ESTIMATION OF THE FAVOURITE FLIGHT DIRECTION AND FLIGHT DISTANCE OF TROPINOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE)

Document Type : Original Article

Authors

1 Faculty of Agricultural, Zagazig University, Zagazig, Egypt

2 Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt

Abstract

This experiment was carried out in navel orange orchard at El­Khattara region during two successive flowering seasons 1994 & 1995. Four releases of Tropinota squalida Scop. adults were carried out in each season, adults were collected, sexed and marked by fixed varnish col­ours, one colour for each releases (200 adults; 100 6+ 100 9). The re­leasing was applied at the flowering period which extended from March —May. It was found that, the majority of beetles were more attracted in descending order to the western, southern, S/W and S/E. These results may help in selecting the suitable sites for monitoring or control of T.squalida. The female adults longer distances than males, 68.4% males, 56.4% females flew to 50m., while 29.3% mate, 40.7% female flew a distance of 100m. A percentage of 2.3% males and 2.9% females re­corded at distance of 170m. In general, 61.4% of the total released adults flew a distance of 50m., 36% flew to 100m. and 2.6% flew to a distance of 170m.

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