Interactions between isolates of the entomopathogenic fungus Metarhizium anisopliae and the entomopathogenic nematode Heterorhabditis bacteriophora JPM4 during infection of the sugar cane borer Diatraea saccharalis (Lepidoptera: Pyralidae).
Interactions between the nematode Heterorhabditis bacteriophora isolate JPM4 and the fungus Metarhizium anisopliae, isolates LPP45 and LPP39, were studied during dual infections of Diatraea saccharalis. Mortality, production of infective juveniles (IJs) and production of conidia were evaluated. A positive effect was demonstrated for host mortality in duel infections of JPM4 and LPP39, causing 100% mortality with LT(50) and LT(95) values of 1.8 and 2.8 days, respectively. Higher values were seen when using the nematode or fungi individually. However, a combination of JPM4+LPP39 caused a significant reduction in IJ production. The results show that faster time to death, a moderately virulent fungal isolate could be combined with the nematode, however at the expense of IJ production.
Acevedo
Juan Pablo Molina
JP
Department of Entomology and Plant Pathology, LEF-CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego 2000, CEP 28013-620 Campos dos Goytacazes, RJ, Brazil. juanpamolina@yahoo.com.br
Samuels
Richard Ian
RI
Machado
Inês Ribeiro
IR
Dolinski
Claudia
C
D000818:Animals; D007915:Lepidoptera / Q000382:microbiology* / Q000469:parasitology*; D052981:Metarhizium / Q000472:pathogenicity*; D010572:Pest Control, Biological; D017172:Rhabditoidea / Q000472:pathogenicity*; D031786:Saccharum; D013172:Spores, Fungal / Q000472:pathogenicity; D014774:Virulence