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Haemonchus contortus, also known as the barber's pole worm, is a very common parasite and one of the most pathogenic nematodes of ruminants. Adult worms attach to abomasal mucosa and feed on the blood. This parasite is responsible for anemia, oedema, and death of infected sheep and goats, mainly during summer in warm, humid climates. [2]
By way of example, a parasite that reproduces in an intermediate host may require, as part of their life cycle, that the intermediate host be eaten by a predator at a higher trophic level, and some parasites are capable of altering the behavior of the intermediate host to make such predation more likely; [1] [2] a mechanism that has been called ...
The definitive host of this parasite are dogs and the intermediate host are most commonly sheep, however, cattle, horses, pigs, goats, and camels are also potential intermediate hosts. [5] Humans can also be an intermediate host for E. granulosus , however this is uncommon and therefore humans are considered an aberrant intermediate host.
The final larval stage is completed with the larvae attached to the mucosa of the horse's stomach. When ready to pupate the larvae detach and are voided in the horse's feces. Another example is Dermatobia hominis, torsalo-fly, which is an important parasite of cattle, and sometimes humans, in tropical regions of South America.
Disease ecology is a sub-discipline of ecology concerned with the mechanisms, patterns, and effects of host-pathogen interactions, particularly those of infectious diseases. [1] For example, it examines how parasites spread through and influence wildlife populations and communities.
Dictyocaulus viviparus is the most common lungworm of cattle; the infection is also known as husk or parasitic bronchitis.Although classified as the same parasite, some people believe that the D. viviparus of deer and elk should be reclassified as a different species, including D. eckertii in New Zealand.
External parasites of primary concern from an economic perspective are biting flies, grubs, lice and ticks. Nuisance flies such as house flies and face flies, can affect cattle to a lesser degree.
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 December 2024. Relationship between species where one organism lives on or in another organism, causing it harm "Parasite" redirects here. For other uses, see Parasite (disambiguation). A fish parasite, the isopod Cymothoa exigua, replacing the tongue of a Lithognathus Parasitism is a close ...