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- Disease: Ascariasis
- Habitat in human: Small intestine
- Diagnosis of infection: Microscopic examination of faeces to detect eggs
Morphological Features
- Comparatively large and plump largest nematode parasite of human
- Colour: Creamy white or pink
- Cuticle has fine circular striations
- Mouth is surrounded by three lips – one dorsal and two ventrolateral
- Oesophagus is club-shaped without posterior bulb
Male
- Size:15-30 cm long
- Posterior end is curved
- Two copulatory spicules of unequal size
Female
- 20-35 cm long – Larger than the males
- Posterior end is straight
- Two ovaries
- Vulva is situated about 1/3rd of body length from anterior end
Magnification X0.5
