Strongyle larvae (Haemonchus contortus)


The picture is of Haemonchus spp. larvae as observed through Foldscope . (The kink in the tail is the important characteristic feature of this parasite.) Females of the specie may lay over 10,000 eggs a day which pass from the host animal in the faeces. After hatching from their eggs, Haemonchus spp larvae molt several times, resulting in an L3 form that is infectious for the animals. The host ingests these larvae when grazing. The L4 larvae, formed after another molt, and adult worms suck blood in the abomasum of the animal, potentially giving rise to anaemia and oedema, which eventually can lead to death. The infection, called haemonchosis, causes large economic losses for farmers around the world, especially for those living in warmer climates.

The video of this alive parasitic larvae as observed through foldscope has also been uploaded in the Media Section of this site.

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