Introduction to vet entom (ppt) Flashcards
first pathogenic protozoan parasite recorded in the Philippines
Trypanosoma evansi
First nematodes recorded by Schneider
- Aucenantha corrolata
- Gnathostoma spinigerum
studied parasites that
caused heart failure
Candido Africa
father of Parasitology
MArcos Tubangui
grandfather of Philippine
Parasitology
Liborio Gomez
animal does not exhibit
outward clinical sign
parasitiasis
animal does produce
signs
parasitosis
Host/species specificity
Associated only with one species of host, or
closely related hosts
Organ specificity
Each parasite species has its predilection site or on the host
Optional Occasional/Periodic Parasite
Parasite that briefly visit their host to
obtain nourishment but not dependent on them
Do not permanently live upon their host but are dependent upon them for
nourishment
Obligate Occasional Parasite
Determinate transitory
Parasitism is limited to stage/s in their life cycle
Permanent parasite
Parasitism extends from the time of hatching of the eggs to the time that the eggs are produced by the adult
Fixed Parasite
Cannot pass spontaneously from one host to the other e.g helminthes
Wander from its usual site
Erratic and abberant Parasite
An anthropoparasite that affects man
Enterobius vermicularis
equally specific parasites
that affects man and animals (example)
Trichinella spiralis
man is essential for the life cycle e.g Taenia in
man
enzoones
parazoonoses
man is just accidentally involved
Require a single host specie to complete the life cycle (example)
Trichuris vulpis
It requires 2 or more host species to complete the life cycle
Heteroxenous parasite
Affects broad range of final hosts
euryxenous parasite
Affects narrow range of final hosts
stenoxenous parasites
harbors sexual, mature, or adult stage. eg. whipworms
final or definitive hosts
intermediate hosts
harbors asexual, immature, or larval stage
Reservoir or alternate hosts
final host that harbors the infection but
show no sign of infection
unnatural host in which parasites are accidentally lodged and transmission is through
ingestion of paratenic host
Transport or Paratenic host
Free living in nature can become
parasitic in certain host
facultative
must lead a parasitic existence
obligatory parasites
pseudoparasite
mistaken to be parasite
From infection until egg is demonstrated
Prepatent period
From egg production by adults until it ceases
patent period
any association between at least two living organisms of different species
symbiosis
member of symbiosis is called
symbiont
both organisms in the symbiotic relationship benefit
mutualism
samples of mutualism
- Ruminant Microflora
- flagellate and wood termite
commensalism
only one symbiont is benefitted although the other neither benefits nor is harmed
Predator - prey
An extremely short-term relationship in which one symbiont benefits at the expense of the other
Phoresis
Smaller member of the symbiotic relationship is mechanically carried about by the larger member
One symbiont (parasite) lives on or within the other member (host) and may cause harm
parasitism
Oviparous
lays undeveloped eggs
Ovoviviparous
lays larvated egg
Larviparous
lays larva