In the video we see a circular diatom of salt water.
We first see an living exemplary. Then we see its empty 'home' (frustule).
The frustula has a fine carved that refracts light in dark field.
We assume that belongs to the genus Coscinodiscus.
Measures about 120um in diameter and was found on the shores of the Atlantic ocean - La Paloma - Uruguay - South America.
We appreciate any help in their identification
Oblique light and dark field
Link:
http://www.youtube.com/watch?v=vnQqhRyexfY
Regards
carlos
Help ID, round salt water diatom, likely Coscinodiscus
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- carlos.uruguay
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- Location: Uruguay - Montevideo - America del Sur
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- carlos.uruguay
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Yes, C. concinnus is very finely structured. Nevertheless, I just saw it is quite small for C. concinnus, and the center could fit, but is atypical. In retrospect, Hyalodiscus might fit better. But I haven´t come across them much, and certainly not alive, so I wouldn´t know whether the chloroplast shape fits with your spec. For sure Podosira (very much related to Hyalodiascus) has way different chloroplasts. So, please don't take my word for it.
Best wishes, René
Best wishes, René
- carlos.uruguay
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Thank you again René
The weft is very similar to that of these beautiful photos yours:
http://www.photomacrography.net/forum/v ... d946e98d1f
carlos
The weft is very similar to that of these beautiful photos yours:
http://www.photomacrography.net/forum/v ... d946e98d1f
carlos