''Attheya'' is a genus of small single celled
diatom
A diatom ( Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". is any member of a large group comprising se ...
s. Some of these species were earlier regarded to belong to ''
Chaetoceros
''Chaetoceros'' is probably the largest genus of marine planktonic diatoms with approximately 400 species described, although many of these descriptions are no longer valid. It is often very difficult to distinguish between different ''Chaeto ...
'', or to ''
Gonioceros'', the taxonomic status of some of these species are still debated.
[Crawford, R.M., Hinz, F. and Koschinski, P. 2000. The combination of ''Chaetoceros gaussii'' (Bacillariophyta) with ''Attheya''. Phycologia 39(3):238-244.]
Description
They are distinguished morphologically from ''
Chaetoceros
''Chaetoceros'' is probably the largest genus of marine planktonic diatoms with approximately 400 species described, although many of these descriptions are no longer valid. It is often very difficult to distinguish between different ''Chaeto ...
'' by the structure of valve outgrowths or girdle bands. The girdle bands can only be seen with an electron microscope.
[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.] Resting spores are seldom observed. Vegetative cells tend to attach to different substrates, including other diatoms,
[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.] and are sometimes referred to as
epiphytic. However, they are also observed to be
planktonic
Plankton are the diverse collection of organisms found in water (or air) that are unable to propel themselves against a current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a cruc ...
.
Species
*''
Attheya arenicola
''Attheya arenicola'' is a diatom in the genus ''Attheya
''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 t ...
'' C. Gardner & R. M. Crawford
*''
Attheya armata
''Attheya armata'' is a species of diatoms in the genus ''Attheya
''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 ...
'' (T. West) R. M. Crawford
*''
Attheya decora
''Attheya decora'' is a species of diatoms in the genus ''Attheya''. Type material was collected from Cresswell sands, Northumberland
Northumberland () is a county in Northern England, one of two counties in England which border with Scot ...
'' T. West
*''
Attheya flexuosa var. enodulifer'' C. Gardner
*''
Attheya flexuosa
''Attheya flexuosa'' is a species of diatoms in the genus ''Attheya
''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 o ...
'' C. Gardner
*''
Attheya gaussii
''Attheya gaussii'' is a species of diatoms in the genus ''Attheya
''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 ...
'' (Heiden) R. M. Crawford
*''
Attheya lata
''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.Crawford, R.M., Hinz, F. and K ...
'' Wooszynska
*''
Attheya longicornis
''Attheya longicornis'' is a species of diatoms in the genus ''Attheya
''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 statu ...
'' R. M. Crawford & C. Gardner
*''
Attheya septentrionalis
''Attheya septentrionalis'' is a species of diatoms in the genus ''Attheya
''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 s ...
'' (Østrup) Crawford
*''
Attheya ussurensis
''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.Crawford, R.M., Hinz, F. and K ...
'' Stonik, Orlova & Crawford
*''
Attheya zachariasii var. curvata'' P. Rivera
*''
Attheya zachariasii
''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.Crawford, R.M., Hinz, F. and K ...
'' Brun
References
Further reading
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External links
{{Taxonbar, from=Q4034555
Coscinodiscophyceae genera