L11: Lab 2 Flashcards
hard ticks (ixodid) have a ____ stage life cycle
4 stages
egg
larva (6 legs)
nymph (8 legs)
adults (8 legs)
Idoxes spp. have a _______ scutum, meaning…
inornate
meaning it lacks white, silver or gray coloration
Ixodes spp. have a ______ basis capituli and ______ palps
rectangular
long
what species of Ixodes is this
Ixodes scapularis
= eastern black legged deer tick
what species of Ixodes is this
Ixodes pacificus = western black legged tick
Rhipicephalus spp. have a _____ scutum, a _____ basis capituli and _____ palps
inornate scutum
hexagonal basis capituli
short palps
what is the only member of the genus Rhipicephalus that occurs in North America
Rhipicephalus sanguineus
brown dog tick
based on the shape of the this basis capituli (and the short palps), what species of tick is this
Dermacentor b/c rectangular basis capituli and short palps
based on the shape of the this basis capituli (and the short palps), what species of tick is this
Rhipicephalus b/c hexagonal basis capituli
what tick is this, how can you tell
Rhipicephalus sanguineus
inornate scutum
hexagonal basis capituli
short palps
what tick is this, how can you tell?
Dermacentor spp.
ornate scutum
rectangular basis capituli
short palps
what tick is this, how can you tell?
Ambylomma spp.
ornate scutum
rectangular basis capituli
long palps
what are the 4 common tick genera found in the USA
- Ambylomma
- Dermacentor
- Ixodes
- Rhipicephalus
what genera of tick have an ornate scutum
Ambylomma
Dermacentor
what genera of ticks have an inornate scutum
Ixodes
Rhipicephalus
how can you tell Ambylomma genera apart from Dermacentor
Ambylomma have long palps, whereas Dermacentor have short ones
How can you tell Ixodes apart from Rhipicephalus
Ixodes have long palps while Rhipicephalus have short ones
compared to hard ticks, soft (argasid) ticks are less commonly associated w/ _______ and transmit fewer ______
domestic animals
infectious agents
do soft (asgarid) ticks have a scutum
no
explain the soft tick life cycle
6 legged larval stage
multiple 8 legged nymphal stages
in what species of soft ticks are only the larvae and nymph stages parasitic?
Otobuis
the Argas spp. genera have a well defined __________ that the other 2 soft tick genera found in the US lack (Ornithodoros, Otobius)
lateral suture
what is this tick, where is it found in the US
Argas persicus
found along Gulf Coast and Mexican border
genera of tick that has a thick rounded body margin and a toothed hypostome
Ornithodroros spp.