title: Regulation of insect populations by protozoa and nematodes.
mesh_terms: D000421:Alcaligenes; D000656:Amoeba; D000818:Animals; D016782:Apicomplexa; D001517:Coleoptera; D009033:Culicidae; D004463:Ecology; D056890:Eukaryota; D006110:Grasshoppers; D007300:Insect Control; D009348:Nematoda; D010572:Pest Control, Biological