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The relationship between predators and their prey is an intricate andcomplicated relationship covering a great area of scientific knowledge This paper willexamine the different relationships between predator and prey focusing on the symbioticrelations between organisms the wide range of defense mechanisms that are utilized byvarious examples of prey and the influence between predators and prey concerningevolution and population structure Symbiosis is the interaction between organisms forming a long termrelationship with each other Many organisms become dependent on others and they need oneanother or one needs the other to survive Symbiotic interactions include forms ofparasitism mutualism and commensalism The first topic of discussion in symbiosis is parasitism Parasitism iswhen the relationship between two animal populations becomes intimate and the individualsof one population use the other population as a source of food and can be located in or onthe host animal or animal of the other populationBoughey 1973 No known organism escapesbeing a victim of parasitismBrum 1989 Parasitism is similar to preditation in the sense that the parasitederives nourishment from the host on which it feeds and the predator derives nourishmentfrom the prey on which it feedsNitecki 1983 Parasitism is different from most normalpredator prey situations because many different parasites can feed off of just one hostbut very few predators can feed on the same prey1973 In parasite-host relationshipsmost commonly the parasite is smaller than the host This would explain why many parasitescan feed off of one single host Another difference in parasite-host relationships is thatnormally the parasite or group of parasites do not kill the host from feeding whereas apredator will kill its prey1983 Efficient parasites will not kill their host atleast until their own life cycle has been completed1973 The ideal situation for aparasite is one in which the host animal can live for a long enough time for the parasiteto reproduce several timesArms 1987 Parasites fall under two different categories according to where on thehost they live Endoparasites are usually
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