Effect of the Duck-Weed, Lemna Minor Vegetations on the Mosquito, Culex Pipiens Pipiens

  • M. A. A. Eid
  • M. A. E. Kandil
  • Eman B. Moursy
  • G. E. M. Sayed
Research Article


The mosquito C. p. pipiens L. never colonize sewerage water covered with duck weed. The Lemna minor vegetations affected the identification of the oviposition site by the females. The amputation of sensilla made the mosquito incapable of choosing the oviposition site. The immature stages of the mosquito are susceptible to the water borne synomones of the duck weed; the first instar larvae are most susceptible and have high mortality.

Key Words

Mosquito Culex pipiens pipiens Lemna minor oviposition repellent amputation of sensilla duck weed synomones larval susceptibility 


La moustique C. p. pipiens L. ne colonize jamais dans les eaux d’égouts couvertes par Lemna minor (duck weed). Les eaux salées et leur pH n’ont pas d’effets sur les colonies des moustiques. Seule, la présence des colonizations, et non leur densité, affecte la discrimination des lieux de pondre par les femelles des moustiques, il semble que c’est un effet repugnant. L’amputation des tarses et des antennes fait perdre à la femelle la capacité de trouver les lieux de pondre, ce qui prouve la présence des synomones secretés par L. minor dans l’air et l’eau des marais. Il semble aussi que les premières larves du C. p. pipiens sont plus sensibles, aux synomones de l’eau, ques les dernières larves.


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Copyright information

© ICIPE 1992

Authors and Affiliations

  • M. A. A. Eid
    • 1
  • M. A. E. Kandil
    • 1
  • Eman B. Moursy
    • 1
  • G. E. M. Sayed
    • 2
  1. 1.Faculty of AgricultureCairo UniversityGizaEgypt
  2. 2.Department of Economic EntomologyCairo UniversityGizaEgypt

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