Synura tiksiensis Bessudova, Gabyshev, and Likhoshway 2022
- Dataset
- Record of two rare taxa from Synura genus (Chrysophyceae) with a description of a new species (Synura tiksiensis sp. nov.) near the arctic settlement of Tiksi, Yakutia, Russia
- Rank
- SPECIES
- Published in
- Bessudova, Anna, Gabyshev, Viktor, Likhoshway, Yelena V. (2022): Record of two rare taxa from Synura genus (Chrysophyceae) with a description of a new species (Synura tiksiensis sp. nov.) near the arctic settlement of Tiksi, Yakutia, Russia. Phytotaxa 560 (2): 247-253, DOI: 10.11646/phytotaxa.560.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.560.2.8
Classification
- kingdom
- Chromista
- phylum
- Ochrophyta
- class
- Chrysophyceae
- order
- Synurales
- family
- Mallomonadaceae
- genus
- Synura
- species
- Synura tiksiensis
description
Description: Shape and dimensions of the colonies are unknown. Body scales are oval, 2.9 – 3.25 µm long and 1.8 – 2.0 µm wide. The keel is cylindrical, 0.5 – 0.66 µm wide, has a acute or rounded tip ornamented by medium (66 - 100 nm in diameter) and large pores (120 - 170 nm in diameter) (Figs. 7, 9). The foramen pore on the base plate is circular and large, 0.36 – 0.7 µm in diameter. Numerous tiny pores ornament the basal plate. The rounded struts reach the proximal rim of the scale. In some parts, they are connected by a parallel rib (Figs. 10 – 14). The posterior rim is narrow, 0.16 – 0.19 µm wide, and encircles about half of the perimeter of the scale. Apical scales are 2.9 – 3.4 µm long and 1.8 – 2.3 µm wide (Figs. 10 – 14). The keel of the apical scales has a prominent, acute tip. Rear scales are 3.2 – 3.8 µm long and 1.2 – 1.5 µm wide (Figs. 6, 7). Stomatocysts are unknown.
distribution
Distribution: — Scales were found in sites 1, 2, 3, 4, 5 and 6, at pH = 7.22 – 7.51, T = 14.6 – 16.7 ° C (see Table 1).
etymology
Etymology: — The species was named after the city near which it was discovered.
materials_examined
Type: — Portion of a single gathering of scales on SEM stub No. 17852 (here designated, Figure 6 – 14) was deposited at the Herbarium of the Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk. Type locality: — boggy tundra, station is located on the northern slope of the Primorsky Ridge, Republic of Yakutia, Russia. Latitude / Longitude: N 71 ° 33 ’ 35.68 ”, E 128 ° 40 ’ 25.51 ”.