Adult wormslive in the lumen of the small intestine. A female may produce up to 240,000 eggs per day, which are passed with the feces. Fertile eggs embryonate and become infective after 18 days to several weeks, depending on the environmental conditions (optimum: moist, warm, shaded soil). After infective eggs are swallowed, the larvae hatch, invade the intestinal mucosa, and are carried via the portal, then systemic circulation to the lungs. The larvae mature further in the lungs (10-14 days), penetrate the alveolar walls, ascend the bronchial tree to the throat, and are swallowed. Upon reaching the small intestine, they develop into adult worms. Between 2 and 3 months are required from ingestion of the infective eggs to oviposition by the adult female. Adult worms can live 1 to 2 years.

Ascaris Life Cycle

Ascaris worms arenematodes(another word for roundworms) that need a host to complete their life cycle; the host may be a human but can be other animals as well. Humans become infected and become hosts by ingesting food or water that is contaminated with Ascaris eggs. Once in the body, the eggs hatch into larvae and start burrowing into the mucus lining of the intestines. They pass through the lining and enter the blood stream, where they then travel to the lungs. Larvae spend around two weeks in the lungs maturing before they make their way out of the lungs and into the throat. When they get to the throat, they are usually swallowed and make their way back to the intestines when they finish maturing into adults.

Adult females are capable of producing up to 240,000 eggs. And this isn't in their entire lifetime. This is every single day! The adult female releases her eggs, most of which are then expelled from the body in the fecal material. Some eggs remain in the body, hatch, and proceed through their life cycle. If someone ingests food or water contaminated with eggs, they become infected and enable the worms to continue their life cycle. Once the worms reach maturity, they live between one and two years.

Ascarissuum, the species ofroundwormfound in pigs, in rare cases may also cause human infection. ... Between 2 and 3 months are required from ingestion of the infective eggs to oviposition by the adult female. Adult worms can live 1 to 2 years.

Adult wormslive in the lumen of the small intestine. A female may produce up to 240,000 eggs per day, which are passed with the feces. Fertile eggs embryonate and become infective after 18 days to several weeks, depending on the environmental conditions (optimum: moist, warm, shaded soil). After infective eggs are swallowed, the larvae hatch, invade the intestinal mucosa, and are carried via the portal, then systemic circulation to the lungs. The larvae mature further in the lungs (10-14 days), penetrate the alveolar walls, ascend the bronchial tree to the throat, and are swallowed. Upon reaching the small intestine, they develop into adult worms. Between 2 and 3 months are required from ingestion of the infective eggs to oviposition by the adult female. Adult worms can live 1 to 2 years.