Genetic diversity and pathogenicity of Metarhizium spp. associated with the white grub Phyllophaga capillata (Blanchard) (Coleoptera: Melolonthidae) in a soybean field.
Phyllophaga capillata (Blanchard) was recently described as a soybean pest in Brazil. The occurrence of Metarhizium spp. associated with adults and their pathogenicity were investigated. Natural prevalence of Metarhizium anisopliae was 0.51% in adults collected by light trap. Most Metarhizium isolates were identified as Metarhizium robertsii, although M. anisopliae sensu stricto and a few unidentified isolates were also found. Bioassays with representative isolates selected from different genetic groups resulted in ≤5.6% confirmed mortality against larvae and adults, suggesting low potential of microbial control of this pest by use of indigenous Metarhizium isolates.
EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, W5 Norte, CEP 70770-917, Brasília, DF, Brasil.
R B
RB
Lopes
D A
DA
Souza
C M
CM
Oliveira
M
M
Faria
D000818:Animals; D001517:Coleoptera / Q000502:physiology*; D005260:Female; D014644:Genetic Variation; D008297:Male; D052981:Metarhizium / Q000235:genetics* / Q000472:pathogenicity*; D013025:Glycine max / Q000469:parasitology*