What is the Difference Between Male and Female Ascaris?

The main differences between male and female Ascaris worms are found in their physical appearance, specifically their size and posterior end shape. Ascaris lumbricoides is a large roundworm that parasitizes the human intestine, with the female worms being longer than the males. Here are the key differences:

• Size: Female Ascaris worms are larger and thicker than males, measuring 20-35 cm in length, while males are 15-31 cm long.
• Posterior End Shape: The posterior end of male Ascaris worms is curved ventrally, containing a cloacal aperture and two equal isospicules or penial setae that project through the cloacal aperture. In contrast, the posterior end of female Ascaris worms is straight and pointed.

Both male and female Ascaris worms live in the small intestine of their host and cause the disease Ascariasis. They have a yellowish-white or pinkish color and possess three "lips" at the anterior end of the body.

Comparative Table: Male vs Female Ascaris

The main differences between male and female Ascaris worms are as follows:

Ascaris worms are dioecious, meaning they have separate sexes, and are parasitic nematodes belonging to the phylum Nematoda. They are typically found in the small intestine and can cause a disease called Ascariasis, which may result in symptoms such as multiple vomiting and weight loss.