Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Emergency Transboundary Outbreak Pest (ETOP) situation bulletin for April with a forecast through mid-June 2021.

Abstract

The Desert Locust (Schistoseca gregaria - SGR1): In the Central Outbreak Region (COR) there was a significant decline in swarm numbers due largely to intensive control and delayed seasonal rain in Ethiopia and Somalia. As rains began falling in breeding areas in Ethiopia, swarms began maturing and laying eggs and some began moving east to northwest Somalia. In northeast Somalia, swarms remained immature due to dry conditions. Control operations treated 14,370 ha in Ethiopia and 5,120 ha in Somalia during this month. In Kenya, where a significant swarm decline was reported, only 136 ha were treated during this month. An immature swarm was reported in northeast Tanzania. Fledging occurred on the Red Sea coast of Sudan and treated 4,640 ha. In Saudi Arabia, widespread hatching and band formations were reported in the interior of the country where fledging and immature adults were formed towards the end of April; control operations treated 8,250 ha during this month. Strong southerly winds carry mature adult groups and small swarms from Saudi Arabia to Iraq (140 ha controlled), Jordan (1,500 ha treated), Syria (2,867 ha treated), Lebanon (406 ha treated), Israel, and Sinai in Egypt (307 ha treated). In the western outbreak region (WOR), limited localized breeding occurred in Algeria and scattered adults were detected in northern Mali. In the eastern outbreak region (EOR) only a few mature swarms from Saudi Arabia arrived in southwestern part of Iran and were treated on 1,521 ha during this month.