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Unaltered hematocrit values and differential hemocyte counts in acanthocephalan infected armadillidium vulgare



Unaltered hematocrit values and differential hemocyte counts in acanthocephalan infected armadillidium vulgare



Journal of Invertebrate Pathology 38(2): 209-212



Three cell types were present in A. vulgare hemolymph. Hyaline cells, 8.2-12.0 .mu.m in size with a few fine granules in the cytoplasm, comprised 42% of the cells; 12% of the cells were nonexplosive granulocytes, 8.8-15.0 .mu.m, with many cytoplasmic granules of medium size. A 3rd cell type, an explosive 7.2-12.0 .mu.m granulocyte with coarse cytoplasmic granules, comprised 46% of the cells. Within 48 h after adult specimens of A. vulgare were fed eggs of the acanthocephalan, Plagiorhynchus cylindraceus, isopod hemocytes aggregated in the intestinal epithelium surrounding penetrating acanthors. Encapsulation and death of the parasite routinely followed. No significant difference in hematocrit values or in differential hemocyte counts occurred between infected and uninfected control isopods.

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Accession: 006864746

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