Journal
PARASITE
Volume 7, Issue 3, Pages 185-191Publisher
EDP SCIENCES S A
DOI: 10.1051/parasite/2000073185
Keywords
lectins; ultrastructure; histochemistry; Myxozoa; Teleostei
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The existence and localisation of carbohydrates in lour myxosporean parasites was investigated at transmission electron microscope, using lectin histochemistry techniques. The Myxosporea studied showed different lectin binding patterns. N-acetyl-glucosamine or its polymers were predominant in the valves of Leptotheca sp, and were also present in Sphaerospora dicentrarchi and Polysporoplasma spoils ones. Mannose and/or glucose terminals were mainly detected in S. dicentrarchi and P. spoils valves. Polar capsule walls were intensively recognised by Con-A in S, dicentrarchi and with medium intensity in P. sparis and leptotheca sp. The polar filament was scarcely labelled except in Leptotheca sp. with BS-I. The sporoplasms of the studied parasites were stained with all the lectins tested with each myxosporea, except those of Leptotheca sp, with BS-I. Some structures of the developmental stages of Zschokkella mugilis and leptotheca sp, were stained with BS-l. The possible role of these carbohydrate terminals found in the studied Myxosporea is discussed.
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