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Related to Gregarines: Gregarinia, Gregarinasina


Any of various apicomplexan protozoans that are parasitic within the digestive tract and body cavity of invertebrates, including many insects and mollusks.

[From New Latin Gregārīna, type genus, from Latin gregārius, belonging to a flock; see gregarious.]

greg′a·rine′, greg′a·rin′i·an (-rĭn′ē-ən) adj.


(ˈɡrɛɡəˌriːn; -rɪn)
(Animals) any parasitic protozoan of the order Gregarinida, typically occurring in the digestive tract and body cavity of other invertebrates: phylum Apicomplexa (sporozoans)
(Animals) of, relating to, or belonging to the Gregarinida
[C19: from New Latin Gregarīna genus name, from Latin gregārius; see gregarious]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gregarine - vermiform protozoans parasitic in insects and other invertebratesgregarine - vermiform protozoans parasitic in insects and other invertebrates
sporozoan - parasitic spore-forming protozoan
Gregarinida, order Gregarinida - an order in the subclass Telosporidia
References in periodicals archive ?
Gregarines and coccidians were suspected to be involved in the mass mortality events of A.
solida was parasitized by prokaryotic inclusions in the digestive epithelium, intracellular inclusions of bacteria-like organisms and ciliates in the gills, gregarines similar to Nematopsis parasitizing exclusively the connective tissues of most organs, and a turbellarian similar to Paravortex in the intestine lumen.
Gregarines usually reduce the fecundity and reproductive potential of female mosquitoes and could be explored as biocontrol for mosquito control strategies.
The authors suggested that the clinal variation in B-chromosome frequency might be attributed to variability in the geographic abundance of gregarines.
Numerous gregarines indeed parasitize holothuroids and spatangoid echinoids, with 22 known species, including D.
In Japan, infestation by gregarines has been observed to vary between seasons for Leiobunum manubriatum and between populations for L.
71-99, in Protozoa: Gregarines, haemogregarines, coccidia, plasmodia, and haemoproteids.
The multicellular eukaryotes and the gregarines often showed significant year-to-year changes without trend.
The following infectious agents were observed on slides: viruses (Viral gametocyte hypertrophy), Rickettsia/Chlamydia/Mycoplasma (rickettsia-like organisms, RLOs), ciliates (Ancistrocomidae) on the gills and in the stomach/intestine, xenomas (Sphenophrya-like ciliates), Sprague's Gregarines, Haplosporidium nelsoni (MSX), Nematopsis ostrearum, Turbellaria and Hexamita nelsoni, the average prevalences of each at each site are presented in Table 1.
Intrahemocytic oocysts of gregarines of the genus Nematopsis were detected from A.