International Journal of Tropical Insect Science

, Volume 10, Issue 5, pp 617–623 | Cite as

Life History of the Predatory Mite, Cydnodromella Negevi and the Effect of Nutrition on Its Biology (Acari: Phytoseiidae)

  • B. A. Abou-Awad
  • A. K. Nasr
  • E. A. Gomaa
  • M. M. Abou-Elela
Research Article


The predacious mite, Cydnodromella negevi (Swirski & Amitai) completed life cycle when fed on the tetranychid mites Eutetranychus orientalis (Klein), Tetranychus urticae Koch and pollen grains of Ricinus communis (L.) as an alternative food substance in the laboratory. The duration of the immature stages and adult stage were determined. Immature stages of C. negevi consumed in total an average of 27 E. orientalis and 34 T. urticae, whereas each day throughout her life, the adult female consumed an average of 11 of E. orientalis and T. urticae. While feeding on these prey, C. negevi laid 13 and 1.0 eggs per day. The number of eggs deposited per day increased (33 eggs/female/day) when fed on eriophyid mites. Females neither fed nor reproduced on liquid nutrients.


L’acarien prédateur Cydnodromella negevi (Swirski et Amitai) a achevé son cycle de vie quand il s’est nourri des acariens tetranychides Eutetranychus orientalis (Klein), Tetranychus urticae Koch et de grains de pollen de Ricinus communis (L.) comme substance alimentaire de remplacement au labratoire. Les dureés des stades non murs et adulte ont été déterminées. Les stades pré-adultes consomment au total en moyenne 27 E. orientalis et 34 T. urticae par jour pendant toute leur existence, la famella adulte une moyenne de 11 E. orientalis et T. urticae. Elle pond 1.3 et 1.0 oeufs par jour. Le nombre d’oeufs déposés par jour a augmenté (3.3 Oeufs/female/jour) lorsqu’il s’alimentait sur de acariens eriophyides. Les femelles ne s’alimentaient ni ne se reproduisaient sur liquide nutritif.

Key Words

Biology Cydnodromella negevi Phytoseiidae Acari predacious mites 


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Copyright information

© ICIPE 1989

Authors and Affiliations

  • B. A. Abou-Awad
    • 1
  • A. K. Nasr
    • 1
  • E. A. Gomaa
    • 1
  • M. M. Abou-Elela
    • 1
  1. 1.Plant Protection DepartmentNational Research CentreDokki, CairoEgypt

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