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Male production induced by antibiotic treatment inEncarsia formosa (Hymenoptera: Aphelinidae), an asexual species


The production of large numbers of males in the thelytokous speciesEncarsia formosa was induced by feeding antibiotics to their mothers. The males induced by antibiotic treatment produce sperm and sometimes mate with females, but insemination does not occur.

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Zchori-Fein, E., Roush, R.T. & Hunter, M.S. Male production induced by antibiotic treatment inEncarsia formosa (Hymenoptera: Aphelinidae), an asexual species. Experientia 48, 102–105 (1992).

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Key words

  • Thelytoky
  • microorganisms
  • autoparasitoid
  • biological control
  • sex ratio
  • parthenogenesis