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Earthworm question.

J

jack

Guest
Someone told me that "bait shop" earthworms had a high nitrate content and that they could be hazardous to amphibians. Is this correct? If so, could you change the substrate and feed properly, thus reversing the high nitrate problem?
 
J

jesper

Guest
I don't think a high nitrogen content in the food would be reflected in the nitrate levels. As far as I know all animals use urea as the carrier of excess nitrogen - the worms excrete their urea in their castings.

The problems seems to be that worm farmers spread pure urea into the substrate to increase the nitrogen content in the worm castings(which they sell as plant growth enhancer).

I'd say that homeostasis mechanisms will keep the total nitrogen levels in their body rather constant, if they load the substrate with too much urea they will most likely screw up the mechanisms at work resulting in intoxication and death.
 
J

jack

Guest
Thanks for the info, Jesper. So basically, there should be no problem with feeding worms from a bait shop?
 
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