Ancylostoma brasiliense

Ancylostoma brasiliense Hookworm	Contents	Rev 01/04/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Ancylostoma menu		Ecosystem Functions and Services
	Distribution	Management
Return to Ancylostomatidae Menu	Feeding	References
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Classification

Phylum: Nematoda
Class: Chromadorea
Order: Rhabditida

Superfamily: Ancylostomatoidea

Family: Ancylostomatidae

Ancylostoma brasiliense de Faria, 1910

Morphology and Anatomy:

The ventral margin of the stoma armed by one pair of sharp teeth (Marchiondo et al., 2020).

Males:

Length 7.5-8.5 mm
Spicules 700-1000 um long

Females:

Length 9-10.5 mm
Eggs 55 x 34 um


Female on left, male on right.

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Parasite of cats and dogs in the southern United States and subtropical regions of the world, including Central and South Africa, and Southern Asia (Marchiondo et al., 2020)

Hosts:

Dogs and cats are definitive hosts; hunans may be accidental hosts.

Life Cycle:

Life cycle direct, no intermediate host involved.

Eggs are passed in feces of infected dogs and cats (definitive hosts). Larvae develop in eggs and pass through two molts and hatch in 510 days as the infective L3 (662 um length). Infective larvae are ingested or penetrate the skin of a suitable definitive host.

Infective larvae migrate to the heart, enter the lungs, are coughed up and propelled up the respiratory tract and swallowed. They enter the anterior of the small intestine where they undergo two molts to the adult stages.

The prepatent period is 14-16 days following infection (Marchiondo et al., 2020).

Mice can serve as paratenic hosts.

Filariform larvae (infective stage) of hookworm.

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters