Rotifers

I'm used to seeing Bdelloidea rotifers mostly, which are pretty motile, so hard to capture for very long, but I found this rotifer hanging out on some sediment. Not sure on the species, but the specimen did a good job of showing the current ...

See entire post

... results in the formation of spores: haploid cells that can divide vegetatively without undergoing fertilization. Some eukaryotes, like Bdelloid rotifers, have lost the ability to carry out meiosis and have acquired the ability to reproduce by parthenogenesis. Meiosis does not occur in archaea ...

See entire post

... Retractable proboscis surrounded by papillae 17 Rhombozoa Lozenge animal — Single axial cell surrounded by ciliated cells 75 Rotifera Wheel bearer Rotifers Anterior crown of cilia about 2000 Sipuncula Small tube Peanut worms Mouth surrounded by invertible tentacles 144–320 Tardigrada Slow step ...

See entire post

In my textbook, rotifers (and a few other pseudocoelomates) are described as being cell constant. This means each member of a given species has a specific number of cells. They do not divide. Division cannot be induced, and any form ...

See entire post

For bacteria or bdelloid rotifers, it is doubtless, for the rest, I seriously doubt it. But maybe you will prove us wrong with some interesting data to backup your original hypothesis. Parthenogenesis among reptiles and birds is fact ...

See entire post