Haemonchus contortus egg

Haemonchus contortus, also known as red stomach worm, wire worm or Barber's pole worm, is very common parasite and one the most pathogenic nematode of ruminants. Adult worms are attached to abomasal mucosa and feed on the blood. Image File history File links Metadata No higher resolution available. ... Image File history File links Metadata No higher resolution available. ... Classes Adenophorea    Subclass Enoplia    Subclass Chromadoria Secernentea    Subclass Rhabditia    Subclass Spiruria    Subclass Diplogasteria The nematodes or roundworms (Phylum Nematoda from Greek (nema): thread + -ode like) are one of the most common phyla of animals, with over 20,000 different described species (over 15,000 are parasitic). ... This article does not adequately cite its references or sources. ... The abomasum is the fourth and final stomach compartment of the stomach in ruminants. ...

Females may lay over 5,000 eggs a day, which are secreted from the animal via the faeces. After hatching from their eggs, H. contortus larvae molt several times, resulting in a L3 form that is infectious for the animals. They can take up these larvae when eating grass leaves. The L4 larvae, formed after another molt, suck blood in the abomasum of the animal, potentially giving rise to anaemia and oedema, which eventually can lead to death.^[1] Rabbit feces are usually 0. ... Larvae are the plural of larva, juvenile form of animals with indirect development. ... Ecdysis is the molting of the cuticula in arthropods and related groups (Ecdysozoa). ... Infection is also the title of an episode of the television series Babylon 5; see Infection (Babylon 5). ... This article discusses the medical condition. ... Edema (BE: oedema, formerly known as dropsy) is swelling of any organ or tissue due to accumulation of excess fluid. ...

The infection, called Haemonchosis, causes large economic losses for farmers around the world, especially for those living in the warmer climates. Antihelminthics are used to combat these, and other, worm infections for a long time, but resistance of the parasites against these chemicals is growing. Farmer spreading grasshopper bait in his alfalfa field. ... Anthelmintics (in the U.S., antihelminthics) are drugs that expel parasitic worms (helminthes) from the body or kill them. ... Antibiotic resistance is the ability of a micro-organism to withstand the effects of an antibiotic. ... A parasite is an organism that lives in or on the living tissue of a host organism at the expense of it. ... A chemical substance is any material substance used in or obtained by a process in chemistry: A chemical compound is a substance consisting of two or more chemical elements that are chemically combined in fixed proportions. ...

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