Greetings. I'm working on a project that looks at zebrafish feeding
behavior in relation to several environmental variables (such as
light, food availability, etc.). The assay I'd like to use involves
feeding Paramecia bursaria to baby fish, and looking for green spots
in their bellies. I've done this in the past and it works just fine.
Unfortunately, when I do it now, I can't see anything, and it appears
to me that the Parmecia are not very green (I can see food in the
bellies, but no green hue).
So I have two questions:
1. What can be done to make P. bursaria more green?
2. Can you suggest some other small colored non-sessile creature
the fish might eat.
Thanks very much for any help you can give me.
Professor of Biology
fsinger at radford.edu
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