Desert Locust Bulletin 381 (June 2010) [EN/AR]
General Situation during June 2010
Forecast until mid-August 2010
The Desert Locust situation remained calm during June. Locusts declined in the spring breeding areas of Northwest Africa and Arabia due to control operations and drying conditions. Limited control was carried out against hopper bands in Saudi Arabia, groups of adults in Algeria and scattered adults in Morocco. Unusually heavy rains associated with Cyclone Phet fell in parts of Oman, Iran, Pakistan and India in early June. Small-scale breeding occurred in southwest Libya, the interior of Saudi Arabia and in eastern Ethiopia. Scattered adults were present in Sudan, Yemen and Oman. Seasonal rains commenced in the summer breeding areas of the Sahel in West Africa and Sudan. During the forecast period, small-scale breeding will occur in the northern Sahel of West Africa and Sudan and along the Indo-Pakistan border, causing locust numbers to increase slightly but remain below threatening levels. No signiﬁcant developments are expected.
Western Region. Locust populations declined in Northwest Africa along the southern side of the Atlas Mountains in Morocco where 303 ha of scattered adults were treated. Ground teams in Algeria treated 350 ha of solitarious hoppers and adults near cropping areas in the central Sahara. Small-scale breeding occurred in southwest Libya where scattered hoppers and adults were reported. No locust surveys were carried out in the summer breeding areas of the Sahel in West Africa. During the forecast period, locusts will decline in Northwest Africa as they move towards the southern Sahara in Algeria and the northern Sahel in West Africa. Small-scale breeding is expected to commence in southern Mauritania, northern Mali and Niger, and perhaps eastern Chad where seasonal rains started in June. This will cause locust numbers to increase slightly during the forecast period but remain below threatening levels.
Central Region. Locust infestations declined on the Red Sea coast of Saudi Arabia where control operations were carried out in May. Ground teams treated 5 ha of hopper bands that formed on the edge of the spring breeding area in the interior. Unusually heavy rains associated with Cyclone Phet fell in northern Oman in early June. Although only scattered adults were present, there is a high risk that additional breeding could occur during the next several months, causing locust numbers to increase. Surveys began in the summer breeding areas in the interior of Sudan and Yemen in June. So far, only low numbers of adults were seen in cropping areas along the Nile in northern Sudan and in a few places in Yemen. During the forecast period, small-scale breeding will occur in Sudan in areas where seasonal rains commenced in June. Isolated adults were seen in the Western Desert in Egypt. Undetected breeding occurred in eastern Ethiopia during May, giving rise to scattered hoppers and adults in June. During the forecast period, breeding is likely to continue in areas of recent rainfall. No locusts were reported elsewhere in the region.
Eastern Region. Low numbers of solitarious locusts began to appear in the summer breeding areas of Cholistan, Pakistan near the border of India in mid-June. Breeding conditions are expected to be unusually favourable this year along both sides of the border because of heavy rains that fell in early June from Cyclone Phet. Consequently, small-scale breeding will cause locusts to increase during the forecast period in both countries but numbers will remain below threatening levels. No locusts were reported in Iran and India during June.