What type of pests are commonly controlled by entomopathogenic nematodes?

Entomopathogenic nematodes are a specific type of nematode known for their role as biological control agents against insect pests. They are parasitic in nature and invade the bodies of their host insects, ultimately leading to the insect's death. These nematodes enter the insect's body through natural openings or by penetrating the cuticle, where they release symbiotic bacteria. The bacteria multiply within the host, killing it and providing nutrients for the nematodes, which then reproduce inside the carcass.

This method of pest control is environmentally friendly and often targets a range of larvae from various insect families, making entomopathogenic nematodes effective in managing agricultural pests. In contrast, the other options—weeds, bacteria, and viruses—do not fall within the particular focus of entomopathogenic nematodes. Weeds are typically managed through herbicides, bacteria involve different biological control agents, and viruses are targeted using specific virological measures. Therefore, recognizing the unique role of entomopathogenic nematodes in controlling insect pests highlights their significance in integrated pest management strategies.