Survival and Infectivity of Steinernema scapterisci (Nematoda: Steinernematidae) After Contact with Soil Drench Solutions
Abstract
After a nematode application, mole crickets (Orthoptera: Gryllotalpidae: Scapteriscus spp.) are frequently assayed to confirm nematode establishment and infectivity. However, the standard soap flush was suspected of providing false negatives under field conditions. Thus, we examined the effect of several potential flushing solutions on the survival and infectivity of Steinernema scapterisci Nguyen and Smart (Nematoda: Steinernematidae) as well as flushing ability under field conditions. Seventy percent of S. scapterisci died in lemon dish detergent solution, confirming that assays for nematode infection of soap-flushed mole crickets are likely to be inaccurate. When sampling for mole crickets in areas where S. scapterisci has been applied, a potential alternative to the standard soap drench is a dilute permethrin drench.View this article in BioOne
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