Current Microbiology

, Volume 36, Issue 1, pp 1–8

Distribution of Parthenogenesis-Inducing Symbionts in Ovaries and Eggs of Aphytis (Hymenoptera: Aphelinidae)

  • Einat  Zchori-Fein
  • Richard T.  Roush
  • David  Rosen

DOI: 10.1007/s002849900270

Cite this article as:
Zchori-Fein, E., Roush, R. & Rosen, D. Curr Microbiol (1998) 36: 1. doi:10.1007/s002849900270

Abstract.

In parasitic Hymenoptera, severe sex ratio distortions are sometimes associated with the presence of symbiotic microorganisms. Symbiont-induced uniparental reproduction is found in several species of the genus Aphytis and is suspected in others. These intracellular bacteria (called Wolbachia) reside within the egg cytoplasm. In order to follow their vertical transmission, the distribution pattern of the symbionts in ovaries and eggs of two uniparental lines (A. lingnanensis and A. yanonensis) was studied by electron, confocal, and two-photon microscopy. The results obtained suggest that Wolbachia move from nurse cells to developing oocytes. In freshly laid eggs, the symbionts are concentrated in the posterior pole, away from the micropyle, and in later stages of embryogenesis they are found surrounding nuclei throughout the embryo.

Copyright information

© Springer-Verlag New York Inc. 1998

Authors and Affiliations

  • Einat  Zchori-Fein
    • 1
  • Richard T.  Roush
    • 2
  • David  Rosen
    • 1
  1. 1.Department of Entomology, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, 76100, Israel IL
  2. 2.Department of Entomology, Cornell University, Ithaca, NY 14850, USA US

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