One who depends on another for support without reciprocating
A plant or animal living on another
The generic name of Trypanosoma was conferred by Gruby in 1843 upon the wellknown parasite of frogs.
Sheep, how ever, suffer most from this parasite and from the allied D.
There it feeds first as an internal parasite of the waspgrub, then bores its way out, moults and devours the wasp larva from outside.
Perhaps the converse is more feasible in some circumstances - that is to say, preventing mosquitoes from having access to malarial persons, and so propagating the parasite in themsevles.
The parasitic hypothesis postulates the invasion of a parasite from without, thus making a new growth an infective process.