the life history of Amphora arcus

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75RR
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the life history of Amphora arcus

#1 Post by 75RR » Tue Aug 20, 2019 7:45 pm

The systematics of amphoroid diatoms: the life history of Amphora arcus

https://www.researchgate.net/publicatio ... hora_arcus

this is the 8th page out of 19
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MicroBob
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Re: the life history of Amphora arcus

#2 Post by MicroBob » Tue Aug 20, 2019 9:04 pm

Hi Glen,
this looks as if the diatom would split in half next to duplicate (left and right) - do I understand this right?
Typical diatoms would split into top and bottom as seen in the microscope.

Bob

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Re: the life history of Amphora arcus

#3 Post by 75RR » Wed Aug 21, 2019 5:03 am

Yes, each half of the frustule, epitheca and hypotheca becomes a separate diatom.

The one formed by the epitheca remains the same size, while the one formed by the hypotheca is smaller.

Image
... this looks as if the diatom would split in half next to duplicate (left and right) - do I understand this right?
Typical diatoms would split into top and bottom as seen in the microscope.
have just reread your question and wonder if the way the drawings are arranged (vertically rather than horizontally) is confusing the matter.
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MicroBob
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Re: the life history of Amphora arcus

#4 Post by MicroBob » Wed Aug 21, 2019 5:53 am

Now I understand - the drawings show a side view of the diatoms. I hadn't seen the emerging new frustules.

Bob

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Re: the life history of Amphora arcus

#5 Post by 75RR » Wed Aug 21, 2019 6:03 am

Agree that a little more separation of the theca join in the drawings would have been helpful
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