Ringed micro-habitats as supplementations for predatory mites - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Conference Papers Year : 2023

Ringed micro-habitats as supplementations for predatory mites

Abstract

In augmentative biological control, the reproduction, survival and efficiency of predatory mites can be improved by providing supplementations such as artificial micro-habitats and alternative food sources. Building on previous results on food and micro-habitat supplementations for Neoseiulus cucumeris, the present study aimed to i) design a prototype of Ringed Micro-habitats (RM) easily usable in agricultural cropping systems and optimise its position on the plant; ii) test the effect of this RM on the reproduction of three predatory mite species: two generalists (Neoseiulus cucumeris and Amblyseius swirskii), and one specialist (Neoseiulus californicus); iii) test the effect of this RM on the reproduction of two phytophagous mite species: Polyphagotarsonemus latus and Tetranychus urticae. We evidenced that A. swirskii preferred to lay eggs in the RM prototype when it was installed in direct contact with the underside of a rose leaf instead of being suspended on the plant. We also demonstrated that leaves bearing RM prototypes significantly increased the reproductive output of both generalist predatory mite species, but they had no impact on the reproductive output of the specialist species. In addition, the presence of RM on plants had no effect on the reproductive output of the studied pest species. Results indicate that the provision of supplementations such as the RM can favour generalist predatory mite reproduction with no risk on pest promotion, opening new avenues for more efficient biological control with predatory mites.
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Dates and versions

hal-04166972 , version 1 (20-07-2023)

Identifiers

  • HAL Id : hal-04166972 , version 1

Cite

Cécile Bresch, Louise van Oudenhove, Julie Nardini, Lucas Browet, Lydia Ottenwaelder, et al.. Ringed micro-habitats as supplementations for predatory mites. IOBC-WPRS WGs 2023 - Integrated control in protected crops, temperate and mediterranean climate, Aug 2023, Brest, France. ⟨hal-04166972⟩
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