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LA External Parasites
JJC Vet Tech 140
109
Veterinary Medicine
Undergraduate 1
02/26/2014

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Cards

Term
What ectoparasite of poultry is attracted to eyes and can lead to blindness, starvation, anemia, and feather pecking?
Definition
Echidnophaga gallinacea aka "stick tight" flea
Term
What tick is associated with Q-fever?
Definition
Amblyoma americanum aka Lone Star tick
Term
Scientific name for the "winter tick"?
Definition
Dermacentor albictus
Term
What diseases are associated with Dermacentor albictus?
Definition
-myiasis
-anaplasmosis
-St. Louis Encephalitis
Term
Scientific name for American Cattle tick?
Definition
Boophilus annulatis
Term
What tick has been eradicated from the US?
Definition
Boophilus annulatis aka American Cattle Tick aka TX Cattle Fever Tick
Term
What parasites are USDA reportable?
Definition

Boophilus annulatis

Psoroptes cuniculi

Term
What is TX Cattle Fever?
Definition
-protozoan, probably a Babesia species
-slow death, anorexia, anemia
-transmitted by Boophilus annulatis
Term
Diseases associated with Boophilus annulatis?
Definition
-Babesia bigemina
-TX Cattle Fever
-anaplasmosis
Term
Which LA ticks are Ixodids? Which are Argasadids?
Definition
Ixodids (AaDaBa): Amblyoma americanum Dermacentor albictus Boophilus annulatis Argasadids(OmApO): Ornithodoros spp Otobius megnini Argas periscus
Term
Scientific name of Relapsing Fever Tick?
Definition
Ornithodoros spp
Term
Scientific name of Spinose Ear Tick?
Definition
Otobius megnini
Term
What parasite is only found inside the ear?
Definition
Otobius megnini aka spinose ear tick
Term
Scientific name of the fowl tick?
Definition
Argas periscus
Term
What parasite causes "night crazies"?
Definition
Chorioptes aka itchy leg mite
Term
What parasite causes "scaly leg/beak"?
Definition
Cnemidocoptes
Term
How to Dx Cnemidocoptes?
Definition
-scotch tape test on the perches, examine under microscope
-or skin/feather scraping
Term
Chorioptes causes what condition?
Definition
night crazies in horses
Term
Cnemidocoptes causes what condition?
Definition
scaly leg / scaly beak
Term
Mites that affect LA?
Definition
Sarcoptes scabiei
Chorioptes
Cnemidocoptes
Psoroptes cuniculi
Term
What parasite is known as the "scab mite"?
Definition
Psoroptes cuniculi
Term
What parasite spreads quickly in herds and between farms, and is USDA reportable?
Definition
Psoroptes cuniculi
Term
Psoroptes cuniculi feeds on...
Definition
lymph
Term
Psoroptes cuniculi causes....
Definition
scabs, pruritis
Term
How is P. cuniculi spread?
Definition
scabs rub off onto fomites
Term
LA mallophagians?
Definition
Bovicola bovis / ovis / capri / equi
Term
LA anoplurans?
Definition
Heamatopinus suis Linognathus vituli Linognathus pedalis
Term
Name of the gigantic louse that affects pigs?
Definition
Haematopinus suis
Term
Scientific name for the "long nose cattle louse"?
Definition
Linognathus vituli
Term
Scientific name for the "foot louse of sheep"?
Definition
Linognathus pedalis
Term
The only two permanent feeding flies that we care about for this class are:
Definition

horn fly

sheep ked

Term
"Dipterans" means what?
Definition
2 wings
Term
Most insects have __ wings.
Definition
4
Term
Voluntary twitching of muscles to shoo away flies is called the...
Definition
panniculus reflex
Term
Places where flies lay their eggs?
Definition
-manure
-water
-veg matter
Term
What parasite looks like dark rain clouds approaching?
Definition
Simulium spp (buffalo gnats)
Term
Buffalo gnats and black flies lay their eggs in...
Definition
fast moving water
Term
Scientific name for midges?
Definition
Culicoides spp
Term
Culicoides refers to...
Definition
midges, no-see-ums, punkies
Term
Culicoides mainly feed...
Definition
at night
Term
A CVI is required to travel interstate for what disease affecting goats/sheep? What parasite is associated with this disease?
Definition
Blue Tongue - Culicoides
Term
What parasites have "slashing mouthparts"?
Definition
gnats (Simulium) and midges (Culicoides)
Term
What parasite causes Equine Allergic Dermatitis?
Definition
Culicoides (midges)
Term
You can't use water-based insecticides on horses because...
Definition
they sweat it off
Term
Blue Tongue is caused by a ___ carried by ___.
Definition
virus carried by Culicoides
Term
What fly has no wings?
Definition
Sheep ked
Term
What parasite might be mistaken for a tick?
Definition
stick-tight flea (Echidnophaga gallinacea) because it stays in one spot
Term
What parasite might be mistaken for a louse?
Definition
Sheep ked because it's an insect with no wings
Term
How can a ked be a fly if it has no wings?
Definition
It has wings at some point of its life cycle (pupa).
Term
What parasite is associated with "cockle"?
Definition
Melophagus ovinus
Term
What is cockle?
Definition
Wet and part a sheep's wool, the fur/skin will be gross and red from keds' pupa
Term
Lifecycle of sheep ked?
Definition
-males and females mate on host
-eggs laid in skin indent
-larvae hatch, go straight to pupa
-hatch to adults
-entire life cycle on the host!!
Term
Culicoides lays its eggs in...
Definition
slow-moving water
Term
Egg to adult for Melophagas ovinus?
Definition
3-5 weeks
Term
Scientific name for the housefly?
Definition
Musca domestica
Term
Scientific name for the face fly?
Definition
Musca autumnalis
Term
Scientific name for the horn fly?
Definition
Haemato irritans
Term
Haemato irritans and Melophagus ovinus are __ __.
Definition
permanent feeders
Term
The housefly is ___ long.
Definition
5-6mm
Term
The housefly has ___ mouthparts and eats ___.
Definition
spongy, liquids (vomits on matter, sponges up the "soup")
Term
The face fly has ___ mouthparts and eats ___.
Definition

spongy mouthparts

liquids- tears, mucus

Term
The horn fly has ___ mouthparts and eats ___.
Definition
cutting/piercing, blood
Term
What does the housefly do as it eats?
Definition
immediately defecates a little black speck of poop
Term
The housefly lays its eggs in...
Definition
vegetable matter (though it prefers manure)
Term
From egg to adult housefly takes ___.
Definition
10-21 days
Term
How big is the face fly in relation to the housefly?
Definition
slightly bigger, 6-8mm
Term
What fly feeds only in daylight and avoids shade?
Definition
Musca autumnalis (face fly)
Term
The face fly lays its eggs in...
Definition
manure only
Term
From egg to adult face fly takes ___.
Definition
14 days
Term
How big is the horn fly in relation to the housefly?
Definition
half its size at most; 1-3mm
Term
The horn fly lays its eggs in...
Definition
manure only
Term
How often do horn flies feed?
Definition
suck blood 20-30 times/day
Term
What fly might you find 1000s of on one animal at a time?
Definition
horn fly, Haemato irritans
Term
Signs that a herd might have horn flies?
Definition
huddled together, shaking heads, not eating
Term
Regarding insecticides, what does "blooming" mean?
Definition
Body heat brings the insecticide to the surface of the impregnated ear tag, and it spreads via oil glands
Term
If using pour-ons, make sure the specific product is safe to use on...
Definition
dairy cattle
Term
How do feed additives work?
Definition
Capsules coated with resin, scooped on top of feed. Break open in manure, no larvae can hatch and live.
Term
It is important to do what with insecticides?
Definition
switch them up so flies can't build a resistance to them
Term
Scientific name for the stable fly?
Definition
Stomoxys calcitrans
Term
How big is the stable fly in relation to the housefly?
Definition
slightly bigger, 6-8mm
Term
How big are tabanids in relation to the housefly?
Definition
MUCH bigger, 15-20mm
Term
What fly is a vicious biter that is found in the suburbs? Why are they found there?
Definition
Stable fly (Stomoxys calcitrans)
In suburbs because mowed lawn = thatch, also compost, garbage, etc
Term
Stable flies lay their eggs in...
Definition
rotting vegetable matter only
Term
From egg to adult stable fly takes...
Definition
30 days
Term
#1 cause of ear tip lesions in dogs in spring/summer?
Definition
stable fly - Stomoxys calcitrans
Term
What are the Tabanids?
Definition
horse fly, deer fly
Term
Tabanids lay their eggs in...
Definition
still water
Term
What fly tends not to enter buildings?
Definition
Tabanids
Term
What fly is attracted to movement?
Definition
Tabanids
Term
What fly spreads EIA, Anthrax, Anaplasmosis?
Definition
Tabanids (horse fly)
Term
What flies are associated with facultative myiasis?
Definition
bottle/blow fly, American screw worm
Term
Facultative vs obligate myiasis?
Definition
Facultative: fly opportunistically lays eggs in wound, maggots eat necrotic tissue

Obligate: larvae *must* develop in living tissue
Term
How big is a blow fly in relation to the housefly?
Definition
same to twice as big, 8-12mm
Term
What flies are metallic in color?
Definition
bottle/blow fly
Term
Mosquitoes lay their eggs in...
Definition
stagnant water on an egg raft of mucus
Term
Basic life cycle of mosquitoes?
Definition
Egg in H2O -> Wigglers -> Tumblers -> Adult
Term
On a farm, where might you find developing mosquitoes?
Definition
puddles in ruts from farm machinery tires
Term
Scientific name for the heel fly?
Definition
Hypoderma spp
Term
The heel fly is also called...
Definition
cattle grub
Term
How big is the heel fly in relation to the housefly?
Definition
2-3x bigger, 13-15mm
Term
What fly is associated with obligatory myiasis?
Definition
heel fly (Hypoderma spp)
Term
What is "gadding"?
Definition
When cattle scatter off in multiple directions out of fear, rather than stampeding as a herd.
Term
What fly is associated with gadding?
Definition
heel fly (Hypoderma spp)
Term
What fly looks like a bumble bee as an adult, and makes a loud buzzing sound?
Definition
heel fly
Term
Basic life cycle of the heel fly?
Definition
Egg laid on skin. Larvae hatch, penetrate skin and migrate to trachea/spine. Pupa emerge from skin.
Term
How to Tx grubs?
Definition
Use grubicide, but make sure the grubs are not in the trachea or spine when you administer it! Want to kill grubs in the skin.
Term
Scientific name for the American screw worm?
Definition
Cochliomyia hominivorax
Term
What parasite is associated with illegally moved cattle from Mexico?
Definition
American screw worm
Term
What fly undergoes facultative myiasis but has larvae that eat live tissue?
Definition
American screw fly
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