Any one know this (perhaps a Paulinella??)?

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Abinandan Sudharsanam

Dear maria

Please find below a file and link. May be of useful. Further, you can also try Standard Methods for the Examination of Water and Wastewater-APHA Book which has some images of algal species in the last few pages.

http://www.algalweb.net/search1.htm

Cheers

Abinandan

Syed Abbas Jafar

Abinandan:

What alga do you think it is? Would you kindly identify using link and the file cited by you?

Best

Syed

Maria Verdugo Althöfer

My samples are always fixed. They belongs to the photic zone of reservoirs and they are for finding the ecological status of the water. (i am only interesting in phytoplancton: biovolum, density, % cyano and algae groups)

In this case because my "problematic organism" is big, means a big biovolum that i need to count (if is an algae) if no,i dont need.

If it was an algae i would thinking in , perhaps, crisophyceae.

Thank you

Maria

Maria:

You need to follow the advice of Lotfi to observe live cells and identify your specimens as definite Alga and nothing else.

Dear Lotfi and Syed, i Know.

I took a nest living sample of the water colum, but there i had'nt find those organims ( I saw Mallomonas, and i was thinking in this possibility, but i am not sure)

Thanks for your sugestions

The shape, size and sculpture of the wall does show affinity with the tests of Thecamoeba (?Paulinella), except for the green colored endosymbiotic inclusion bodies resembling blue-green algal cells. Scanning electron microscopy would perhaps help.