Dictionary > Ancylostoma duodenale

Ancylostoma duodenale

Definition
noun
A hookworm species of humans and regarded as the old world hookworm of man
Supplement
Ancylostoma duodenale is a hookworm species belonging to the family Ancylostomatidae. It is a nematode, which is characterized by having an earthworm-like form but not segmented. It is whitish in color. The species is a parasite of humans. Its typical site of infection is the intestinal wall. It has distinctive two pairs of teeth (or ventral plates) on its buccal cavity that it uses to attach to the wall of the intestine. It feeds on blood and therefore may cause iron deficiency anaemia to its host. Infestation with Ancylostoma spp. is referred to as ancylostomiasis.
The males are 8mm to 11 mm in length whereas the females are 10mm to 13mm long. The males have a copulatory bursa and needle-like spicules with tiny tips whereas the females have a vulva at the posterior end. The infective stage is the larval phase. The larva penetrates the exposed skin and finds its way to the bloodstream to be carried to the lungs. It then breaks into the alveoli to reach the bronchi and trachea where it would be swallowed to reach the small intestine.
This species is widespread in temperate areas, in contrast to the more tropical distribution of the new world hookworm, Necator americanus. It is the only hookworm found in the U.S. It is also abundant in Europe, north Africa, India, China, and southeast Asia.
Scientific classification:

  • Kingdom: Animalia
  • Phylum: Nematoda
  • Class: Secernentea
  • Order: Strongylida
  • Family: Ancylostomatidae
  • Genus: Ancylostoma
  • Species: A. duodenale

See also:

  • hookworm
  • ancylostoma
  • ancylostomiasis
  • ancylostoma dermatitis


    You will also like...

    Biological Energy
    ATP & ADP – Biological Energy

    ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

    Lotic community of algal species
    Lotic Communities & Algae

    Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

    Lights' Effect on Growth
    Lights’ Effect on Growth

    This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

    Disturbance on a still water
    Abiotic Factors – Water Conditions

    A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

    Ecosystem Succession
    Ecosystem Succession

    If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

    Schematic diagram of bacterial lactose operon
    Gene Action – Operon Hypothesis

    Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

    ..