Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

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

Abstract

The Desert Locust (Schistoseca gregaria - SGR1): There was a significant decline in locust numbers in the Central Outbreak Region (COR), in Ethiopia and Somalia during April largely due to intensive control and delayed rains, however, the situation began changing in May as good rains that created favorable conditions for locusts to mature and begin breeding. Egg laying, hatching and hopper and band formations progressed over vast areas in eastern Ethiopia and Somalia and control operations treated 12,663 ha and 18,304 ha, in the two countries, respectively during May. In Djibouti, a couple of swarms were observed laying eggs, but control operations were not necessitated. No locusts were reported in Eritrea, Kenya, Oman, or Tanzania during this month. A significant decline was observed on the Red Sea coast of Sudan and just 2,868 ha were treated in May. Swarms from Saudi Arabia that invaded Syria, Iraq, Jordan, Lebanon, and Israel bred and caused hopper and group formations and control operations treated a few ten to a few hundred ha during May. Mature adult groups were controlled in some 20 ha in Sinai, Egypt. Hopper groups and bands were fledging and forming immature adult groups in the interior Saudi Arabia and controlled on 11,156 ha during the month. Some swarms from the interior of Saudi Arabia began moving south towards northern Yemen and will likely begin breeding in the interior of the country where ecological conditions are expected to have begun improving from good rains that fell and flooding earlier. In the Western Outbreak Region (WOR), limited breeding was reported in Algeria and control operations treated 32 ha near irrigated areas; some scattered adults were also detected in northeast Morocco, but overall, the region remained calm during this month. In the Eastern Outbreak Region (EOR), hatching and hopper and group formations continued in southwest Iran and control operations treated 6,370 ha, but no locusts were reported elsewhere in the region during Ma.