Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Occurrence of melon and oriental fruit fly in Republic of Nauru.

Abstract

Traps baited with cuelure or methyl eugenol were investigated for monitoring Dacus [Bactrocera] spp. in Nauru in December 1993. Over a period of 3 days, the number of flies caught per trap averaged 2237.2/day with cuelure, catches being highest at the east coast of the island. With methyl eugenol, catches averaged 1114.7/day, and traps at the east coast and near a small lake in a central area were highest. D. frauenfeldi [B. frauenfeldi] comprised 99.9% of the catch with cuelure, whereas D. dorsalis [B. dorsalis] and B. frauenfeldi comprised 47.6 and 51.6%, resp., of catches with methyl eugenol. Smaller numbers of D. cucurbitae [B. cucurbitae] and D. xanthodes [B. xanthodes] were caught. After 3 days all 21 of the traps used were removed to a demonstration farm of area less than 2 ha. After about 1 month's trapping at a demonstration farm of less than 2 ha area with 21 traps, the numbers of flies attracted decreased significantly.