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An order of sporozoan protozoa (subclass Piroplasmia, class Sporozoea) consisting of the families Habesiidae, Theileriidae, and Dactylosomatidae; includes heteroxenous tick-borne blood parasites of vertebrates with reduced apical complex, lacking spores, and with asexual reproduction by binary fission or schizogony.
References in periodicals archive ?
A genus of protozoa of the order Piroplasmida, named for Victor Babes (1854-1926), a Romanian bacteriologist who discovered a parasitic sporozoon in ticks in 1885.
The chosen primers corresponded to the sequences of most Piroplasmida species (including those listed above) but significantly differed from those of P.