MITE HYPOPI ON TICKS

About authors:

H. V. Dubinina, Zoological Institute of the Russian Academy of Sciences, Universitetskaya Emb. 1, 199034 Saint Petersburg, Russia

A. N. Alekseev, Zoological Institute, Russian Academy of Sciences, Universitetskaya emb., 1, 199034 St. Petersburg,
RUSSIA

Acknowledgments:

The research reported in this publication was made possible in part by Grant №R1K300 from the Russian Federation Government and the Inter-national Science Foundation and by Grant № 94-04-12099 from the Russian Basic Research Foundation.

Annotation:

Hypopi of Troupeauia nova (Oudemans, 1906) (Acarina, Sarcoptiformes, Acaridae) were met on the tick-borne encephalitis and borreliosis vector Ixodes persulcatus for the first time. The ticks were collected in St.Petersburg Region during 1993 and 1994 seasons of tick activity. Seasonal changes in mite prevalence were noticed. Lower prevalence was noted at the temperatures over 10°C. The mites were more commonon females than on males, and on normal ticks more common than on ticks with exoskeleton abnormalities. Among the Borrelia sp. infected ticks with changes in the exoskeleton, the occurrence of specimens infested with mites was higher than among the normal ones. The possible causes of the above difference in occurrence are discussed. A morphological description is presented of T. nova hypopus, demonstrating its difference from the genus Schwiebea.

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