Science, Space and Technology News 2024
, a new nematode species that kills insects, offering a promising biological control option for crop pests in challenging climates. This discovery adds a valuable tool to sustainable agriculture and pest management, with potential applications in understanding ecological and evolutionary dynamics.species
Hoping to gain a deeper understanding of a different Steinernema species, Dillman’s laboratory requested samples from colleagues in Thailand. “We didanalysis on the samples and realized they weren’t the ones we had requested. Genetically, they didn’t look like anything else that has ever been described,” Dillman said.. They are nearly invisible to the naked eye, about half the width of a human hair and just under 1 millimeter long.
Learning about these worms’ life cycles as an undergraduate is what hooked Dillman on studying them. As juveniles, nematodes live in the soil with sealed mouths, in a state of arrested development. In that stage, they wander the soil looking for insects to infect. Once they find a victim, they enter the mouth or anus and defecate highly pathogenic bacteria.
The researchers are certain that S. adamsi kills insects. They confirmed this by putting some of them in containers with wax moths. “It killed the moths in two days with a very low dose of the worms,” Dillman said.
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