Besides the Congo floor maggot, do myiasis-causing flies (oestrids, calliphorids, etc) blood-feed on humans or animals, or do they just invade tissue?

Myiasis is the invasion of host tissue, but is there active blood-feeding, or is there another source of nutrition for the maggots in order to develop through their instars

10 January 2017 7,655 4 View