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Asia. At times they extend their range to southern and eastern Africa and beyond. In their migratory
phase they can form highly mobile swarms made up of several hundred million individuals, which
aided by the wind can advance up to 150 km in a day, consuming all plants in their path. In plague
years, these locusts can strip areas of almost all vegetation. Desert locusts are among the most serious
threats to food security in areas that are already vulnerable because of their marginality, and which are
increasingly subject to the negative consequences of climate change.
Controlling this serious pest has always been challenging because it is difficult to predict where and
when it will pose a problem. Much of the success in combatting desert locusts, using conventional
chemical control and biopesticides, rests on early warning systems, which in turn relies entirely on the
field data collected by surveillance teams of the commissions’ member countries.
FAO carries out its desert locust work through three specialized commissions ? CLCPRO - Commission
for Controlling the Desert Locust in the Western Region, CRC ? Commission for Controlling the Desert
Locust in the Central Region and SWAC ? Commission for Controlling the Desert Locust in Southwest
Asia. FAO’s desert locust commissions ensure continuous surveillance and early warning based on FAO’s
Desert Locust Information Service (DLIS), which monitors ecological and climatic conditions and makes
the latest information available on its Locust Watch Website.
Modern technologies support locust monitoring and control
Modern technology has much to offer for effective desert locust monitoring and control. This includes
surveillance drones and their accompanying infrastructure technology, such as the system for data
collection in the field and RAMSES (Reconnaissance And Management System of the Environment of
Schistocerca), which is a custom software application comprising a database and a Geographic
Information System (GIS) that stores the georeferenced results of survey and control operations. These
data are then visualized by GIS on maps to describe a current situation and predict a desert locust
situation in the near future. The field data are integrated into the SWARMS global information system
at FAO Headquarters.
FAO's three regional desert locust commissions (CLCPRO, CRC, SWAC) agreed to dedicate some of their
annual budgets to support, maintain and upgrade the latest version of RAMSES.
Fakaba Diakite, former Director of the National Desert Locust Control Center of Mali, points out that
“One of CLCPRO's strategic axes is research, for which funds have been made available for the
development of new technologies.” New technologies will continue to be key to improving desert
locust monitoring and control. Another commentator said that “digital solutions made it possible for
the CLCPRO to be at least a few more steps ahead of the desert locust.”
eLocust3m is a smartphone and tablet app in which national locust officers and other trained users
can enter and transmit comprehensive field data on any prevailing desert locust situation. These data
feed directly into national locust geographic information systems and can be used rapidly to address
any impending problem.
Unmanned Aerial Vehicle (UAV) technology development for desert locust monitoring and control
began in 2015 and in 2022 the first non-training drone was deployed in the field. Work to improving
the use of drones for surveillance and making the drones available for control has already been
initiated in the western region. Mohamed El Hacen Jaavar, General Director of the National Locust
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