Thursday, May 15, 2008
Fruit fly culture experiment
I'm growing flightless fruit flies to feed my pet plants. About a month ago I bought a culture of them from a pet store for $5.99 - I believe today I bought enough ingredients to make dozens of times more flies for about the same price. First, here is the store purchased culture.
Because millions of people without in-sink disposals unwittingly make fruit fly cultures every day I figure it's rather difficult to fail in the venture. I've read that using vinegar instead of water inhibits mold growth so I threw into the blender a small apple, half a package of potato buds, half a package of baking yeast and wet it down a bit with apple cider vinegar.
I kept the apple peels for springtail food. Or more accurately, food for springtail food. More on that tomorrow.
After blending everything down to a cookie dough consistency, I used a root beer bottle to mash the mush more or less evenly across the bottoms of a mason jar and pickle jar. I put one in the freezer for later.
I learned a new word today, excelsior,
wood shavings (thin curly wood shavings used for packing or stuffing)
In this case, the source of my excelsior - pods of a Northern Catalpa - proved the first positive about having a nearly all year mess of the foot-long woody pods in the yard. Those woody pods are perfect excelsior material for my pet flies to find a purchase.
I shook 30-40 flies from the original culture into their new breeding grounds and locked them in with a paper towel and rubber bands.

Labels: apples, blending, carnivorous plants, diy, pet food, poison dart frogs, recipes, science


