An immune response-dependent mechanism for the vertical transmission of an entomopathogen

A. Warburg*, K. Ostrovska

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

An exceptionally efficient mechanism for the vertical transmission of a parasitic gregarine is dependent on the insect host's immune response. Gametocysts of Ascogregarina chagasi on the genital accessory glands of adult female sand flies (Lutzomyia longipalpis) become encapsulated through hemocyte-mediated immune reactions. Oocysts of A. chagasi, ejected into the lumen of the glands owing to pressure exerted by this capsule, become glued to eggshells and are subsequently ingested by larvae. In L. longipalpis with an experimentally suppressed encapsulation reaction, fewer accessory glands contained oocysts of A. chagasi.

Original languageAmerican English
Pages (from-to)770-772
Number of pages3
JournalExperientia
Volume45
Issue number8
DOIs
StatePublished - Aug 1989
Externally publishedYes

Keywords

  • Humoral encapsulation
  • gregarine
  • parasitic life cycle
  • sand fly
  • vertical transmission

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