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Cystoseira

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Cystoseira
Cystoseira foeniculacea, the type species of Cystoseira
Scientific classification Edit this 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 [1]
Species

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

Description

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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

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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

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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

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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]

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

References

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Wikimedia Commons has media related to Cystoseira.
  1. ^ Cystoseira C. Agardh, 1820 World Register of Marine Species. Retrieved 2011-09-18.
  2. ^ 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.
  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.
  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.
  5. ^ 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.
  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.
  7. ^ Molinari Novoa, E.A.; Guiry, M.D.; Guiry, G.M. "Gongolaria Boehmer, 1760". AlgaeBase. Retrieved 13 January 2024.


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