Nematodes enhance soil quality in four major areas: regulate the populations of other soil organisms, mineralize nutrients into plant-available forms, provide a food source for other soil organisms and consume disease-causing organisms. 27 дек. 2013 г.
What role do roundworms play in the environment?
Free-living worms are found mainly in freshwater habitats. Some live in soil. They generally feed on bacteria, fungi, protozoans, or decaying organic matter. By breaking down organic matter, they play an important role in the carbon cycle.
What impact do roundworms have?
Roundworms do pose a significant risk to humans. Contact with contaminated soil or dog feces can result in human ingestion and infection. Roundworm eggs may accumulate in significant numbers in the soil where pets deposit feces. Once infected, the worms can cause eye, lung, heart and neurologic signs in people.
What are economic importance of roundworms?
Although some nematodes are beneficial in the manner in which they break down dead or decaying matter, many are of considerable economic importance: a great number are pests of animals and plant crops, while others are the cause of serious illnesses in humans.
How are some roundworms beneficial?
Many species of nematodes are 'free-living', living in soil, sea and freshwater. These feed on bacteria, fungi, protozoans and even other nematodes, and play a very important role in nutrient cycling and release of nutrients for plant growth. Other nematodes attack insects, and help to control insect pests.
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