Diploneis
(Ehrenberg) Cleve 1894 Category: Symmetrical biraphid
TYPE SPECIES: Diploneis didyma (Ehrenberg) Cleve
Image Credit: Ditmar Metzeltin
CLASS: Bacillariophyceae
ORDER: Naviculales
FAMILY:
- Valves elliptical to panduriform
- Longitudinal canals present
- Areolae complex
Frustules of Diploneis are typically elliptical to panduriform, with bluntly rounded apices. Each valve possesses two longitudinal canals, one on each side of the raphe. The canals are positioned within the silica cell wall and open to the exterior through pores, but lack openings to the interior of the cell. The function of these canals is uncertain. The frustules are heavily silicified, with complex (loculate) areolae.
The genus Diploneis is large and diverse. Species are primarily from epipelic, marine habitats. There are a few freshwater representatives.
Cite This Page:
Spaulding, S., and Metzeltin, D. (2011). Diploneis. In Diatoms of the United States. Retrieved May 19, 2013, from http://westerndiatoms.colorado.edu/taxa/genus/diploneis
Contributor: Sarah Spaulding | Ditmar Metzeltin - February 2011
Citations
Cleve, P.T. (1894). Synopsis of the Naviculoid Diatoms, Part I. Kongliga Svenska-Vetenskaps Akademiens Handlingar 26(2):1-194, 5 pls.
Droop, S.I.M. (1996). The identity of Diploneis splendida (Bacillariophyta) and some related species. Phycologia 35: (5). 404-420. 10.2216/i0031-8884-35-5-404.1
Droop, S.J.M., Mann, D.G. and Lokhorst, G.M. (2000). Spatial and temporal stability of demes in Diploneis smithii/D. fusca (Bacillariophyta) supports a narrow species concept. Phycologia 39 (6): 527-546 . 10.2216/i0031-8884-39-6-527.1
Idei, M. and Kobayasi, H. (1989). The fine structure of Diploneis finnica with special reference to the marginal openings. Diatom Research 4 (1): 25-37.
Lange, C.B. and Tiffany, M.A. (2002). The diatom flora of the Salton Sea, California. Hydrobiologia 473: (1-3) 179-201. 10.1023/A:1016550205461
Stoermer, E.F. (1978). Diatoms from the Great Lakes. I. Rare or poorly known species of the genera Diploneis, Oestrupia and Stauroneis. Journal of Great Lakes Research 4 (2): 170-177 . 10.1016/S0380-1330(78)72181-7