Pathogenicity, multiplication and biology of native strains of entomopathogenic nematodes Rhabditida Heterorhabditidae from Lavras, MG Patogenicidade, multiplicacao e biologia de isolados nativos de nematoides entomopatogenicos Rhabditida Heterorhabditidae provenientes de Lavras, MG

Molina Acevedo, J.P.; Moino Jr, A.; Cavalcanti, R.S.; Dolinski, C.; Carvalho, F.A.

Nematologia Brasileira. Junho; 291: 25-30

2005


Accession: 038530267

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Abstract
Intensive use of highly toxic pesticides contributes to environmental damage, making the examination of new ecological tools for pest control necessary. Entomopathogenic nematodes (EPNs) seem to be a prominent alternative agent for biological pest control, but it is still necessary to isolate and explore new species and/or strains, identify them, evaluate their pathogenicity against pests of economic importance and finally incorporate them in Integrated Pest Management programs. The objectives of this work were to evaluate the pathogenicity of native strains of entomopathogenic nematodes isolated from the Universidade Federal de Lavras (UFLA), Lavras, MG; characterize the genus, establish in vivo production in lagartae of G. mellonella and determine the biology of these strains. All the native strains of nematodes (JPM3, JPM3.1 and JPM4) presented virulence above 89%; it was confirmed that those strains belong to the genus Heterorhabditis, with highest multiplication in G. mellonella lagartae. The life cycle has short and long phases, comprising three generations, giving a total of appr. 19 days of development in G. mellonella lagartae.