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Ultrastructure of Thelohania duorara Iversen & Manning, 1959 (Microspora, Thelohaniidae) in the Pink Shrimp, Penaeus duroarum Burkenroad
Author(s) -
IVERSEN E. S.,
KELLY J. F.,
ALZAMORA D.
Publication year - 1987
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1987.tb01074.x
Subject(s) - polar filament , shrimp , biology , ultrastructure , microsporidia , parasite hosting , penaeus , microspora , protein filament , anatomy , spore , telson , crustacean , decapoda , zoology , microbiology and biotechnology , botany , fishery , pollen , stamen , microspore , world wide web , computer science , genetics
. The structure of Thelohania duorara Iversen & Manning, 1959, a micro‐sporidian parasite of pink shrimp. Penaeus duorarum Burkenroad, was examined with electron microscopy. Earliest developmental stages observed were limited to diplokaryotic cells. Both microtubules associated with exospore formation, and hair‐like filaments, projecting from the outer surface of the exospore, were observed during sporogony. The continuity of the cisternae of the polaroplast, the perinuclear cisterna, the outer membrane of the polar filament and membranes surrounding masses of secretion granules were noted. Mature spores had a granular endospore and hair‐like filamentous projections on the exospore surface. The polar filament made 13–14 turns, the most distal being slightly constricted. Information presented here indicates that T. duorarum should be retained within the genus Thelohania as it is now defined.