0 any of various types of creature with a round body that can live in the bowels of people and some animals, and often cause disease --
It is a tiny roundworm used as the first food for minuscule newly hatched fish, such as the popular pet fish betta.
Although internal parasites weaken their immune systems, well-fed individuals can carry a great many roundworms in their digestive tracts without showing symptoms.
To test this hypothesis, red jungle fowl males were infected with a parasitic roundworm and monitored for growth and developmental changes.
Wolves can carry over 30 roundworm species, though most roundworm infections appear benign, depending on the number of worms and the age of the host.
Overall, an estimated 400 million, 170 million, and 300 million children are infected with roundworm, hookworm, and whipworm, respectively.
It is common for new skunks to have roundworms, which may be too early in development to be detected by fecal tests.
Various other features are found in the group, for instance, tardigrades, pycnogonids and roundworms have a triradiate pharynx.
The foregoing strategies are used, variously, by larval stages of tapeworms, thorny-headed worms, flukes and parasitic roundworms.
