n African Entomology - The relationship between citrus thrips, (Thysanoptera : Thripidae), abundance and fruit size in mango orchards

Volume 11, Issue 1
  • ISSN : 1021-3589



Population levels of the citrus thrips, Faure (Thysanoptera : Thripidae), were monitored for two consecutive seasons in mango ( L. (Anacardiaceae)) orchards in the Mpumalanga province of South Africa. Yellow sticky card traps were used to monitor adult numbers, while counts on the fruit were conducted to monitor numbers of adults and larvae. Fruit size was measured throughout the season. Hoerl's function ( = bcX) was used to describe the relationship between the number of on the fruit and fruit size, as well as the number on the traps and fruit size. A notable feature in the population dynamics of was the rapid decline in numbers after the population peak had been reached. The highest numbers of were present between fruit set and when fruit reached 40 mm in length. Fruit size can therefore be used as an indicator of potentially damaging number. Producers should do regular monitoring from fruit set until fruit reach 40 mm.

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