯agella of similar length, ¯agellar beat patterns, and diOEerent swimming pattern (see Vùrs, 1992c). Platychilomonas psammobia Larsen and Patterson, 1990 (®gures 22h, 23d, e) Description. Cell outline oval, 18±20 Mm long, 11±13 Mm wide, laterally compressed, with two rows of extrusomes lying at the margin of the cell. Two ¯agella insert laterally and subapically in a depression in the right ventral side of the cell and are longer than the cell. In resting cells, the anterior ¯agellum is held to the left margin of the cell and the posterior ¯agellum is coiled up. The nucleus is located in the posterior part of the cell. Cells move rapidly by swimming and contained other algae as food. Rarely observed. Description based on observations of six cells. Remarks. Larsen and Patterson (1990) described this species from marine sites in Danish Wadden Sea, England and Fiji, and cell length was reported to be 15± 20 Mm. Platychilomona s psammobia can be easily distinguished from other colourless ¯agellates by being ¯attened, by its two rows of extrusomes and its coiled posterior ¯agellum. This species is like Kathablepharis remigera in having two rows of extrusomes and in swimming patterns, but when the cell rests it can be distinguished by the coiled posterior ¯agellum and its ¯atness. : Published as part of Patterson, Won Je Lee David J., 2000, Heterotrophic ¯ agellates (Protista) from marine sediments of Botany Bay, Australia, pp. 483-562 in Journal of Natural History 34 on pages 543-544 : {"references": ["CLAY, B. and KUGRENS, P., 1999, Systematics of the enigmatic kathablepharids, including EM characterization of the type species, Kathablephari s phoenikoston, and new observations on K. remigera comb. nov., Protist, 150, 43 \u00b1 59.", "TONG, S. M., 1997 b, Heterotrophic \u00af agellates and other protists from Southampton water, U. K., Ophelia, 47, 71 \u00b1 131.", "LARSEN, J. and PATTERSON, D. J., 1990, Some \u00af agellates (Protista) from tropical marine sediments, Journal of Natural History, 24, 801 \u00b1 937."]}