Cyclostephanos dubius

From Black Sea Phytoplankton checklist

Cyclostephanos dubius (Fricke) Round in Theriot et al., 1988

= Cyclotella dubia Fricke in A. Schmidt, 1900; Stephanodiscus dubius (Fricke in A. Schmidt) Hustedt, 1928; Stephanodiscus pulcherrimus Cleve-Euler, 1910; (mentioned for the Black Sea)

Classification

Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Thalassiosirales (Order) > Stephanodiscaceae (Family) > Cyclostephanos (Genus)

WoRMS: 148996

First record for the Black Sea

The species was reported first time for the Black Sea :
year - 1960-77
found by - Bodeanu N.
reference - Bodeanu N., 1987-1988. Structure et dynamique d'algoflore unicellulaire dans les eaux du littoral roumain de la mer Noire. Recherches marines(20/21): 19 - 250.

Properties

Environment: marine; freshwater

Occurrence

	References
Black Sea
Bulgaria
Geogria
Romania	Petranu A., 1997; Boicenco L. Updated list from Bodeanu N., 1987-88; Bodeanu N., 1987-1988 (only RO littoral zone)
Russia
Turkey
Ukraine	Nesterova D.A., Terenko L.M., Terenko G.V., 2006 (NW)

Volume and surface area calculation

	Shape
Simple shape	cylinder
K(flattening factor)	1
More accurate shape	-

BS - если видна со створки k - 0.33
Hillebrand et al., 1999 - cylinder (Hillebrand, H., Dürselen, C. D., Kirschtel, D., Pollingher, D. and Zohary, T. (1999) Biovolume calculation for pelagic and benthic microalgae. J. Phycol., 35, 403–424)

Appearance in checklists

1886

1900

1950

2000

2010

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	33	34	35	36	38	49	54	55	56	57
			x ⁴																							x

58	63	67	68	72	73	74	75	77	78	84	85	86	87	88	89	92	93	94	99	100	101	102	103	105	108	109	110	116	117	118	119	120	123	125
																		x ⁹⁴

4 - as Stephanodiscus dubius; 94 - as Stephanodiscus dubius;

References

Bodeanu N., 1987-1988. Structure et dynamique d'algoflore unicellulaire dans les eaux du littoral roumain de la mer Noire. Recherches marines(20/21): 19 - 250.^*
* - as Stephanodiscus dubius

Boicenco L. Updated list from Bodeanu N., 1987-1988. Structure et dynamique de l'algoflore unicellulaire dans les eaux du littoral Roumain de la Mer Noire. Research Marines(20/21): 19-250.

Nesterova D.A., Terenko L.M., Terenko G.V., 2006. In: North-Western part of the Black Sea: biology and ecology, Naukova dumka, Kiev: 557-576.

Petranu_A.,_1997. Black Sea Biological Diversity, Romania. Black Sea Environmental Series, Vol. 4, United Nations Publication, New York, 315 pp.^*
* - as Stephanodiscus dubius

	List based on literature analysis
	List extracted from database
	List extracted from published paper, which is based on monitoring(scientific) research of scientist(s) and includes analysis of real collected data
	Personal list, based on monitoring(scientific research) of scientist (not published as article)
	Identification book

Last revision on 20-05-2013