Influence of size and number of holes in bottle traps containing methyl eugenol on the capturing efficiency of fruit flies in guava and mango orchards.
Ravikumar C. H., Shashidhar Viraktamath
Author Affiliation: Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad, Karnataka 580 005, India.
Pest Management and Economic Zoology 14 : 115-119
Abstract : The influence of hole size and number of holes in a 1000 ml capacity pet bottle trap containing methyl eugenol was studied on capturing fruit flies in guava and mango orchards at Dharwad, Karnataka. Transparent bottles with 10 to 20 mm diameter holes captured significantly more number of adults of Bactrocera correcta Bezzi, B. dorsalis (Hendel) and B. zonata Saunders, considered either species wise or total catch per trap than those with smaller or bigger holes. Bottle traps with 4 holes of 20 mm diameter were found significantly superior in attracting higher number of adults of all the three species of fruit flies, than those with 1, 2, 3, 5 or 6 holes/trap. These results indicated that 1000 ml bottle traps with 4 holes of 20 mm diameter were ideal for capturing fruit flies inhabiting guava and mango orchards.