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A Rickettsia in the Ovary of the Twospotted Spider Mite, Tetranychus Urticae KOCH (Acarina: Tetranychedae)

Published online by Cambridge University Press:  02 July 2020

Allen R. Crooker
Allen R. Crooker*
Affiliation:
Department of Biology, Hartwick College, Oneonta, NY13820
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Extract

Rickettsias are small, gram-negative Alpha Proteobacteria that are, with one exception, obligate intracellular parasites. They are found in a wide range of arthropods. Some of these bacteria are arthropod-vectored disease agents of vertebrates. For example, rickettsias are the causative agents of human typhus and Rocky Mountain spotted fever. Others, such as Wolbachia, are important manipulators of their arthropod host's reproductive capabilities and are not currently known to be disease agents of vertebrates.

Research on Wolbachia and related rickettsias has increased dramatically in recent years. Most of the attention has been focused on insects, although there are occasional reports of rickettsiae being found in isopods and mites. Most recently, the use of molecular techniques has established that Wolbachia is widespread in spider and predatory mites. However, Wolbachia or other rickettsias have not been demonstrated ultrastructurally in the spider mites. This report documents the presence of a rickettsia in the ovary of the adult female twospotted spider mite, Tetranchus urticae Koch, an economically important pest of ornamental and crop plants.

Type
Microorganisms: The Good, The Bad, The Unusual
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 662 - 663
Copyright
Copyright © Microscopy Society of America

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References

References:

1.Tsagkarakou, A. et al., Insect Molecular Biology 5(3)(1996)217.CrossRefGoogle Scholar
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4. This research was funded by a Trustee Grant from Hartwick College.Google Scholar