SOME BIOLOGICAL AND BEHAVIORAL ASPECTS OF ARABIAN RHINOCEROS BEETLE, Oryctes agamemnon arabicus Fairmaire (COLEOPTERA: SCARABAEIDAE: DYNASTINAE) UNDER IRAQI CONDITIONS | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 19, Issue 2, April 2014, Pages 0-0 | ||
| Authors | ||
| M. Z. Khalaf; F. H. Naher; M. W. Khudair; J. B. Hamood; H. S. Khalaf | ||
| Abstract | ||
| Laboratory and field studies were conducted to investigation some biological and behavioral aspects of Arabian Rhinoceros Beetle, Oryctes agamemnon arabicus Fairmaire. A sessional of infestation and damage of the borer under taken in date palm orchards in the Middle and Southern provinces of Iraq during the seasons of 2008-2013. Results of the laboratory experiments at 25 C0±2 and 65%RH ±10 showed that the mean duration of eggs of eggs incubation period was 13.2 days. Egg was ovoid in shape, pearly white and measured an average of 2.9 mm in length and 2.10mm in width. Larva is white color, measured an average of 76.8 mm in length, 16.1mm in width and 7.8g in weight. The duration time for all instars was 196 days. After moulting the pupa was initially creamy white. This color persisted for few hours, then changed gradually to yellow, yellowish brown, and faint brown after 9 days, measured an average 39.2mm in length, 27.4mm in width and 3.24 g in weight .The mean pupal period was 29 day .Adults were black in color, the male longer than the female with means of length of 39.4 and 33.4 mm, respectively. Field survey indicated that the larvae infest different parts of palm trees: Including rizosphere, trunk and crown area. The varieties Brem and Omrani were more sensitive than others. Results of this experiment will be reflected on all future research and control programs of date palm borers. | ||
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