Field evaluation of attractants in the trapping of Anastrepha spp. (Diptera, Tephritidae), pests of fruit trees in tropical America. I. Molasses and torula yeast.
In September-November 1984, modified McPhail traps were used in a guava orchard in the Province of Alajuela, Costa Rica, to compare the effectiveness of 2 attractants (10% molasses and 10% Torula yeast) in trapping Anastrepha spp. The examples of Anastrepha caught comprised A. striata (67%), A. serpentina (18%) and A. obliqua (15%). Torula yeast was much more effective than molasses, the ratio between the attractants being 8.4:1. The recommendations made include the commercial production of Torula yeast in Latin America for use in baits.