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 Post subject: Foraminifera
PostPosted: Fri May 17, 2019 5:04 pm 
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Joined: Sun Oct 12, 2014 2:34 am
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Location: Estepona
Note slender axopodia and kinetocysts in second part.


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 Post subject: Re: Foraminifera
PostPosted: Fri May 17, 2019 6:22 pm 
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Amazing view. I am trying to correlate the live creature with its test. Does it consist of a brown spiral frontal part and a mesh-like, larger back part ?

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 Post subject: Re: Foraminifera
PostPosted: Fri May 17, 2019 6:28 pm 
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Location: Estepona
Perhaps this stacked image of it might help.


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Forminifera.jpg
Forminifera.jpg [ 250.04 KiB | Viewed 243 times ]

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 Post subject: Re: Foraminifera
PostPosted: Fri May 17, 2019 6:39 pm 
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Thanks, yes, this is a clearer presentation!

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 Post subject: Re: Foraminifera
PostPosted: Sat May 18, 2019 2:57 am 
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Joined: Tue Jun 09, 2015 12:08 am
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Location: League City, Texas
Very Cool -- is that a living foram I see??

Foraminiferae have their similarities to the diatoms: both create tiny "seashells", and most illustrations show only the shell and rather make a mystery of the organisms that live(d) in them. Forams are amoeboid creatures, but make shells that really bring chambered nautilus type animals to mind, wonder why?

How was this specimen collected?

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 Post subject: Re: Foraminifera
PostPosted: Sat May 18, 2019 4:35 am 
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Location: Estepona
Thanks KurtM, yes live. Not my first live one but the first time I manage to see and photograph/video an inhabitant's axopedia.

Sample consists of small rocks with algae attached which I picked up at low tide.

Most probably washed in from deeper water but not too deep, sea is shallow for a fair way on this part of the coast. So benthic rather than planktonic.


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sample.jpg
sample.jpg [ 110.55 KiB | Viewed 197 times ]

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Last edited by 75RR on Sat May 18, 2019 4:59 am, edited 1 time in total.
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 Post subject: Re: Foraminifera
PostPosted: Sat May 18, 2019 4:51 am 
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For anyone wondering what I meant by non dedicated DIC Slider (on the video description), it means that I used a DIC slider that was not intended for the objective.

DIC systems vary a lot. In the one I have each DIC slider has printed on it the specific objective it is designed to work with.

Having more objectives than sliders has led to a little experimentation. Results tend to vary, ranging from very good to not at all.

On this occasion I used a Plan 40x/0.65 slider with a Neofluar 25x/60 objective.

Here is a link to a thread on photomacrography.net by Cactusdave that documents the results he obtained.

https://www.photomacrography.net/forum/ ... hp?t=31435


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sliders.jpg
sliders.jpg [ 95.29 KiB | Viewed 196 times ]

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