Abstract
Two assays were conducted to assess the influence of infective juveniles (IJs) of Heterorhabditis baujardi LPP7 on the embryogenesis and hatching of Meloidogyne mayaguensis. In the first assay, eggs were incubated in water alone or in the presence of infective juveniles, and completion of embryogenesis was evaluated 14days later. In the second assay, unhatched second-stage juveniles were incubated in distilled water alone or in the presence of infective juveniles. Cumulative hatching was compared at various time intervals. Embryogenesis was not affected, whereas second-stage juveniles hatching was delayed probably because of the eggs permeability to noxious metabolites released by Photorhabdus luminescens, which is the bacterial symbiont of H. baujardi.
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