“Agricultural Research Service (ARS) entomologist Jonathan G. Lundgren, while exploring corn fields at night, has found a very different group of predators than the ones that feed during the day. It turns out that these night-time predators have a great appetite for corn rootworms, the most costly pest of corn in the world.
Research on day-active and night-active predatory insects is important for scientists who are developing strategies that maximize the potential of the natural predators in crop pest control.
During his night studies, Lundgren focuses on the top few inches of the soil surface, where rootworm larvae do most of their damage to corn roots. Lundgren works at the ARS North Central Agricultural Research Laboratory in Brookings, S.D.
Lundgren found that one common carabid beetle, Poecilus chalcites, prefers day work, while another common carabid, Cyclotrachelus alternans, works a night shift, from 10 p.m. to 3 a.m. Wolf spiders search for rootworms during the night, while some other spiders hunt during the day.”
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Article By Don Comis (ARS)
Source: USDA (ARS) http://www.ars.usda.gov
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