Parasites definitions 0.0 / 5 ? Veterinary ScienceParasites definitions UniversityAll boards Created by: PaigeJCCreated on: 23-02-17 20:21 Define parasitism A relationship between two organisms where only one organism benefits from the interaction but this is to the detriment (harm) of the other 1 of 17 Define mutualism An interaction between organisms of different species, where both organisms benefit from the interaction 2 of 17 Define commensalism An interaction between two organisms where only one organism benefits, but this is not to the detriment (harm) of the other 3 of 17 Define facultative parasite A parasite which may survive in the absence of the host (eg. opportunistic pathogens) 4 of 17 Define obligate parasite At some or all stages of life cycle the parasite cannot survive in the absence of the host 5 of 17 Define endoparasite Parasites which live internally in the host 6 of 17 Define ectoparasite Parasites which live on the outer surface of the host 7 of 17 Define definitive host The host in which a parasite reaches maturity and sexual reproduction may occur 8 of 17 Define intermediate host The host that harbors the parasite for a transition period 9 of 17 Define permissive host A host not usually used by parasites but still allows life cycle completion 10 of 17 Define non-permissive host A host in which the parasite cannot complete its life cycle 11 of 17 Define reservoir host Temporary host used in the absence of the natural host 12 of 17 Define paratenic host Host used for transport 13 of 17 Define biological vector A vector needed by the parasite to complete part of its lifecycle 14 of 17 Define mechanical vector A vector which mechanically spreads the parasite but is not used in the parasite's life cycle 15 of 17 Define direct life cycle Parasitic stages occur in/on only one host 16 of 17 Define indirect lifecycle An intermediate host is needed for the development of some stages of the parasite 17 of 17
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