Why do locusts change their behaviour?
As Desert Locusts increase in number and become more crowded, they change their behavior from that of acting as an individual (solitarious) insect to that as acting as part of a group (gregarious). The appearance of the locust also changes: solitary adults are brown whereas gregarious adults are pink (immature) and yellow (mature). Up until 1921, it was thought that the Desert Locust was actually two different species of locusts.
As Desert Locusts increase in number and become more crowded, they change their behavior from that of acting as an individual (solitarious) insect to that as acting as part of a group (gregarious). The appearance of the locust also changes: solitary adults are brown whereas gregarious adults are pink (immature) and yellow (mature). Up until 1921, it was thought that the Desert Locust was actually two different species of locusts. • Are there other important species of locusts? Although the Desert Locust is considered to be the most important species of locust due to its ability to migrate over large distances and rapidly increase its numbers, there are several other important species of locusts throughout the world: • African Migratory Locust (Locusta migratoria migratorioides) – Africa; • Oriental Migratory Locust (Locusta migratoria manilensis) – South-East Asia; • Red Locust (Nomadacris septemfasciata) – Eastern Africa; • Brown Locust (Locustana pardalina) – Southern Africa; • Moroc
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