Hi people!
The sampleI (FIXED WITH LUGOL) is from a temporary lagoon (only 9 cm depht) with high salinity
Conductivity: 172022 μS/cm
pH 6,86
dissov oxig: 2,49mg/l
I am asking about the Volvocales species, there are one bigger and brown colour, and a small green one.
Are they Chlamydomonas? Dunaliella salina??? What do you think??
Thanks in advance
hello Maria,
The bigger cells are looks like Chlamydomonas only.
with regards,
Perumal
Hello Maria,
I would look for Cryptomonads, at least for the larger cells.
Cheers,
Chrsitian
Dear Maria!
I think they are both Dunaliella species. It is possible that the same species (small cells are young individuals (zoospores) of bigger cells) or 2 different species, it is difficult question.
Best wishes
Tatiana
Definitely Dunaliella cells. The brown appearance is due to carotenoids. High salinity species have this characteristic.
Flagella are visible. I think these are Chlamydomonas cells. The brown coloured are old cells.
Almost sure both are Dunaliella. I would bet for Dunaliella parva (the small one) and (Dunaliella salina) the bigger
Given the characteristics of the sampling site and the images provided, I would venture to say that it is Dunaliella salina.
Dear Maria,
I agree with the identification that it is Dunaliella salina.
You may refer the book "Identifying marine phytoplankton" by Carmelo_R._Tomas, pp. 591-730.
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