More from the pond - Rotifer?
More from the pond - Rotifer?
Hi Guys... I spotted this guy last night from my pond sample. No idea what it is, its about 100 um from end to end. Any ideas?
I set up a web server to host my vids, let me know if its working.
http://office.shivs.org:5080/1.mp4
I set up a web server to host my vids, let me know if its working.
http://office.shivs.org:5080/1.mp4
Re: More from the pond - Rotifer?
Video is working fine.
In order for me to identify her I need to see her beak (mastax and trophi) which is halfway down her throat, looks like a diatom, and is often moving. I find it tough to get a good look and I always need to use the 40x or 60x objective and a coverslip to accomplish it. I am lousy at identifying stuff, but I still try.
I say beak because rotifers branched from cephalopods (octopus, squid,...) 680 million years ago and they have a lot in common. Its not actually called that.
In order for me to identify her I need to see her beak (mastax and trophi) which is halfway down her throat, looks like a diatom, and is often moving. I find it tough to get a good look and I always need to use the 40x or 60x objective and a coverslip to accomplish it. I am lousy at identifying stuff, but I still try.
I say beak because rotifers branched from cephalopods (octopus, squid,...) 680 million years ago and they have a lot in common. Its not actually called that.
Re: More from the pond - Rotifer?
But, it is some sort of rotifer? thats good enough for me
Re: More from the pond - Rotifer?
I am going with yes, that sure looks like a rotifer to me.
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Re: More from the pond - Rotifer?
There's nothing wrong with just leaving it at rotifer if you're happy with that...but know there are a lot of types that are easy enough to recognize at a glance. This one is a Monommata, as shown by its long mismatched toes.
Whether rotifers and cephalopods have a lot in common is I guess a matter of taste. They don't share much that they don't also share with a whole lot of other groups.
Whether rotifers and cephalopods have a lot in common is I guess a matter of taste. They don't share much that they don't also share with a whole lot of other groups.
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Re: More from the pond - Rotifer?
Rotifers move with a push-pull motion. They don't glide smoothly like that. They also move a lot of water using the cilia around the mouth. Neither of these behaviors are shown by that ciliate.
Re: More from the pond - Rotifer?
https://www.youtube.com/watch?v=PlMLfCKx29A
I have some of these. When they arent under a coverslip, they glide around like that, then when they feel like it, they stick that toe to the substrate, do kind of a handstand and slurp up bacteria. Not all of them move around like caterpillars. I mighf be wrong, but I dont think so, having followed it up some.
Cephalopods can glide or walk, whatever they want. Only makes sense to me that rotifers could too.
Actually tough to find a good video of an uncoverslipped rotifer.
https://www.youtube.com/watch?v=Ew4ryjxXHNk
Heres a coverslipped one gliding around a bit at 100x.
I have some of these. When they arent under a coverslip, they glide around like that, then when they feel like it, they stick that toe to the substrate, do kind of a handstand and slurp up bacteria. Not all of them move around like caterpillars. I mighf be wrong, but I dont think so, having followed it up some.
Cephalopods can glide or walk, whatever they want. Only makes sense to me that rotifers could too.
Actually tough to find a good video of an uncoverslipped rotifer.
https://www.youtube.com/watch?v=Ew4ryjxXHNk
Heres a coverslipped one gliding around a bit at 100x.
Re: More from the pond - Rotifer?
Last edited by juankax on Tue Apr 13, 2021 4:27 pm, edited 1 time in total.
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Re: More from the pond - Rotifer?
Some do. Many don't. It's an astoundingly diverse group!
Actinophrys (Josh Grosse) identified this critter as Monomatta and you can trust him on that. Here's another video showing the same critter: https://www.youtube.com/watch?v=qcBA1F15wdg