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Desert Locust Bulletin 331 (April 2006) [EN/AR]

Situation Report
Originally published


General Situation during April 2006
Forecast until mid-June 2006

The Desert Locust situation remained calm during April. Small-scale breeding occurred in northwest Mauritania, near the Algerian border in Morocco, and in the eastern Sahara in Algeria. Low numbers of solitarious adults were present in parts of northern Mauritania and northern Mali. No locusts were reported in other regions where rainfall was poor and conditions were generally dry. During the forecast period, limited hatching will occur in Morocco and some breeding could take place in parts of northern Mauritania and Western Sahara. No significant developments are expected.

Western Region. Isolated solitarious adults were maturing in northern Mauritania during April, and small-scale breeding continued in a small area in the northwest. The situation may be similar in adjacent areas of Western Sahara. Unless further rainfall occurs, locusts will decline and start to move in May towards the summer breeding areas in southern Mauritania. Small-scale breeding is in progress in a limited area along the Algerian border in Morocco where hatching is likely in early May, giving rise to low numbers of solitarious hoppers that should fl edge and become adults by mid-June. Local breeding also occurred in the eastern Sahara in Algeria where ground teams treated 20 ha of hoppers. A few isolated individual solitarious adults were reported on the Tamesna Plains in northeast Mali. Similar populations could be present in the Air Mountains in Niger.

Central Region. Although no locusts were reported in the region during April, there is a possibility of low numbers of solitarious adults on the Red Sea coastal plains in Yemen. As good rains fell early in the month over the southwestern part of the Arabian Peninsula, small-scale breeding could occur on the coast near the Yemen/Saudi Arabia border.

Eastern Region. No locusts were seen during a joint survey in the spring breeding areas in eastern Iran and western Pakistan in April. Although light rain fell at times, breeding conditions were generally unfavourable. By the end of the forecast period, a few isolated adults may start to appear in the summer breeding areas along the Indo-Pakistan border but no significant developments are expected.