T/CI 069-2022 Technical specifications for controlling locusts using the microsporidian parasite of locusts

Scope

Scope: This document stipulates the principles, control indicators, control techniques, and sampling methods for investigating the control effect of locust microsporidia and its aqueous suspensions. This document is applicable to the use of locust microsporidia and its aqueous suspensions, as well as the investigation of their control effect. Main technical content: 3.13.2 Locust microsporidia (Nosema locustae) are specialized parasitic protozoa of orthopteran insects such as grasshoppers and locusts. 3.33.4 Grasshoppers and locusts belong to the order Orthoptera, family Acrididae. Some species can damage crops, pastures, and trees. 3.53.6 Control principle: After grasshoppers consume food containing locust microsporidia spores, they develop locust microsporidia disease and eventually die. Locust microsporidia can spread horizontally and vertically within grasshopper populations, causing disease outbreaks and controlling locust infestations. 3.73.8 Host spectrum: The species of insects parasitized by locust microsporidia. Note: Currently, there are reports that locust microsporidia parasitizes 144 species of orthopteran insects, the vast majority of which are locusts. Locust microsporidia can infect desert locusts (including the East Asian Desert Locust, Asian Desert Locust, and Tibetan Desert Locust subspecies), as well as Asian subterranean locusts, Chinese rice locusts, yellow-winged bamboo locusts, Italian locusts, broad-winged curved-back locusts, broad-tailed locusts, and wrinkled-knee locusts, among other important pest species. Its host spectrum is broad, but it is very safe for non-target organisms such as humans, livestock, poultry, fish, birds, shrimp, bees, and silkworms. 3.93.10 Control indicators: The specific density of locust populations at which locust microsporidia is used for control to ensure that the locust population density remains below the level of economic loss, generally lower than the control indicators for chemical pestici

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