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Henneguya adherens N. Sp. (Myxozoa, Myxosporea), Parasite of the Amazonian Fish, Acestrorhynchus falcatus
Author(s) -
AZEVEDO CARLOS,
MATOS EDILSON
Publication year - 1995
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.1995.tb05898.x
Subject(s) - biology , myxozoa , myxosporea , polar filament , parasite hosting , spore , ultrastructure , anatomy , zoology , protein filament , schizogony , botany , microsporidia , world wide web , computer science , malaria , immunology , plasmodium falciparum , genetics
ABSTRACT. A new species of myxosporean from the gill filaments of the freshwater teleost fish, Acestrorhynchus falcatus collected in the Amazon river is described from light and transmission electron microscope observations. The mature spores (total length 32.3 [30.7–35.1] μ) and all developmental stages were found in the same sporogonic plasmodium. The ellipsoidal spore body consists of 2 unequal shell valves adhering together along the suture lines. Each valve, tapering as a caudal projection, forms a long tail (length 20.5 [18.0–21.7] μm). The tail was surrounded by a homogeneous sheath on its length. The polar capsules measuring 3.1 × 1.2 μm contain 3–4 coils of the polar filament. All surfaces of the immature and mature spores were surrounded by a closely adherent homogenous structural sheath, mainly thicker around the tails. The taxonomic affinities of this parasite to other species are discussed.