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Ovary Development Period of Tree Locust Anacridium melanorhodon melanorhodon (Walker) in Breeding Habitat of North Kordofan, Sudan
Current Issue
Volume 7, 2019
Issue 1 (March)
Pages: 18-21   |   Vol. 7, No. 1, March 2019   |   Follow on         
Paper in PDF Downloads: 10   Since Apr. 26, 2019 Views: 90   Since Apr. 26, 2019
Authors
[1]
Omer Rahama Mohamed Rahama, Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan.
[2]
Amna Osman Mohammed Fadul, Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan.
[3]
Abdelmanan Elzein Hassan Elamin, Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan.
[4]
Magzoub Omer Bashir Ahmed, Department of Crop Protection, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan.
Abstract
Anacridium melanorhodon melanorhodon (Walker, 1870) (Acrididae: Orthoptera) has been known as the tree locust, it's one of the pests that cause damage to trees. In Sudan, it has called night wanderer because of its nocturnal activity behavior. This study was conducted at North Kordofan. The aims of the study are to examine the factors that influence the tree locust population movements and distribution in the location. These factors include starting period of ovary development in female reproductive system. Females counting from field twice a week, from first appearance to the end of maturation period. Females were dissected in the laboratory to count the ovarioles development. The results showed that, adults of the tree locust appeared in the field in May and sexual maturation began during May /June with the first rains and lasted about 4 weeks. Oviposition period was during June and July. The female laid 1-3 egg pods and each pod containing 150-200 eggs. Adults were encountered during periods of low rainfall and relative humidity. Ovarioles development showed that the first oocyte gave 20169 developed eggs on May and failed to produce eggs on June, July and August. The second oocyte had 23985 and 7350 completed eggs on July and August, respectively. The third oocyte failed to produce sound eggs on June and July, but succeed to produce 7343 completed eggs on August. That means females laid three egg pods separately according to rainfall.
Keywords
Tree Locust, Ovarioles, Development Period, Sudan
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