Roundworm Life Cycle at Life

Roundworm Life Cycle. The female worm will then produce literally thousands of eggs per day, which are shed in the feces into the environment. Ascaris lumbricoides is light yellow to light pink in colour.

Sheep crc) dung stage worm eggs that have passed from the sheep in dung hatch and develop through first (l1) and second (l2) larval stages to become infective larvae (l3). The larva then becomes infective after 18 days to several weeks, depending on the environmental conditions like warmth, moist, and soil region. In general, the life cycle of a human roundworm takes about a year, but this is the case if one individual passes through all these stages.

Serous Cavity Filariasis Life Cycle Photograph by Cdc

The primary larval stage of the roundworm is called rhabditiform larva. Back in the intestines, the larvae finish maturing and begin to mate, laying their first eggs about a week after their return to the intestine, and about four or five weeks after the initial infection. Along with the faeces of the host, these eggs come outside of the host body. Embryo formation begins inside the fertilized egg when it remains within the shell.