Abstract
Monoxenic cultures of the nematode, Steinernema feltiae, were carried out on two complex liquid media: P1, mainly soybean flour/egg yolk/yeast extract, and P2, mainly egg yolk/yeast extract. Up to 140 000–200 000 nematodes ml−1 were produced within 7 days, and more than 95% of the final population was in the infective juvenile stage. The total nematode concentration growth curve had a sigmoidal shape. Nematode population growth kinetics were modelled using a re-parameterised Gompertz model. Yeast extract concentration appeared to be a key factor for obtaining high nematode concentrations.
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