Papposphaera sagittifera HET ...
P. sagittifera HET (Figs 4–16) The Arctic material from West Greenland (Fig. 7), North East Water Polynya (Figs 4–5, 13) and Svalbard (Figs 6, 8–12, 14–16) basically confirms what is already known about P. sagittifera HET from this region (Thomsen 1981). The rationale behind illustrating three compl...
| Main Authors: | , , |
|---|---|
| Format: | Text |
| Language: | unknown |
| Published: |
Zenodo
2016
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.5281/zenodo.12534972 https://zenodo.org/doi/10.5281/zenodo.12534972 |
| Summary: | P. sagittifera HET (Figs 4–16) The Arctic material from West Greenland (Fig. 7), North East Water Polynya (Figs 4–5, 13) and Svalbard (Figs 6, 8–12, 14–16) basically confirms what is already known about P. sagittifera HET from this region (Thomsen 1981). The rationale behind illustrating three complete cells from TEM is to document the consistent presence of flagellation. The flagella and the haptonema typically curl up densely which renders measurements of these structures impossible. A haptonema is visible in e.g. Fig. 4 (arrow) where it is differentiated from the flagella by being significantly thinner. The apparent absence of flagellation in the numerous SEM illustrations of complete cells (Figs 10–12, 14) is bound to be an artefact somehow caused by the manipulation of the cells during filtration and subsequent drying. All complete cells illustrated from SEM clearly display organisms that have the typical cell polarity to be expected from a flagellated individual. Dimensional issues across the different ... : Published as part of Thomsen, Helge A., Østergaard, Jette B. & Heldal, Mikal, 2016, Coccolithophores in Polar Waters: HOL Revisited Papposphaera sagittifera HET and, pp. 33-50 in Acta Protozoologica 55 (1) on pages 36-38, DOI: 10.4467/16890027AP.16.005.4046, http://zenodo.org/record/10994318 ... |
|---|