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Parasitoid wasps may be effective tool against lettuce aphids

The lettuce aphid (Nasonovia ribisnigri) is an important pest of lettuce worldwide. Lettuce growers have traditionally used chemicals to control the aphids, but even that can be difficult since the aphids prefer to feed on the lettuce heart leaves. However, there may now be an alternative, according to an article that appears in the journal Environmental Entomology.

Researchers from Aarhus University in Denmark recently evaluated three tiny parasitoid wasps that are commercially available to see if they might be effective against the lettuce aphid. They found that one of the wasps — Aphelinus abdominalis — was effective as a biological control agent, which means growers may have a new, non-chemical tool to help control the aphids.

Click here to read the complete article at entomologytoday.org.