Lagenidium giganteum (entomopathogen)

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Lagenidium giganteum (entomopathogen) Couch ex Redhead 2015

This oomycete is a water-borne pathogen of mosquito larvae. Mosquito larvae become infected by the biflagellate zoospores and eventually die, releasing either asexual spores or thick-walled sexual oospores. Oospores can persist in the environment for many years. Both spore forms produce the infectious zoospores which can repeat the infection cycle.

Starting in the late 1990s, L. giganteum was produced commercially under the trade name Laginex™ for mosquito control, see for example Hallmon et al. (2000). However, registration for this product was withdrawn in 2011, following the isolation of L. giganteum from mammals and humans.