Attheya is a genus of small single celled . 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 Koschinski, P. 2000. The combination of Chaetoceros gaussii (Bacillariophyta) with Attheya. Phycologia 39(3):238-244.]
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.
[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.
Species
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Attheya arenicola C. Gardner & R. M. Crawford
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Attheya armata (T. West) R. M. Crawford
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Attheya decora T. West
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Attheya flexuosa var. enodulifer C. Gardner
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Attheya flexuosa C. Gardner
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Attheya gaussii (Heiden) R. M. Crawford
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Attheya lata Wooszynska
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Attheya longicornis R. M. Crawford & C. Gardner
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Attheya septentrionalis (Østrup) Crawford
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Attheya ussurensis Stonik, Orlova & Crawford
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Attheya zachariasii var. curvata P. Rivera
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Attheya zachariasii Brun
Further reading
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