Coleochaete algae with zoospores

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Chris Dee
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Joined: Mon Aug 12, 2019 1:02 pm

Coleochaete algae with zoospores

#1 Post by Chris Dee » Fri Apr 03, 2020 8:50 pm

For some time there's been spots of algae colonising one side of my critter tank. I scraped a sample to try and ID it and noticed this strangeness. I think this is a colony of Botryococcus braunii (please correct if I'm mistaken), but what I don't understand is what is going on it the cell at the centre, any ideas?
Edit: Identified as Coleochaete algae with zoospores.

Last edited by Chris Dee on Sat Apr 18, 2020 2:33 pm, edited 1 time in total.

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daruosha
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Location: Tehran, Iran

Re: Botryococcus braunii

#2 Post by daruosha » Fri Apr 03, 2020 10:13 pm

I cannot help you ID those wiggling microorganisms, but the footage is beautiful to watch :)
Daruosh.

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75RR
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Re: Botryococcus braunii

#3 Post by 75RR » Sat Apr 04, 2020 6:51 am

It does not (to my eyes) have the 'classic' look of Botryococcus braunii so I wouldn't have thought that is what it was. (As always happy to be corrected.)

The movement may well be zoospores: https://en.wikipedia.org/wiki/Zoospore

Image
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

Chris Dee
Posts: 216
Joined: Mon Aug 12, 2019 1:02 pm

Re: Botryococcus braunii

#4 Post by Chris Dee » Sat Apr 04, 2020 1:10 pm

Thanks for the zoospore suggestion 75RR, I had no idea they could move that fast until looking into it following your post. The sample is deformed but I agree it doesn't share the form of the example of Botryococcus braunii you posted. I need to get a better sample and study further, but it is looking like it may be Coleochaete after more searching: https://www.landcareresearch.co.nz/reso ... oleochaete

Daruosha, glad you enjoyed it.

Chris Dee
Posts: 216
Joined: Mon Aug 12, 2019 1:02 pm

Re: Coleochaete algae with zoospores

#5 Post by Chris Dee » Sat Apr 18, 2020 2:38 pm

A better shot of the Coleochaete algae thallus that I'm finding in the tank.
2020-04-18 14-44-53 (B,Radius8,Smoothing4).jpg
2020-04-18 14-44-53 (B,Radius8,Smoothing4).jpg (155.48 KiB) Viewed 2003 times

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