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  • noun

Words related to gregarine

vermiform protozoans parasitic in insects and other invertebrates

References in periodicals archive ?
The oocysts of this gregarine protozoan were pyriform in shape and measured 20 [micro]m (range, 18-22 [micro]m) in length and 15[micro]m (range, 11-16 [micro]m) m in width (n = 30).
Gregarines of the genus Nematopsis use marine bivalves as normal intermediate hosts, completing their life cycle in the gut of marine arthropods, and are usually associated with a focal hemocyte infiltration, without measurable effects on host health (Lauckner 1983).
whereas absence of host reaction by gregarines of the genus Nematopsis in the gut epithelial cells was reported by Winstead et al.
Three new species of gregarines (Apicomplexa: Sporozoea: Porosporidae) in the estuarine crab from Kerala, India.
Infection intensity of gill gregarines was overwhelmingly highest in oysters from central Texas on the Gulf coast, supporting the suggestion of Sprague and Orr (1952, 1955) that the gregarine in the gill is different from the one in mantle tissue in Gulf-coast oysters.
Excluding the numerically-dominant gregarines, however, removed the differential between oysters and mytilids, with the exception of East-coast mytilids that were more frequently parasitized than East-coast oysters.
gill and digestive tract), as were the gregarines (viz.
Because of the numerical dominance of the gregarines in oyster taxa, a modified total parasite body burden was also calculated as the sum of the quantitative counts of the remaining parasite groups.
Gregarines are widely distributed in oysters along the East and Gulf coasts (Landau & Galtsoff 1951, Otto et al.
Mytilids and oysters were not significantly different from each other, however; thus, the gregarines were primarily responsible for the higher prevalence of parasitism in oysters.
The prevalence of protozoa including ciliates, but excluding gregarines, haplosporidians, and apicomplexans, did not differ significantly between mytilids and oysters (Fig.
It was reported that gregarines of the genus Nematopsis cause focal hemocytic infiltration at most, without obvious pathogenic effects (Bower et al.
Gregarines del genere Nematopsis (Apicomplexa: Porosporidae) in Molluschi bivalvi del mare Adriatico.
In addition, Cremonte and Figueras (2003) reported, for the first time for this species, coccidian and gregarines in a sample of yellow clam from Isla del Jabali, which was taken 2 years before the mass mortality.