| Abstract: | Moniliformis dubius apparently evades the cellular defence reaction of the normal intermediate host, Periplaneta americana, by the production of a non-cellular envelope. Larval development will occasionally occur in other species of cockroaches: though some of these species reject tissue transplants from P. americana, they do not respond to the envelope of M. dubius when the parasite is transplanted from P. americana. This contrasts with the response elicited by gregarines transplanted from P. americana into other cockroach species, and it is suggested that the envelope surface of M. dubius mimics, but is not identical to, the surfaces of tissues from P. americana. |
