The flagellate Mallomonas

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tlansing
Posts: 336
Joined: Sat Aug 01, 2020 3:15 pm

The flagellate Mallomonas

#1 Post by tlansing » Wed Jan 12, 2022 4:18 pm

Here are a couple of photos of the unicellular alga Mallomonas (the photos are of two different cells taken at different times and may be different species). These are very distinctive algal cells which are characterized by the long spines and silica scales which surround the cell body. The spines are most visible in the first photo and the scales in the second. You can also see the one of the flagella in the first photo (to the left of the cell body). This alga is a brownish color due to the pigments found in the chloroplast.

Objective 40x plan achromat, DIC
Mallomonas-1.jpg
Mallomonas-1.jpg (76.7 KiB) Viewed 1442 times
Mallomonas-2.jpg
Mallomonas-2.jpg (69.59 KiB) Viewed 1442 times

DonSchaeffer
Posts: 3275
Joined: Sun Mar 22, 2020 10:06 am
Location: Winnipeg, Manitoba, Canada

Re: The flagellate Mallomonas

#2 Post by DonSchaeffer » Wed Jan 12, 2022 7:01 pm

I think I'm seeing similar flagellates but I can't take such great photos. What lens did you use?

tlansing
Posts: 336
Joined: Sat Aug 01, 2020 3:15 pm

Re: The flagellate Mallomonas

#3 Post by tlansing » Wed Jan 12, 2022 9:01 pm

Hi Don, glad you liked the photos. I used a 40x plan achromat (Zeiss). The microscope is a Photomicroscope III equipped with the original Zeiss DIC setup (prisms in the condenser and a analyzer/combiner in the tube head above the objectives).

Tim


DonSchaeffer
Posts: 3275
Joined: Sun Mar 22, 2020 10:06 am
Location: Winnipeg, Manitoba, Canada

Re: The flagellate Mallomonas

#5 Post by DonSchaeffer » Thu Jan 13, 2022 12:45 am

Beautiful images. I always use a 60X plan objective. Those are pretty big flagellates. The ones I see are very small.

tlansing
Posts: 336
Joined: Sat Aug 01, 2020 3:15 pm

Re: The flagellate Mallomonas

#6 Post by tlansing » Thu Jan 13, 2022 10:27 am

Thanks, Jochen.

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