Tissue distribution and prevalence of Wolbachia infections in tsetse flies, Glossina spp.
Article first published online: 25 DEC 2001
Medical and Veterinary Entomology
Volume 14, Issue 1, pages 44–50, March 2000
How to Cite
Cheng, Q., Ruel, T. D., Zhou, W., Moloo, S. K., Majiwa, P., O'neill, S. L. and Aksoy, S. (2000), Tissue distribution and prevalence of Wolbachia infections in tsetse flies, Glossina spp. Medical and Veterinary Entomology, 14: 44–50. doi: 10.1046/j.1365-2915.2000.00202.x
- Issue published online: 25 DEC 2001
- Article first published online: 25 DEC 2001
- Glossina austeni;
- G. brevipalpis;
- G. morsitans morsitans;
- Wolbachia pipientis;
- somatic tissue;
- tissue tropism
Tsetse flies Glossina spp. (Diptera: Glossinidae) harbor three different symbiotic microorganisms, one being an intracellular Rickettsia of the genus Wolbachia. This bacterium infects a wide range of arthropods, where it causes a variety of reproductive abnormalities, one of which is termed cytoplasmic incompatibility (CI) that, when expressed, results in embryonic death due to disruptions in fertilization events. We report here that in colonized flies, Wolbachia infections can be detected in 100% of sampled individuals, while infections vary significantly in field populations. Based on Wolbachia Surface Protein (wsp) gene sequence analysis, the infections associated with different fly species are all unique within the A group of the Wolbachia pipientis clade. In addition to being present in germ-line tissues, Wolbachia infections have been found in somatic tissues of several insects. Using a Wolbachia-specific PCR-based assay, the tissue tropism of infections in Glossina morsitans morsitans Westwood, Glossina brevipalpis Newstead and Glossina austeni Newstead were analysed. While infections in G. m. morsitans and G. brevipalpis were limited to reproductive tissues, in G. austeni, Wolbachia could be detected in various somatic tissues.