Test 2 Flashcards
(73 cards)
What is the main group of ectoparasites?
Arthropods
What are the 2 groups of Arthropods?
Insects and Arachnids
What do Ectoparasites consume?
blood, fluids, or tissues obtained from the host
What may ectoparasites also transmit?
endoparasites, especially blood parasites
What are some examples of insects?
flea, fly, mosquito, lice
What are some examples of arachnids?
ticks and mites
Ectoparasites may also exist in what stages?
immature or larval in the skin of SQ tissues
How may ectoparasite samples be collected?
by direct removal and to skin scraping, cellophane tape technique, plucking hairs or combing the haircoat
What is Ctenocephalides felis?
flea
Ticks are not what?
host specific
What do ticks transmit?
many bacterial, viral, rickettsial and protozoal diseases
Heavy tick infestation may cause what?
severe anemia
Tick paralysis is caused by what?
neurotoxin in the saliva of 12 species of ixodid ticks
Ticks paralysis recovery is rapid after what?
ticks are removed
What are ixodid ticks?
hard ticks
What are the 2 main families of parasitic ticks?
ixodidae and argasidae
What are argasidae ticks?
soft ticks
What are some common hard ticks?
Rhipicephalus sanguineus and Dermacentor variabilis
What is Rhipicephalus sanguineus?
brown dog tick
What is Dermacentor variabilis?
american dog tick
What are the steps in tick removal?
try not to crush, try not to leave mouthparts, wash area carefully with soap, wash hands, watch for any other signs
Ixodus spp. are the principal sources for transmission of what?
Lyme disease
Lyme disease is due to what spirochete?
Borrelia burgdorfen
What does Lyme disease cause?
lameness and fever