Parasites And Their Virulence

Parasites and their Virulence ABSTRACT Why do some parasites drubbing the host they depend upon while others coexist with their host? two prime factors determine parasitic virulence: the manner in which the parasite is transmitted, and the evolutionary history of the parasite and its host. Parasites which have join on a new host species pitch to be practically virulent than parasites which have coevolved with their hosts. Parasites which are transmitted horizontally scat to be more virulent than those transmitted vertically.

It has be en assumed that parasite-host interactions necessarily evolve toward lower virulence. This is contradicted by studies in which virulence is redeem or increases over time. A model which encompasses the variability of parasite-host interactions by synthesizing spatial (transmission) and temporal (evolutionary) factors is examined. Lenski and May (1994) and Antia et al. (1993) predict the modulation o...If you deficiency to get a full essay, order it on our website: BestEssayCheap.com

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