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Systenostrema alba Larsson 1988 (Microsporidia, Thelohaniidae) in the Dragonfly Aeshna viridis (Odonata, Aeshnidae) from South Siberia: Morphology and Molecular Characterization
Author(s) -
SOKOLOVA YULIYA Y.,
KRYUKOVA NATALIYA A.,
GLUPOV VIKTOR V.,
FUXA JAMES R.
Publication year - 2006
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.1550-7408.2005.00075.x
Subject(s) - biology , polar filament , dragonfly , odonata , ultrastructure , microsporidia , zoology , anatomy , spore , botany
. An octospore microsporidium was found in the nymphs of Aeshna viridis , collected in intermittent streams near Novosibirsk, Siberia, Russia in 2003. Spores were uninucleate and measured 6.1±0.07 × 3.0±0.04 μm on fresh smears. The polar filament was anisofilar having 10–11 anterior coils (thicker filament diam.) and 10–11 posterior (thinner filament diam.) coils. Sporophorous vesicles were persistent and measured 12.3±0.23 × 11.9±0.20 μm. The infection was restricted to the adipose tissue and caused the formation of whitish “cysts” containing mature octospores. Based on ultrastructural similarity we consider this Siberian isolate to be Systenostrema alba , a species described from Aeshna grandis collected in Sweden (Larsson 1988). Maximum likelihood, neighbor joining, and maximum parsimony analyses of the small subunit rDNA all placed Systenostrema alba (Accession no. AY953292) as the sister taxon to a clade consisting of Thelohania solenopsae , Tubulinosema ratisbonensis , and Tubulinosema acridophagus .