Record of Evlachovaea sp. (Hyphomycetes) on Triatoma sordida in the state of Goiás, Brazil, and its activity against Triatoma infestans (Reduviidae, Triatominae).
A fungal isolate was detected on a dead Triatoma sordida (Stål) collected in a peridomestic area in central Brazil. The fungus belongs to Evlachovaea Borisov and Tarasov, a new genus that was recently described in Russia. The isolate seems to be a third species and the second new and undescribed species from Brazil. The fungus was shown to be active against Triatoma infestans (Klug) third-instar nymphs at a humidity close to saturation. However, activity was reduced at a lower humidity (75%). Values of LC50 varied between 1.1 x 10(5) and 1.5 x 10(4) conidia/cm2 treated surface, 15 and 20 d after fungal application and incubation at humidity close to saturation. This new fungus may have a potential for biological control of peridomestic Chagas' disease vectors during the rainy season.
Luz
Christian
C
Institute of Tropical Medicine and Public Health, Federal University of Goiás, CP 131, 74001-970 Goiânia, Brazil. wolf@iptsp.ufg.br
Rocha
Luiz F N
LF
Humber
Richard A
RA
D000818:Animals; D001938:Brazil; D007303:Insect Vectors / Q000382:microbiology; D003904:Mitosporic Fungi / Q000302:isolation & purification*; D010572:Pest Control, Biological / Q000379:methods*; D012423:Rural Health; D014224:Triatoma / Q000382:microbiology*