Types of Parasites and Hosts Flashcards
is one which the parasite attains sexual maturity
Definitive or final host
can be classified based on their role in the life cycle of the parasite
Types of hosts
for egg to larvae stage
Intermediate stage
serve as “dumps” for non-mature stages of a parasite in which they can accumulate in high numbers
Paratenic hosts
parasite does not develop further to later stages
Paratenic or transport host
one that is infected by a parasite, and which serves as a source of infection for humans or another species
Reservoir host
Difference between Paratenic and Reservoir
- no development takes place in paratenic hosts,whereas in reservoir host development and multiplication takes place
- reservoir host is a primary host host, whereas paraatenic host serves as ‘dumps” for non-mature stages of a parasite which they can accumulate in high numbers
is one that, though infected, is not necessary for the survival development of the parasite
Incidental or Accidental host
a host represents a patch of habitat that provides metabolic resources or a protected environment in which to remain dormant
Parasites
Microscopic Parasites/ Classification of Parasites
- parasitic diseases are long term diseases
- types of parasites are often described according to their movement and development
(phone) - to a parasite, a host represents a patch of habitat that provides metabolic resources or a protected environment in which to remain dormant. Since these resources are finite, and the host itself
a parasite living inside the body (internal organs or tissues) of host
Endoparasite
live outside the body of the host; sicaly on the surface of the body (skin or fur)
Ectoparasite
requires a host at some stage of their life cycle to complete their development and propagate their species
Obligate parasite or holoparasite
may exist in a free-living state or may become parasitic when the need arise (amoeba)
Facultative parasite
infection time diagnostic stage - pseudopodia- false feet protozoa - water borne
Infective stage
parasites that establishes itself in a host where it does not ordinarily live
Accidental Incidental parasite
a parasite found in an organ that is not its usual habitat
Erratic parasite
a parasite it is one that wanders in to an organ in which it is not usually found
Erratic parasite
lives or on he body of the host for its entire life
Permanent parasite
lives in or on the host on a short period of time
Temporary parasite
a free-living organism that passes through the digestive tract without infecting the host
Spurious parasite
what are the mode of transmission of contaminated soil?
mouth or through ingestion (oral-route transmission)
what are the mode of transmission of contaminated food?
via mouth or through (foodborne)
what are the mode of transmission of contaminated water?
through ingestion (waterborne) or skin penetration of parasite upon exposure of the host
