Desert Locust Bulletin 321 (June 2005) [EN/AR]
General Situation during June 2005
Forecast until mid-August 2005
Although there was an increase in the number of solitarious locusts in the summer breeding areas in the Sahel in West Africa during June, there was no indication of an invasion and substantial control operations were not necessary. Nevertheless, ground teams treated small areas in central Niger and southern Algeria where local breeding was in progress. In Sudan, several Southern Circuit swarms laid eggs in Darfur that hatched and hopper bands formed. A few other swarms moved across central Sudan and one may have reached northern Ethiopia. Elsewhere, insignificant infestations were present in southern Egypt, northern Somalia and in the interior of Saudi Arabia and Yemen. Small-scale breeding will occur during July and August in the Sahel in West Africa and Sudan and cause locust numbers gradually to increase.
Western Region. During June, solitarious adults began to appear in southeastern Mauritania, northern Mali and in Tamesna, Niger. Small-scale breeding continued in central Niger near Tanout where control operations treated several hopper groups and bands. Hoppers and adults were also controlled in southern Algeria where small-scale breeding had occurred. The situation is less clear in Chad where breeding and control operations may have occurred in June. In Northwest Africa, control operations ended in the spring breeding areas and no further locusts have been seen. During the forecast period, locust numbers will continue to increase in the northern Sahel as small-scale breeding occurs in those areas that receive rainfall. Intensive surveys must be maintained on a regular basis in all areas throughout the summer.
Central Region. Several Southern Circuit swarms that arrived in late May from West Africa laid eggs in Darfur, Sudan in June and, by the end of the month, hatching and band formation had commenced in a few places. A small number of swarms moved across central Sudan from Darfur to eastern Sudan and one reportedly continued to northern Ethiopia where it dispersed. Locust numbers will increase during the forecast period in the summer breeding areas in Darfur and Kordofan, Sudan as more eggs hatch and hoppers form bands. Elsewhere, local breeding occurred near Aswan, Egypt and solitarious adults were present in a few farms in the Western Desert. Scattered solitarious adults were reported in the interior of Saudi Arabia and Yemen, and in parts of northern Somalia.