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Necator americanus is a species of hookworm (a type of helminth) commonly known as the New World hookworm. Like other hookworms, it is a member of the phylum Nematoda . It is an obligatory parasitic nematode that lives in the small intestine of human hosts. [ 1 ]
N. americanus is generally smaller than A. duodenale with males usually 5 to 9 mm long and females about 1 cm long. Whereas A. duodenale possesses two pairs of teeth, N. americanus possesses a pair of cutting plates in the buccal capsule. Additionally, the hook shape is much more defined in Necator than in Ancylostoma. [11]
N. americanus is generally smaller than A. duodenale, with males usually being 5 to 9 mm long and females about 10 mm long. Instead of the two pairs of teeth in A. duodenale, N. americanus has a pair of cutting plates in the buccal capsule. Also, the hook is much more defined in Necator americanus. [6]
Necator americanus was first discovered in Brazil and then was found in Texas. Later, it was found to be indigenous in Africa, China, southwest Pacific islands, India, and Southeast Asia. This parasite is a tropical parasite and is the most common species in humans.
There is so much to see and learn at this Florida-based laboratory and aquarium. To start, you can see a whole host of magical marine creatures up close and personal, thanks to its 135,000-gallon ...
The Australian Reptile Park recently recorded its largest male funnel-web spider yet, CNN reported. According to the zoo, which is located north of Syndey, Australia, the spider measures a ...
The largest male white shark ever tagged by the research group OCEARCH was spotted in Florida waters. The shark, named Contender, was first tagged and released by OCEARCH on Jan. 17.
The hookworms, Necator americanus and Ancylostoma duodenale, hatch as first-stage juveniles within the soil and develop to an infective third-stage juvenile.Infection occurs by direct penetration through the skin of the host.