ID help please for green protist

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Bschnitzer
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ID help please for green protist

#1 Post by Bschnitzer » Thu Sep 22, 2022 3:12 am

Red eyespot usually points to Euglenoid, but I couldn't spot any flagella. Also, anterior end is rounded.

Thanks
0009 400x green flat protist small.jpg
0009 400x green flat protist small.jpg (31.24 KiB) Viewed 254 times

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WWWW
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Re: ID help please for green protist

#2 Post by WWWW » Thu Sep 22, 2022 6:33 am

I think it is a Euglena, the flagelum is not always visible.
There are many species some with som without pointed back.
There is als Lepocinclis whis resembles Euglene very much.

Bschnitzer
Posts: 32
Joined: Mon May 16, 2022 6:57 pm
Location: Northern Virginia

Re: ID help please for green protist

#3 Post by Bschnitzer » Thu Sep 22, 2022 12:21 pm

Thanks, 4w. I’m agreeing with you on likely Euglena species with fine or missing flagella and one extra large economy size chloroplast. Btw, it’s motion was not like euglena I have seen where the flagella is used to whip/pull the body along. Instead, it just did a slow motion writhing and stretching.

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WWWW
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Re: ID help please for green protist

#4 Post by WWWW » Thu Sep 22, 2022 3:39 pm

Yes sometimes they act like an amoeba.
The red eye spot, the nucleus and a paramylum-bar are visible. (I think)

Bschnitzer
Posts: 32
Joined: Mon May 16, 2022 6:57 pm
Location: Northern Virginia

Re: ID help please for green protist

#5 Post by Bschnitzer » Thu Sep 22, 2022 5:29 pm

Ah yes, thanks for the correction on paramylum bar.

Bschnitzer
Posts: 32
Joined: Mon May 16, 2022 6:57 pm
Location: Northern Virginia

Re: ID help please for green protist

#6 Post by Bschnitzer » Thu Sep 22, 2022 5:42 pm

Based only on species images on the internet, E. gracilis is the closest match I can find for now.

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