Introduction to parasitology

association of 2 species, primarily for food getting on the part of one or both members of the group

association that is beneficial to one partner and the other is neither benefited nor injured

type of commensalism where associations are beneficial to both organisms

symbiotic relationship where one animal (the host) is to some degree injured through activities of the other animal (the parasite). one species lives upon or within the other and has a metabolic dependence on the species