Phthiraptera, Siphonaptera, Hemiptera Flashcards
What is the life cycle of Phthiraptera (Lice)
Egg
3nymph stage
Adult
What are the suborders of Phthiraptera?
Ischnocera (Mallophaga)
Anoplura
What are the species of Ischnocera?
Trichodectes canis
Felicia subrostrauts
Damalinia bovis
Damalinia ovis
Common name of trichodectes canis?
Dog biting louse
Dog chewing louse
What are the features of Ischocera?
Biting, chewing lice
Mandible > thorax
Feed on skin, fur, feathers
Host of trichodectes canis?
Dog
Life cycle of trichodectes canis
Female lay eggs > 3 nymph stages -> adults
Require host to finish life cycle
Site of infestation of trichodectes canis?
Hair and skin
Trichodectes canis can vector _______________
D. Caninum (dog tapeworm)
Dog
Pruritus
Hair loss due to scratching
Trichodectes canis
Treatment of trichodectes canis?
avoid contact with brushes, combs, and blankets
MCL
Common name of Felicola subrostratus
Cat biting louse
Host of felicola subrostraus
Cat
ID
Cat Beige/yellow Transverse brown bands Triangular anterior portion of head Small legs
Felicola subrostraus
Site of infection of felicola subrostraus?
Skin, face, pinnate, back
Seen in elderly or chronically ill animals
Long haired breeds
Common name of Damalinia bovis?
Cattle biting louse
Host of Damalinia bovis
Cattle
Site of infestation of Damalinia bovis?
Head, poll, neck, shoulders, rump, tail
What is the life cycle of Damalinia Bovis
Winter favors proliferation
- thick coat
- cattle housed
- parthenogenesis
Summer - low numbers
- thin prelate
- skin surface temp high
- sunlight is leathal
What causes chronic dermatitis in cattle, in large numbers intensive causes irritation a pruritius, sign of malnutrition or chronic disease
Damalinia bovis
Treatment of Damalinia bovis
Ectoparasiticides
MCL
Common name of Damalinia ovis
Biting louse of sheep
Host of Damalinia ovis?
Sheep and goat
Site of infestation of Damalinia ovis?
Wool
What is the most pathogenic lice of sheep causing sheep to lose body condition, damage fleece, and attracts blowflies.
Damalinia ovis
What are the characteristics of Anoplura lice ?
Bloodsucking lice (more pathogenic) Pointed noses Head< thorax Slow moving Clasping to hair shaft Lice of mammals
What species belong to the suborder anoplura ?
Linognathus spp
Solenopotes spp
Haematopinus spp
Common name of Linognathus setosus?
Dog sucking louse
Host of Linognathus setosus
Dog
Pathogenesis and clinical signs of Linognathus setosus?
Heavy infestation - anemia
Loss of body condition and damage to skin
Common name of Linognathus vituli?
Long nosed cattle louse
Host of Linognathus vituli?
Cattle
Site of infestation of Linognathus vituli ?
Dewlap, head, neck
Gregarious -dense isolated clusters
Pathogenesis of Linognathus vituli?
Heavy infestation- pruritus, anemia, and weakness
Sign of malnutrition or chronic disease
Linognathus pedalis and Linognathus ovillus host?
Sheep and goat
What anopluran lice of sheep is found on the lower region of hindlimbs, scrotum, and belly?
Linognathus pedalis
What anopluran lice of sheep os found on the face, ears, cheeks, neck, and body of heavy wool breeds?
Linognathus ovillus
What is the pathogenesis of Linognathus pedalis / Linognathus ovillus?
Anemia
What is the common name of Solenopotes capillatus?
Little blue cattle louse
Host of Solenopotes capillatus?
Cattle
ID
Cattle
Bluish Louse
1.2-1.5mm
Neck, head, shoulders, dewlap, back and tail
Solenopotes capillatus
Common name of Haematopinus eurysternus?
Short nosed cattle louse
Host of Haematopinus eurysternus?
Cattle
ID
Cattle
Dense isolated clusters around head, ears, eyes, and nostrils
Anopluran
Large louse
Haematopinus eurysternus
Short nosed cattle louse
Pathogenesis of Haematopinus eurysternus ?
Anemia
Weight loss
Common name of Haematopinus suis?
Sucking louse of pigs
Host of HAematopinus suis
Pig
Site of infection of Haematopinus suis
Skin folds of neck and jowl
Flanks
Inside of legs
Pathogenesis of Haematopinus suis?
Heavy infestation - restlessness leading to drop of production
Anemia (rare)
Skin damage from scratching and reduces value of hides
What is the most common treatment form anopluran lice?
MCL
Ectoparasiticides
Avoiding contact with brushes, combs, blankets
What are the species of Siphonaptera?
Ctenocephalides felis
Ctenochepalides canis
Echidophagia spp
FLEAS
Host of Ctenocepalides felis?
Dog and cat
Site of infestation of Ctenocephalides felis?
Skin, back, ventral abdomen, and inner thighs
Pathogenesis of Ctenocephalidies felis?
Flea bit allergy or flea allergy dermatitis (FAD)
Vector disease
Treatment and prevention of Ctenocephalides felis?
Insecticides- usually don’t treat all life stages
breaking life cycle
Environment control
- vacuum
- mow lawn and rake clippings/leaves
- foggers, dusting powders, and sprays
Common name of ctenocephalides canis?
Dog flea
Host of ctenocephalidies canis?
Dog, cat, rat, rabbit, fox, and human
Common name of Echidnophaga spp?
Sticktight flea
Host of Echidnophaga spp?
Domestic and wild fowl
Site of infection of Echidnophaga spp?
Head, comb, wattles, and eyes
Pathogenesis and clinical signs of Echidnophaga spp?
Irritation
Blood loss
Anemia
Common name of Cimex spp?
Bedbug
Host of cimex spp?
Nesting bird, human, bat
Life cycle of Cimex spp?
Egg -> nymph (molt 5 times) -> adult
Hide during day
Feed on host at night
Can survive >5months without blood meal
Pathogenesis of Cimex spp?
Bloodsuckers
Allergic reactions to bites
Massive infestation can lead to blood loss