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8/9/2019 Nematode Table2
http://slidepdf.com/reader/full/nematode-table2 1/1
RHABDITIF ORM LARVA (First Stage. Has bulbed
esophagus.) FILARI FORM LARVA (Third Stage. Lacks prominent
bulb in esophagus.) Species Size Genital Primordium Buccal Cavity Size Length of
Esophagus Tip of Tai
Strongyloidesstercoralis 225 m × 16 m.
Range, 200-300 m × 16-20 m.
Prominent. Is anelongate, tapered, orpointed structurelocated along ventral
wall about the body
length.
Short, about 1/3-1/2 as long as thewidth of theanterior end of the
body. 550 m × 20 m.Range, 500-550 m × 20-24 m.
Extendsapproximately 1/2length of body.
Notched.
Hookworm 250 m × 17 m.Range, 200-300 m × 14-
17 m. Inconspicuous. Rarelydistinct. When seen, issmall, located nearerthe tail than that
of Strongyloides. Long.Approximately aslong as the widthof the body.
500 m. Range,500-700 m × 20-
24 m. Extends about 1/41ength of body. Pointed.