Morphological characters of fruit fly Bactrocera dorsalis complexon oranges plantation at Karo district, North Sumatera, Indonesia
B Manurung, A Hasairin, P Prastowo, P Y A Panjaitan, F Sianipar
The aim of this research is to know the fruit fly species and fruit fly morphometric that infested the two oranges plantations at Karo district, North Sumatera province. This study aims also in understanding the relationship among body length of obtained fruit flies and its other morphological characters. This investigation also has goal to comprehend the differences of fruit flies body size that be found at two oranges crops that diffrent in Karo district. The sampling of fruit flies has been done on the oranges crops that located in Rumanis and Garingging villages. The fruit flies were collected by using steiner traps that be given with methyl eugenol lure on cotton. The identification of fruit flies was carried out by classical approach, namely based on morphology features. The morphological characters that be observed and measured were body length (Y), wing length (X1), wing width (X2), hind leg length (X3) and tibia length (X4). The morphometric features measuring of fruit flies was undertaken under Stereo Zeiss-Stemi 2000-C microscope. Morphometric traits was analyzed descriptively. Meanwhile, the relationship among body length and other morphological traits and also significantly differences of fruit flies body size between Rumanis and Garingging villages analyzed by helping of software IBM SPSS Statistics 22. The result of investigation showed that the fuit flies that be collected from Karo distric citrus crops based on morphology belong to Bactrocera dorsalis Hendel species. The mean of the body length, wing length, wing width, hind leg length and tibia length of obtained fruit flies (n=60) were 6.85, 5.90, 2.35, 5.75 and 2.25 mm, respectively. There is no significantly differences of fruit flies body size between Rumaris and Garingging oranges crops, except in wing width (U=308.000, P=0.03). The morphological trait that has highest contribution regarding body length prediction was wing length with determinat coefficient 56.8%. The multiple regression equation among body length of fruit fly (n=60) toward its other morphological traits (X1-X2) was displayed by equation Y = 1.54 + 0.67X1 + 0.57X2 ( r2=59.6%).
B Manurung, A Hasairin, P Prastowo, P Y A Panjaitan, F Sianipar. Morphological characters of fruit fly Bactrocera dorsalis complex on oranges plantation at Karo district, North Sumatera, Indonesia. International Journal of Entomology Research, Volume 7, Issue 2, 2022, Pages 84-87