Host specificity is arguably one of the most important properties of a parasite, because it can determine, among other things, whether a parasite can survive the extinction of a host species, whether a parasite has the potential to invade new habitats such as islands, or whether a parasite can become established and spread following its introduction to a new geographical area. Macroparasites of micromammals have received relatively little attention in this regard.
It is important due to many reasons including its relationship with the determine of epidemiology of parasites (causative agents), life cycle, control....
There are several reasons why defining host specificity is important:
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The probability of emergence of new diseases may be greatly influenced by the likelihood that a parasite can shift into new host species.
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The probability of extinction of a parasite species may be directly affected by its degree of host specificity. If a parasite is host specific and its host is rare, it may face a risk of extinction.
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Specialist versus generalist parasites may require very different approaches from the standpoint of control operations. It may be much harder to control a parasite with multiple host species.
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By understanding the molecular basis of host specificity, we can potentially devise new means, such as vaccines or drugs, to control the parasites.
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Studies of host specificity provide essential foundation studies to help us understand the origins of parasite diversity.
the importance because the generalist parasites may require very different approaches from the standpoint of control operations. It may be much harder to control a parasite with multiple host species.