(0-4) Desert Locusts breed for several generations along the Red Sea coastal plains in the winter of 1992 and numbers build up. (5-6) The resulting swarms move to the Arabian interior and breed again during the spring of 1993. (6-8) The new swarms that were produced move east to India and Pakistan while others move west. Some of these stay in Sudan while the rest move ahead of the rains across the Sahel to Mauritania and breed. (8) Swarms that were produced during the summer of 1993 in West Africa move to North-West Africa and breed during the following spring. Infestations steadily declined during the subsequent summers in Mauritania. The swarms that moved to South-West Asia were controlled in the summer of 1993. pdf version of map


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