A DINOFLAGELLATE CYST FROM ANTARCTIC SEA ICE 1
ABSTRACT The small (< 15 μm) hypnozygote of an autotrophic athecate dinofiagellate found in association with Antarctic sea ice had an external covering composed of approximately 60 plates, each of which was bounded by sutural ridging and possessed an intratabular process. A cingulum and sulcus we...
| Published in: | Journal of Phycology |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1992
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.0022-3646.1992.00015.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-3646.1992.00015.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-3646.1992.00015.x |
| Summary: | ABSTRACT The small (< 15 μm) hypnozygote of an autotrophic athecate dinofiagellate found in association with Antarctic sea ice had an external covering composed of approximately 60 plates, each of which was bounded by sutural ridging and possessed an intratabular process. A cingulum and sulcus were also evident. The ultrastructure of the cyst was increasingly dominated by storage bodies as the cyst matured, and the cell wall thickened from 0.2 to 0.8 μm over 2 months. This cyst has been encountered often but usually at low abundances (10 3 −10 4 cells·L −1 ); however, the maximum abundances observed (10 6 cells·L −1 ) indicate that the formation of this cyst may play an important part in the ecology of sea ice communities. |
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