Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

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

Abstract

The Desert Locust (Schistoseca gregaria - SGR1): Although a significant decline in locust numbers was observed through April into early May in Ethiopia and Somalia in the Central Outbreak Region (COR) where intensive control operations and delayed seasonal rains contributed, the situation changed rather immediately as good rains in May created favorable conditions for locusts to further develop. As a result, more hopper bands fledged leading to formation of immature swarms in northwest Somalia where close to 80,330 ha were reported treated; hoppers and immature swarms were also treated in eastern Ethiopia on some 6,435 ha. By the end of June, immature swarms had reached southeastern Amhara and adjacent areas of eastern Afar regions (according to local MoA staff, the pest caused mild damage to more than 36,000 ha in Amhara region). A few immature swarms were detected and treated on 10 ha in southeast Djibouti during June. Breeding ended in northern Saudi Arabia where 2,235 ha were treated, and immature swarms moved south into the northern highlands in the interior of Yemen and control was launched on 5 ha. Local breeding was detected near the Nile River in Sudan and treated on 330 ha and scattered adults were observed near summer breeding areas. Adults persisted in southeast Egypt. In the Western Outbreak Region (WOR), localized breeding was treated in 351 ha in central Algeria and isolated adults were detected in northeast Morocco. The Eastern Outbreak Region (EOR) remained calm, and no locusts were detected.