Cystoseira

Cystoseira
	Cystoseira foeniculacea, the type species of Cystoseira
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	SAR
Clade:	Stramenopiles
Phylum:	Gyrista
Subphylum:	Ochrophytina
Class:	Phaeophyceae
Order:	Fucales
Family:	Sargassaceae
Genus:	Cystoseira; (L.) C.Agardh, 1820
Species
	See text

Cystoseira is a genus of brown algae in the order Fucales.

Description

As presently defined, Cystoseira comprises fucoids characterised by antherozoids without stigmata, few antheridial branches, trichothallic hairs in conceptacles, large ovoid oospheres, and eggs that remain attached to the surface of the receptacles through mucilaginous stalks until after fertilization.^[2]

Distribution

Cystoseira as presently defined occurs only in the Mediterranean and Northeast Atlantic. Species from the Indian and Pacific oceans are presently included in different genera.^[2]

Ecology

Cystoseira are important habitat-forming species in coastal waters of the Mediterranean and Northeast Atlantic. They require good water quality, and can be used as bioindicators for pollution levels.^[3]

Species

Cystoseira was recently found to include multiple unrelated lineages.^[4]^[2]^[5] As a result, most species were moved to the genera Stephanocystis, Polycladia, Sirophysalis, Gongolaria and Ericaria.^[2]^[5]^[6] As of January 2024, AlgaeBase lists the following non-fossil species as accepted:^[7]

Cystoseira aurantia Kützing, 1843
Cystoseira compressa (Esper) Gerloff & Nizamuddin, 1975
Cystoseira crinitophylla Ercegovic, 1952
Cystoseira flaccida Kützing 1843
Cystoseira foeniculacea (Linnaeus) Greville, 1830
Cystoseira humilis Schousboe ex Kützing, 1860
Cystoseira hypocarpa Kützing 1854
Cystoseira melanothrix (Kützing) Piccone, 1884
Cystoseira micheleae Verlaque, Blanfuné, Boudouresque, Thibaut & Sellam, 2017
Cystoseira pelagosae Ercegovic, 1952
Cystoseira pustulata (Ercegovic) Neiva & Serrão, 2022
Cystoseira pycnoclada Schiffner ex Gerloff & Nizamuddin, 1976
Cystoseira schiffneri G.Hamel, 1939
Cystoseira selaginoides Naccari 1828
Cystoseira spicata Ercegovic 1952
Cystoseira spicigera C.Agardh 1820
Cystoseira thysigera Postels & Ruprecht 1840
Cystoseira tophosa Filarszky 1926
Cystoseira wildpretii Nizamuddin 1995

Many of these species are poorly studied and require validation.^[5]

References

^ Cystoseira C. Agardh, 1820 World Register of Marine Species. Retrieved 2011-09-18.
^ ^a ^b ^c ^d Draisma, S.G.A.; Ballesteros, E.; Rousseau, F.; Thibaut, T. (2010). "DNA sequence data demonstrate the polyphyly of the genus Cystoseira and other Sargassaceae genera (Phaeophyceae)". J. Phycol. 46: 1329–1345. doi:10.1111/j.1529-8817.2010.00891.x.
^ Sales, M.; Ballesteros, E. (2009). "Shallow Cystoseira (Fucales: Ochrophyta) assemblages thriving in sheltered areas from Menorca (NW Mediterranean): Relationships with environmental factors and anthropogenic pressures". Estuarine, Coastal and Shelf Science. 84 (4): 476–482. doi:10.1016/j.ecss.2009.07.013.
^ Orellana, S.; Hernández, M.; Sansón, M. (2019). "Diversity of Cystoseira sensu lato (Fucales, Phaeophyceae) in the eastern Atlantic and Mediterranean based on morphological and DNA evidence, including Carpodesmia gen. emend. and Treptacantha gen. emend". European Journal of Phycology. 54 (3): 447–465. doi:10.1080/09670262.2019.1590862.
^ ^a ^b ^c Neiva, J.M.; Bermejo, R.; Medrano, A.; Capdevila, P.; Milla-Figueras, D.; Afonso, P.; Ballesteros, E.; Sabour, B.; Serio, D.; Nóbrega, E.; Soares, J.; Valdazo, J.; Tuya, F.; Mulas, M.; Israel, A.; Sadogurska, S.S.; Guiry, M.D.; Pearson, G.A.; Serrão, E.A. (2023). "DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeographical insights in Cystoseira s.l. (Phaeophyceae)". European Journal of Phycology. 58 (3): 351–375. doi:10.1080/09670262.2022.2126894. hdl:10261/283058.
^ Molinari Novoa, E.A.; Guiry, M.D. (2020). "Reinstatement of the genera Gongolaria Boehmer and Ericaria Stackhouse (Sargassaceae, Phaeophyceae)" (PDF). Notulae Algarum. 172: 1–10. Retrieved 13 January 2024.
^ Molinari Novoa, E.A.; Guiry, M.D.; Guiry, G.M. "Gongolaria Boehmer, 1760". AlgaeBase. Retrieved 13 January 2024.

[WoRMS-1] Cystoseira C. Agardh, 1820 World Register of Marine Species. Retrieved 2011-09-18.

[draisma-2] Draisma, S.G.A.; Ballesteros, E.; Rousseau, F.; Thibaut, T. (2010). "DNA sequence data demonstrate the polyphyly of the genus Cystoseira and other Sargassaceae genera (Phaeophyceae)". J. Phycol. 46: 1329–1345. doi:10.1111/j.1529-8817.2010.00891.x.

[3] Sales, M.; Ballesteros, E. (2009). "Shallow Cystoseira (Fucales: Ochrophyta) assemblages thriving in sheltered areas from Menorca (NW Mediterranean): Relationships with environmental factors and anthropogenic pressures". Estuarine, Coastal and Shelf Science. 84 (4): 476–482. doi:10.1016/j.ecss.2009.07.013.

[orellana-4] Orellana, S.; Hernández, M.; Sansón, M. (2019). "Diversity of Cystoseira sensu lato (Fucales, Phaeophyceae) in the eastern Atlantic and Mediterranean based on morphological and DNA evidence, including Carpodesmia gen. emend. and Treptacantha gen. emend". European Journal of Phycology. 54 (3): 447–465. doi:10.1080/09670262.2019.1590862.

[neiva-5] Neiva, J.M.; Bermejo, R.; Medrano, A.; Capdevila, P.; Milla-Figueras, D.; Afonso, P.; Ballesteros, E.; Sabour, B.; Serio, D.; Nóbrega, E.; Soares, J.; Valdazo, J.; Tuya, F.; Mulas, M.; Israel, A.; Sadogurska, S.S.; Guiry, M.D.; Pearson, G.A.; Serrão, E.A. (2023). "DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeographical insights in Cystoseira s.l. (Phaeophyceae)". European Journal of Phycology. 58 (3): 351–375. doi:10.1080/09670262.2022.2126894. hdl:10261/283058.

[6] Molinari Novoa, E.A.; Guiry, M.D. (2020). "Reinstatement of the genera Gongolaria Boehmer and Ericaria Stackhouse (Sargassaceae, Phaeophyceae)" (PDF). Notulae Algarum. 172: 1–10. Retrieved 13 January 2024.

[algaebase-7] Molinari Novoa, E.A.; Guiry, M.D.; Guiry, G.M. "Gongolaria Boehmer, 1760". AlgaeBase. Retrieved 13 January 2024.

[1]

[2]

[3]

[4]

[5]

[6]

[7]