Ultrastructural observations on Barroussia schneideri (apicomplexa,eucoccidiida) in the centipede Lithobius forficatus |
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Authors: | S.J. Ball |
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Affiliation: | Department of Biology, North East London Polytechnic, Romford Road, London E15 4LZ, England |
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Abstract: | The ultrastructure of the principal stages of Barroussia schneideri in the intestinal cells of the centipede, Lithobius forficatus, is described. The structure of the merozoites has much in common with that of other Eimeriidae: pellicle of an outer and two inner membranes, microtubules, mitochondria, micronemes, rhoptries, endoplasmic reticulum, and polysaccharide granules. The mature macrogamete has a large nucleus with a distinct nucleolus, wall-forming bodies of type 1 (WFB1), and presumably of type 2 (WFB2), and a large number of polysaccharide granules. The microgametocyte includes smaller polysaccharide granules closely associated with the cisternae of the endoplasmic reticulum. The microgametocyte surface is smooth in outline and has peripherally arranged nuclei. Microgametes have a curved nucleus, a mitochondrion, polysaccharide granules, and two flagella. One of the flagella is attached for some distance along the body. |
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Keywords: | Barroussia schneideri merozoite, macrogamete, microgametocyte, microgamete, ultrastructure of |
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