Lec 15: Ectoparasite Flashcards
Most hard ticks submitted to the laboratory belong to the genera ___.
Amblyomma
Dermacentor
Ixodes
Rhipicephalus
Amblyomma spp CN
- Lone star
- Gulf Coast Tick
Medical importance of Amblyomma spp.
Amblyomma americanum
• tularemia
• granulocytic ehrlichiosis
• monocytic ehrlichiosis
Amblyomma maculatum
• tidewater spotted fever
Dermacentor spp. CN
American dog ticks
Medical importance of Dermacentor spp.
Dermacentor variabilis
• Rocky mountain spotted fever
• tularemia
Dermacentor andersoni
• Rocky mountain spotted fever
• tularemia
• Colorado fever virus
Ixodes spp CN
Black-legged deer ticks
Medical importance of Ixodes spp.
Ixodes scapularis & Ixodes pacificus
• Lyme borreliosis
• babesiosis
Brown Dog Tick is the CN of what hard tick?
Rhipicephalus sanguineus
Medical importance of Rhipicephalus sanguineus
Rocky mountain fever
- CN of Sarcoptes scabiei
- Medical importance
- Human itch mite
- Scabies
- CN of Demodex spp.
- Medical importance
- Follicle mite
- Inhabits sebaceous glands & hair follicles (mostly scalp follicles)
- Dust mite is the CN of ___.
- Medical importance
- Dermatophagoides spp.
- Allergies, asthma
How to distinguish Ticks from mites?
Ticks are/have:
• larger
• Haller’s organ (chemosensation)
• Toothed hypostome
The species of Lice that parasitize humans
- Pediculus humanus
- Pthirus pubis
The difference of Pthirus pubis from Pediculus humanus
Pthirus pubis
• wider
• has abdominal protuberance
Pediculus humanus
• longer
Medical importance of Pediculus humanus
Anemia (heavy infestation)
Medical importance of Pthirus pubis
- NOT a vector of disease
- High contagious
Two main Bed Bug spp that feed on humans
- Cimex lectularius
- Cimex hemipterus
- CN of Ctenocephalides spp.
- Intermediate host
- Cat & Dog flea
- Hymenolepis spp.
- CN of Xenopsylla cheopis
- Medical importance
- Oriental Rat Flea
-
Medical importance
• Black plague (Yersinia pestis)
• Hymenolepis spp. carrier
- CN of Pulex irritans
- Medical importance
- Human Flea
- Dipylidium caninum & Hymenolepis spp. carriers
- Species under Tunga
- CN of Tunga spp.
- Medical importance
-
a. Tunga penetrans
b. Tunga trimamillata - Chigoe fleas
- Tungiasis
- CN of Dermatobia hominis
- Clinical presentation
- Human Bot Fly
- Furuncular myiasis
- CN of Cochliomyia hominivorax
- Clinical presentation
- Primary screwworm fly
- Obligatory wound myiasis
- CN of Cordylobia anthropophaga
- Clinical presentation
- skin maggot fly
- Obligatory furuncular myiasis
- CN of Lucilla (Phaenicia) spp.
- Clinical presentation
- Blow fly
- Facultative wound myiasis, aural myiasis
- CN of Sarcophaga spp.
- Clinical presentation
- Flesh fly
- Aural myiasis, facultative wound myiasis
- CN of Gasterophilus spp.
- Clinical presentation
- Horse stomach bot fly
- Migratory furuncular myiasis
- CN of Oestrus ovis
- Clinical presentation
- Sheep Nasal bot fly
- Opthalmomyiasis
- CN of Cuterebra spp.
- Clinical presentation
- Roden and Lagomorph bot fly
- Furuncular myiasis
Pseudoparasite: PSYCHODIDAE
- Species
- CN
- Location
- Feeding
- Psychoda cinerea
-
a. Moth fly
b. Drain fly - Water & organic sludge
- Organic film, bacteria, fungi, algae
Pseudoparasite: SYRPHIDAE
- Species
- CN
- Feeding
- Eristalis tenax
-
a. Rat-tailed maggot
b. Drone fly - Decaying organic matter
Pseudoparasite: STRATIOMYIDAE
- Species
- CN
- Hermetia illucens
- Soldier fly