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Date: | Mon, 20 Jul 2020 13:02:10 -0400 |
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Looks like it's safe for bees, etc. but could affect crickets & katydids
Nosema locustae is a pathogen of orthopterans that was developed as a microbial control agent of grasshoppers (Henry and Oma 1981, Johnson 1997, Lockwood et al.1999). Its development was in part possible because unlike most other microsporidia, N. locustae has an unusually broad host range. Natural or induced susceptibility to N. locustae has been recorded for as many as 102 species of Orthoptera ... -- An Ultrastructural Study of Nosema locustae (2002)
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Various toxicity tests showed that Nosema locustae does not harm mammals, birds, fish, aquatic invertebrates, or honeybees. No adverse effects to the environment are expected when Nosema locustae is used in pesticide products. (2000)
https://www3.epa.gov/pesticides/chem_search/reg_actions/registration/fs_PC-117001_01-Oct-00.
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EPA received and reviewed a sufficient complement of studies to perform an ecological hazard assessment of N. locustae. These studies show that N. locustae should not have an adverse effect on avian species, aquatic invertebrates or honeybees, on an acute basis. It also is not acutely toxic to and does not cause diseases in freshwater trout.
N. locustae has been tested and studied for 20 years, and has been used in the field since 1980. No adverse effects have been reported during the many years of experience with and environmental release of N. locustae. Considering this use history along with the studies reviewed, EPA can foresee no significant adverse effects on nontarget species or the environment from the registered uses of N. locustae. (1992)
https://www3.epa.gov/pesticides/chem_search/reg_actions/reregistration/fs_PC-117001_1-Sep-92.pdf
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