Prevalence of entomophthoralean fungi (Entomophthoromycota) of aphids in relation to developmental stages

MANFRINO ROMINA GUADALUPE; GUTIÉRREZ ALEJANDRA; RUEDA PÁRAMO MANUEL; SALTO CÉSAR EDUARDO; LÓPEZ LASTRA CLAUDIA CRISTINA

PEST MANAGEMENT SCIENCE

JOHN WILEY & SONS LTD

Lugar: LOndres; Año: 2016

1526-498X

BACKGROUND: Transmission of fungal pathogens of aphids may be affected by the host developmental stage. Brassica and Lactuca sativa L. crops were sampled in Santa Fe, Argentina, to determine the prevalence of fungal-diseased aphids andinvestigate the differences between developmental stages of aphids.RESULTS: The fungalpathogens identifiedwere Zoophthoraradicans (Bref.) A. Batko, Pandoraneoaphidis (Remaud.&Hennebert) Humber and Entomophthora planchoniana Cornu. Their prevalence on each cropwas calculated. The numbers of infected aphids were significantly different between the different developmental stages on all crops except B. oleracea var. botrytis L. CONCLUSIONS: The entomophthoralean fungi identified are important mortality factors of aphids on horticultural cropsin Santa Fe. The numbers of infected nymphs and adults were significantly different, nymphs being the most affected developmental stage.