title: Biocontrol potential of the entomogenous fungi Beauveria bassiana and Metarhizium anisopliae for tsetse flies (Glossina spp.) at developmental sites.
abstract: Spores of two entomogenous fungi, Beauveria bassiana and Metarhizium anisopliae, were mixed with sterile sand at two different concentrations (1.0 and 0.5 g/liter) and larvae of tsetse flies Glossina morsitans morsitans allowed to pupate in it, simulating field larviposition sites. One gram weight of B. bassiana-sand mixture was estimated to contain 1.4 x 10(6) spores/g and that of M. anisopliae-sand mixture 2.3 x 10(6) spores/g. Adult tsetse emerging from pupae in sand-spore mixtures suffered heavy mortalities 2-10 days postemergence. The highest mortality recorded at 1.0 g/liter was 97% for B. bassiana and 80% for M. anisopliae. Lower spore concentrations produced lower mortalities. Possibilities of biocontrol of tsetse in the field using mycopesticides at breeding sites are discussed.
authors.affiliation: International Centre of Insect Physiology & Ecology (ICIPE), Nairobi, Kenya.
authors.forename: G P
authors.initials: GP
authors.lastname: Kaaya
authors.forename: D M
authors.initials: DM
authors.lastname: Munyinyi
mesh_terms: D000818:Animals; D007814:Larva; D003904:Mitosporic Fungi; D010572:Pest Control, Biological; D011679:Pupa; D014370:Tsetse Flies / Q000382:microbiology*