Lecture 11: Ectoparasites Flashcards
which tick is a 1 host tick: generic and scientific name
otobius megnini = spinose ear tick
soft vs hard ticks: number of nymphal stages, how often/fast do they feed, number of hosts, number of times female lays eggs
soft = more than 2 stages, fast/repeated feeding, multiple hosts, female lays hundreds of eggs many times
hard = 1 nymphal stage, feed once slowly if female, can have 1/2/3 hosts, female lays thousands of eggs once
nidicolous pertains to: hard or soft tick?
soft
soft ticks prefer what kind of environment
arid
hard ticks prefer what kind of environment
humid
bovine babesiosis: general tick genus that causes, clinical sign on histopathology post mortem
rhipicephalus
pink brain
2 host tick cycle
egg hatches –> larvae feeds on host 1 –> remain on host and most to nymph –> nymph feeds on host 1 THEN FALLS OFF –> molts to adult off host –> adults feeds/mates on host 2 THEN DROPS OFF –> lays eggs and dies off host
most hard ticks have what kind of life cycle
3 host tick
3 host tick cycle
egg hatches –> larvae feeds on host 1 –> larvae drops off and molts to nymph off host –> nymph feeds on host 2 then drops off –> nymph molts to adult off host –> adult feeds/mates on host 3 then drops off -=-> lays eggs, dies off host
epizootic bovine abortion: vector, causative agent, cause, generic name, geographic location
ornithodoros coriaceus (soft tick/argasidae)
pajaroellobacter abortibovis
late term abortion, fetal disease, weak calves
foothill abortion
foothill regions of california
argasidae/ornithodoros species are vector for what disease
epizootic bovine abortion
major vector for rocky mountain spotted fever in ARIZONA: scientific and generic name
brown dog tick
rhipicephalus sanguineus
most common tick throughout arizona
brown dog tick
rhipicephalus sanguineus
bovine anaplasmosis: vector
dermacentor andersoni
american canine hepatozoonosis: vector, unique transmission
amblyomma maculatum
gulf coast tick
ingest infected tick OR paratenic host that ingests tick
cytauxzoonosis/cytauxzoon felis: vectors (2)
amblyomma americanum
dermacentor variabilis
tick paralysis is similar to
botulism
4 main flies within nematocera
mosquitos
biting midges
black flies
sand flies
6 flies within brachycera
myiasis flies = bot, blow, flesh
stable flies
horn flies
keds/louse flies
horse flies
deer flies
equine stomach bot: scientific name
gasterophilus intestinalis
leishmaniosis: vector species
sandflies = lutzomyia and phlebotomus
which specific leishmania species is most common in dogs
L. infantum
is leishmaniosis common in cats
no
heartworm disease in dogs vs cats: level of susceptibility, how long adult worms live, how many worms are infected, how common are single sex infections, are microfilaria common (and how long they live), primary organ of concern
dogs = high susceptibility, 5-7 years, 30 worms, unusual, common and live 1-2 years, heart
cats = low susceptibility, 2-4 years, less than 6 worms, common, microfilaria uncommon (1 month), lung
most common ectoparasite of dogs and cats in north america
ctenocephalides felis (cat flea)
red fox with severe pruritus most likely has
sarcoptes scabiei
do male or female ticks cause toxicosis/paralysis
females
argas persicus: type of tick, generic name
soft tick = argasidae
fowl tick or blue bugs
yersinia pestis and dipylidium caninum are vectored by what major ectoparasite
fleas
