Pontin, R.M., 1978
Key to the British Freshwater Planktonic Rotifera
The main body of the work is the dichotomous keys: to genera (females), then for each genus: key to species (females). Each species has a short account giving habitat and season. Notes on non-planktonic and/or non-freshwater species are given at the end of each genus.
Finally, a key to genera (males) is given, but they are taken no further, although the entries for the females include notes on the males.
||Freshwater Biological Association (FBA)
||0 900386 33 9
||Covers all planktonic and semi-planktonic UK and Irish species known at the time.
||Line drawings accompany the text.
||Under a Compound Microscope.
||Alive, trapped under a coverslip (compressorium) or perhaps slowed down by cotton wool strands or Methyl Cellulose. Or narcotised (physostigmine salicylate, tricaine methane sulphonate or 1% formalin or alcohol). Narcotised animals may be preserved in 5% formalin or slide-mounted in polyvinyl lactophenol with lignin pink to show the jaws. To see the necessary characters, it's best to use multiple individuals rather than manipulation, but make sure they're all the same species!.