What damage or harm do ectoparasitic and endoparasitic animals cause?
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Mechanical
Physical damage may be produced in several ways. Feeding parasites may destroy tissue and cause wounds. This is accomplished in the abomasum by Haemonchus contortus and in the small intestine by immature rumen flakes (Paramphistomum cervi). As a result, bleeding occurs from small blood vessels that line the wall of the digestive tract.
Mechanical damage also occurs when parasites cause obstruction. Such obstruction may occur in the small airways of lungs infected by Dictyocaulus filaria. The function of obstructed organs is impaired; pneumonia and lung collapse may be caused by lungworm obstruction. Another example of mechanical damage is the malfunction caused by pressure on the liver or lungs from Echinococcus granulosus hydatid cysts. Tissue under excessive pressure is not well nourished with blood and may become inactive.
Physical damage may be produced in several ways. Feeding parasites may destroy tissue and cause wounds. This is accomplished in the abomasum by Haemonchus contortus and in the small intestine by immature rumen flakes (Paramphistomum cervi). As a result, bleeding occurs from small blood vessels that line the wall of the digestive tract.
Mechanical damage also occurs when parasites cause obstruction. Such obstruction may occur in the small airways of lungs infected by Dictyocaulus filaria. The function of obstructed organs is impaired; pneumonia and lung collapse may be caused by lungworm obstruction. Another example of mechanical damage is the malfunction caused by pressure on the liver or lungs from Echinococcus granulosus hydatid cysts. Tissue under excessive pressure is not well nourished with blood and may become inactive.
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Answer:
Parasitic nutrition. ... Endoparasites are parasites that live inside the body of the host(organism) Example: [Taenia solium], [Ascaris] etc., whereas ectoparasites are parasites that live on the outer surface of the host and generally attach themselves during feeding Example: mosquito, leech, louse, ticks etc.
The ectoparasites discussed in this chapter include insects such as lice, flies, and bedbugs and arachnids such as mites, ticks.
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