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Eur. J. Entomol. 1998, 95(2): 211-216
Effects of oviposition-deterring pheromone and allomones on Aphidoletes aphidimyza (Diptera: Cecidomyiidae)
RUZICKA Z. & HAVELKA J.
Larvae of Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae) secrete an oviposition-deterring pheromone (ODP). In choice tests, females of A. aphidimyza laid significantly fewer eggs on Vicia faba L. plants infested with Aphis fabae Scopoli (Homoptera: Aphidoidea) that were previously exposed to conspecific third-instar larvae or a water extract of their ODP.
A. aphidimyza females also laid fewer eggs on aphid-infested plants that were previously exposed to unfed first-instar larvae of Chrysopa oculata Say, Chrysopa perla (L.) or Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae), or second-instar larvae of Coccinella septempunctata L. (Coleoptera: Coccinellidae). However, the response to traces of C. carnea larvae was very weak.
KeywordsOviposition strategy, deterrent secretion, aphid predators, predaceous gallmidge, Aphidoletes aphidimyza, Cecidomyiidae, Chrysopa oculata, Chrysopa perla, Chrysoperla carnea, Chrysopidae, Coccinella septempunctata, Coccinellidae