Salpingoeca marina James

Aydin, Esra Elif & Lee, Won Je, 2022, Free-living Heterotrophic Flagellates Lakes in Turkey (Protista) from Two Hypersaline, Acta Protozoologica 61, pp. 85-98 : 88

Salpingoeca marina James –Clark 1867

( Figs 2j , 3p )

Cells are 5–7 μm long with a pedicel, which is about 1.5 times the cell length. The thin lorica is ovoid and slightly pointed at the posterior end which is connected to the pedicel, and has a short neck at the anterior end. Cells are filling out the posterior part of the lorica. The thickened flagellum is 1–1.5 times the cell length and is surrounded by the pseudopodial tentacles. The lorica attaches to the substrate by the pedicel. Observations based on 19 cells. Occurance: every month at Acı Lake, temperature 1–23.5 °C, salinity 24–67.5 psu, dissolved oxygen 3.75–13.2 mg /L.

Remarks: The genus Salpingoeca differs from the other loricated flagellates by having a single theca, which comprises only of the cell, lacking silicified costae, by being closed at posterior end, by being sedentary and by not forming colonies (Trondsen 1974, Thomsen and Buck 1991). Species of the genus is discriminated according to the morphology of theca ( Vørs 1992a). Salpingoeca marina is very similar to S. infusionum Kent 1880, but it is distinguished by the stiffness of the lorica and because the lorica of S. infusionum is slightly wider anteriorly than that of S. marina ( Tong 1997a) . Salpingoeca marina is reported from Antarctica, North Atlantic, subtropical Australia, England, Denmark, Gulf of Finland, France, Germany, Turkey and USA (James-Clark 1867, Griessmann 1913; Wailes 1929, 1939; Ruinen 1938; Vørs 1992a, b; Patterson et al. 1993; Tong 1997a, b; Tong et al. 1998, Aydın and Lee 2012).

Figures

Fig. 2. (a) Ancyromonas sigmoides, (b) Neobodo curvifilus, (c) Chelonemonas sp., (d) Carpediemonas membranifera, (e) Caecitellus parvulus, (f) Codosiga botrytis, (g) Cafeteria roenbergensis, (h) Pleurostomum flabellatum, (i) Rhynchomonas nasuta, (j) Salpingoeca marina, (k) Pendulomonas adriperis, (l) Neobodo saliens, (m) unidentified protist, (n) Neobodo designis, (o) Monosiga brevicollis, (p) Halocafeteria seosinensis, (q) Cantina marsupialis.

Fig. 3. (a) Ancyromonas sigmoides, (b) Caecitellus parvulus, (c) Cafeteria roenbergensis, (d) Cantina marsupialis, (e) Chelonemonas sp., (f) Codosiga botrytis, (g) Carpediemonas membranifera, (h) Neobodo curvifilus, (i) Neobodo designis, (j) Neobodo saliens, (k) unidentified protist, (l)-(m) Pleurostomum flabellatum, (n) Rhyncomonas nasuta, (o) Monosiga brevicollis, (p) Salpingoeca marina, (q) Pendulomonas adriperis, (r) Halocafeteria seosinensis. All micrographs are DIC images. Scale bar in (k) represents for all figures.