What Are Nematodes? Nematode Under A Microscope

Nematodes also called roundworms are the worlds most diverse species of animals. Depending on the type, they can occur as parasites in animals and plants or as free-living forms in soil, freshwater, and marine environments.
These recordings are from free-living nematodes from a soil sample.
The free-living nematodes can bring a range of positive effects on the soil and forest. They feed on bacteria and fungus and also have an important role in nutrition recycling for healthier plant growth. Some types even kill insects and can be used as a natural pesticide.
Non-parasitic nematodes are not dangerous for humans or animals.

The parasitic nematodes can destroy plants and farmland. Some types also infest animals and can occur in almost all organs of the body. Some of these worms are known by such common names as hookworm, lungworm, pinworm, threadworm, whipworm, and eelworm. These nematodes can cause a variety of diseases and can be transferred through things like mosquitoes and contaminated water or food.

Fossil findings have suggested that nematodes originated about 354 million years ago.

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Kim Ulvberget
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