Entomophaga

, Volume 22, Issue 4, pp 421–423 | Cite as

Predatory efficiency and biology of the predatory mite,Amblyseius gossipi [Acarina: Phytoseiidae] as affected by plant surfaces

  • Aly H. Rasmy
Article

Abstract

The predatory mite,Amblyseius gossipiElbadry was reared on leaves of sour orange and fig. The sour orange leaves, which have smooth surfaces, promoted a faster development and a higher rate of prey consumption, whereas the hairy fig leaves led to a retardation in the predator development and a lower rate of prey consumption. The distinct preference of this predator for smooth leaves explains its abundance on citrus trees and its scarcity on fig trees. Thus, „thigmotaxis” is not a common feature among predacious mites but a specific character.

Keywords

Plant Pathology Smooth Surface Specific Character Plant Surface Fast Development 

Résumé

L'acarien prédateur,Amblyseius gossipiElbadry a été élevé sur des feuilles de bigarradier et de figuier. Les premières à surface lisse déterminent un développement plus rapide et un taux de prédation plus élevé, alors que les feuilles poilues du figuier causent un retard dans le développement du prédateur et une moindre activité alimentaire. La préférence pour les feuilles lisses explique l'abondance de ce prédateur dans les citrus et sa rareté dans les figuiers. Ainsi, le «thigmotactisme» n'est pas un phénomène commun chez les acariens prédateurs mais un caractère spécifique.

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Copyright information

© Le François 1977

Authors and Affiliations

  • Aly H. Rasmy
    • 1
  1. 1.Plant Protection Dept.National Research Centre, DokkiCairoEgypt

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