Geissleria frolikhiensis Kulikovskiy, Gusev, Andreeva & Annenkova 2014, sp. nov.
- 1. Limnological Institute Siberian Division, Russian Academy of Sciences, Ulan-Batorskaya 3, RUS- 664033, Irkutsk, Russia & Aquatic Ecology, Department of Biology, Lund University, Ecology Building, 22362 Lund, Sweden
Description
LM, live cells (Figs 36–39): The single, large chloroplast is divided into two plates lying one against each valve, connected by a broad column.
LM (Figs 20–35): Valves elliptical to linear-elliptical with ends obtusely rounded. Length 8.0–9.5 µm, breadth 5 µm. Raphe filiform.Axial area very narrow, linear. Central area small. Isolated pore lacking. Striae radiate throughout, 18–20 in 10 µm.
SEM, external view (Fig. 40): The raphe slit is straight with visible sternum. Isolated pore absent. Central raphe ends straight. Terminal raphe ends deflected towards the secondary side of the valve and continue onto mantle. Striae uniseriate or irregularly biseriate near axial area. Annulus structure is not recognizable with striae similar to ones of striae. Areolae present as short slits, 70 in 10 µm of stria length.
SEM, internal view (Figs 41, 42): Raphe slit lying in internal sternum. Central raphe endings straight, terminal ends terminate in evident helictoglossae. Elongated subpolar areolae (about 4, two of which are striae) with warty outgrowths. Internally no hymens or occlusions are observed on the areolae.
Type: — RUSSIA: Lake Frolikha, N 55027.005 E 109058.649, 26.07.2012, leg. M. Kulikovskiy (IBIW slide no. 80/ B369, holotype designated here (= Fig. 20)), COLO slide 80/B369p is isotype.
Etymology: —Epithet refers to the type locality.
Observations: This species is similar to Geissleria acceptata (Hustedt) Lange-Bertalot & Metzeltin (1996: 64) but differs by rather large valves and more elliptical valves (not linear-elliptical). G. acceptata possesses an isolated pore, a structure that is absent in G. frolikhiensis sp. nov. (Novais et al. 2013). Other similar species are absent from Europe or elsewhere (see Lange-Bertalot 2001, Novais et al. 2013). G. irregularis Kulikovskiy, Lange-Bertalot & Metzeltin (2012: 117) from Lake Baikal differs by asymmetrical valves to the apical axis, central area. No similar species are known from Lake Baikal.
Notes
Files
Files
(2.6 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:0e40683a0ccf4f05caebf040ff6a3bcd
|
2.6 kB | Download |
System files
(18.2 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:3b87fb8d4e07d880ed69323b6d67f5c7
|
18.2 kB | Download |
Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- IBIW, COLO
- Event date
- 2012-07-26
- Family
- Naviculaceae
- Genus
- Geissleria
- Kingdom
- Chromista
- Order
- Naviculales
- Phylum
- Ochrophyta
- Scientific name authorship
- Kulikovskiy, Gusev, Andreeva & Annenkova
- Species
- frolikhiensis
- Taxonomic status
- sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2012-07-26
- Taxonomic concept label
- Geissleria frolikhiensis Kulikovskiy, Gusev, Andreeva & Annenkova, 2014
References
- Lange-Bertalot, H. & Metzeltin, D. (1996) Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types, Carbonate buffered - Oligodystrophic - Weakly buffered soft water. Iconographia Diatomologica 2: 1 - 390.
- Novais, M. H., Wetzel, C. E., Van de Vijver, B., Morais, M. M., Hoffmann, L. & Ector L. (2013) New species and combinations in the genus Geissleria (Bacilllariophyceae). Cryptogamie, Algologie 34 (2): 117 - 148. http: // dx. doi. org / 10.7872 / crya. v 34. iss 2.2013.117
- Lange-Bertalot, H. (2001) Navicula sensu stricto. 10 genera separated from Navicula sensu lato, Frustulia. Diatom of Europe 2: 1 - 526.
- Kulikovskiy, M. S., Lange-Bertalot, H., Metzeltin, D. & Witkowski, A. (2012 a) Lake Baikal: hotspot of endemic diatoms I. Iconographia Diatomologica, V. 23, A. R. G. Gantner Verlag K. G., pp. 7 - 608.