Attheya

Attheya
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	Sar
Clade:	Stramenopiles
Phylum:	Ochrophyta
Clade:	Diatomeae
Class:	Bacillariophyceae
Order:	incertae sedis
Family:	Attheyaceae
Genus:	Attheya T. West
Species
See text

Attheya is a genus of small single celled diatoms. Some of these species were earlier regarded to belong to Chaetoceros , or to Gonioceros , the taxonomic status of some of these species are still debated. ^[1]

Description

They are distinguished morphologically from Chaetoceros by the structure of valve outgrowths or girdle bands. The girdle bands can only be seen with an electron microscope. ^[2] Resting spores are seldom observed. Vegetative cells tend to attach to different substrates, including other diatoms, ^[3] and are sometimes referred to as epiphytic. However, they are also observed to be planktonic.

Species

• Attheya arenicola C. Gardner & R. M. Crawford
• Attheya armata (T. West) R. M. Crawford
• Attheya decora T. West
• Attheya flexuosa var. enodulifer C. Gardner
• Attheya flexuosa C. Gardner
• Attheya gaussii (Heiden) R. M. Crawford
• Attheya lata Wooszynska
• Attheya longicornis R. M. Crawford & C. Gardner
• Attheya septentrionalis (Østrup) Crawford
• Attheya ussurensis Stonik, Orlova & Crawford
• Attheya zachariasii var. curvata P. Rivera
• Attheya zachariasii Brun

References

1. Crawford, R.M., Hinz, F. and Koschinski, P. 2000. The combination of Chaetoceros gaussii (Bacillariophyta) with Attheya. Phycologia 39(3):238-244.
2. Crawford, R. M., Gardner, C., Medlin, L. K. 1994. The genus Attheya. I. A description of four new taxa, and the transfer of Gonioceros septentrionalis and G. armatus. Diatom research. 9:27-51.
3. Tomas, C. R., Hasle G. R., Syvertsen, E. E., Steidinger, K. A., Tangen, K., Throndsen, J., Heimdal, B. R., (1997). Identifying Marine Phytoplankton, Academic Press.

Further reading

• Rampen, Sebasstian W.; Schouten, Stefan; Panoto, F. Elda; Brink, Maaike; Andersen, Robert A.; Muyzer, Gerard; Abbas, Ben; Damste, Jaap S. Sinninghe (April 2009). "Phylogenetic Position Of Attheya Longicornis and Attheya Septenrionalis (Bacillariophyta)". Journal of Phycology. 45 (2): 444–453. doi:10.1111/j.1529-8817.2009.00657.x. PMID   27033823. S2CID   205696434.
• Hansen, Espen; Huseby, Siv; Degerlund, Maria; Eriksen, Gunilla; Ingebrigsten, Richard; Eilertsen, Hans (November 2013). "Chemical Diversity as a Function of Temperature in Six Northern Diatom Species". Marine Drugs. 11 (11): 4232–4245. doi: 10.3390/md11114232 . PMC   3853725 . PMID   24177671.