Hi! We collected these microalgae in a river in Bukidnon, Philippines. The sample was then cultured in Bold’s basal medium. This image was taken under OIO with micrometer. Contrast and brightness are altered.
Hi,
1. Diatom,
2. Scenedesmus,
4,5,6,7- are Cells and autospores of Chlorococcum/ Chlorella, to confirm that, kindly put some live culture in water and wait for some time if the spores started running that is Chlorococcum, if it does not produce any motile spore even after 30 minutes then it is Chlorella sp...
most probably this will be Chlorococcum only..
Good luck...
Dear Lloyd,
No.2 could be Scenedesmus quadricauda
No. 5 could be Chlorella
Hi,
1. Diatom,
2. Scenedesmus,
4,5,6,7- are Cells and autospores of Chlorococcum/ Chlorella, to confirm that, kindly put some live culture in water and wait for some time if the spores started running that is Chlorococcum, if it does not produce any motile spore even after 30 minutes then it is Chlorella sp...
most probably this will be Chlorococcum only..
Good luck...
Dear Lloyd,
1. Bacillariophyta. May be Navicula
2. Scenedesmus acuminatus
3. The image is not clearly
4,5,6,7. May be Chlorella
Good luck
Hello,
Almost all the discoid microalgae in the image are Chlorococcum, either propagules or individual cells/assemblages (6 and 4, 5, 7 respectively). No. 2 is definitely Scenedesmus sp. (not S. quadricauda I'm afraid), No. 1 is either a diatom, either Navicula or Rhizosolenia, none of whose cell outlines are distinguishable in the picture. No. 3 probably is a spore since the arranged linearly along with the other spores after release from the parent cell boundary as a clearly discernible decrease in diameter can be observed. None of the cells possess a cupular chloroplast, hence I believe none are Chlorella. The cells at 10/11 o'clock position appear to be most likely Chlorococcum macrostignatum.
With regards,
Dr. Abhishek Mukherjee
Hi .. You can use the following references :
Desikachary, T.V., (1959). "Cyanophyta" Indian Council of Agricultural Research, New Delhi.
Fay, P. (1983). The blue-green. (Cyanophyta Cyanobacteria). The Institute of Biology. Edward Arnold.
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