ATTRACTION OF INDIAN FRUIT FLIES TO COLOURED SPHERES

T. JIJI, J. THOMAS, H.S. SINGH, R.C. JHALA, R.K. PATEL, A. NAPOLEON, SENTHIL KUMAR, C.V. VIDYA, A. MOHANTHA, D.B. SISODIYA, B.K. JOSHI, J.M. STONEHOUSE, A. VERGHESE, J.D. MUMFORD

Abstract


The attraction of Tephritid fruit flies (mostly melon flies, Bactrocera  cucurbime Coq.) to coloured plastic balls was assessed in fields in different parts of  India. Near Thrissur (Kerala, southem India) melon flies were attracted to yellow, green  and red; those near Bhubaneswar (Orissa, eastern India) were attracted to green and  pink but not orange; those near Anand (Gujarat, western India) were attracted to pink,  red and green. Bnctmcem species near Sardarknrshinagar (Gujarat, western India) were  attracted significantly more to balls of increasing redness along the scale yellow-orange-  red. Flies near Thiruvananthapuram were attracted, in rank order, most to orange, then  yellow, violet, green, red and blue, and to balls of 8cm diameter significantly more than  of 6cm. Overall, flies were attracted to an increasing scale of“redness" with a peak at  yellow/orange rather than red itself.


Keywords


Bactrocera cucurbitae; coloured spheres

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