What's up with this Keratella rotifer?

Images made through a microscope. All subject types.

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Charles Krebs
Posts: 5865
Joined: Tue Aug 01, 2006 8:02 pm
Location: Issaquah, WA USA

What's up with this Keratella rotifer?

Post by Charles Krebs »

This rotifer is very common in my pond. I see it regularly and have posted shots of it before. My latest water sample has very large numbers present. About 1/2 of the ones I have observed in this sample are covered by these fine "hairlike" growths or attachments. Very bizarre looking, and something I have not seen before. They have no apparent structures or features, and no apparent motion... at least with the 20X and 40X. I'll try to get a better look with the 100X. The rotifers seem to be healthy... moving about and feeding actively (this one is dragging an egg behind it).

My first wild guess is a fungus of some sort.... don't know. Any thoughts?


Posts: 3578
Joined: Fri Aug 04, 2006 4:19 am
Location: Southern New Hampshire USA

Post by beetleman »

Execellent photo Charles. Are all those dots on the surface related to the hair-like growths? The surface textures on the creature are fantastic.
Take Nothing but Pictures--Leave Nothing but Footprints.
Doug Breda

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