Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Studies on dispersal of sterile Carposina nipponensis using mark-release-recapture technique.

Abstract

Larvae, pupae, adults, spermatophores and F1 eggs of Carposina niponensis were successfully marked by feeding the insect a diet incorporating Sudan Blue 670 (II) dye at 500 p.p.m. The dye had no deleterious effects on the pest. Marked adults dispersed randomly in an orchard in China, with 80% of them dispersing to within a radius of 100 m. The furthest distance an adult dispersed was 225 m. Computer simulation showed that the dispersal density (N) was linearly related to the reciprocal distance (1÷X) and was described by the equation N = -0.67 + 402.45÷X.