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  • Behavioural responses by Rh...
    Yee, W. L.

    Journal of applied entomology (1986), February 2012, Letnik: 136, Številka: 1-2
    Journal Article

    Kaolin‐ and limestone‐based products were compared for their effects on two behavioural responses, landing and oviposition, to sweet cherry by Rhagoletis indifferens Curran (Dipt., Tephritidae). Surround (95% calcined kaolin), Cocoon (100% hydrous kaolin), Eclipse (>97% limestone) and Purshade (62.5% limestone) were studied. Overall, in choice and no‐choice tests, Surround reduced landing and oviposition more than Cocoon, Eclipse and Purshade. However, all products significantly reduced landing and oviposition compared with untreated controls. In choice tests, high fly density increased the proportion of eggs laid in cherries treated with Surround, Cocoon, or Eclipse vs. cherries that were untreated when compared with low fly density. Applications of 3% followed by 6% Surround reduced landings and oviposition more than two applications of 10% Cocoon, Eclipse, or Purshade. Surround caused higher mortality than Cocoon and Eclipse. In the field, Surround reduced production of puparia from cherries by 32.3% to 100%, depending on the trees sprayed. Surround provided the best protection for cherries against R. indifferens, but limestone‐based products potentially might be modified to be oviposition deterrents. Consideration should be given to fly densities when using particle films to protect fruit.