Exoparasites and Diseases Flashcards
How are insects classified and give examples?
- Six legs
- Includes fleas, lice and flies
What are Ctenocephalides spp.?
- Fleas
- Zoonotic
What are fleas vectors for?
- Typhus (bacteria)
- Myxomatosis (virus)
- Tapeworm (Helminth)
What are the clinical signs of fleas?
- Pruritis
- Anaemia
- Bald patches/hot spots
- Flea allergy dermatitis (FAD)
- Hypersensitivity
What is the diagnosis for fleas?
- Coat brushing (microscope may see eggs)
- Wet paper test: faeces should stain red when on paper
What is a felico subrostratus?
Biting louse of a cat
What is a trichodectes canis?
Biting louse of a dog
What is a linognathus setosus?
Sucking louse of a dog
How are sucking lice characterised?
Sharp pointed head
How are biting lice characterised?
Wide head
What are the clinical signs of lice?
- Mild irritation
- Hair loss
- Widespread infestation
What can flies cause in rabbits?
Myiasis, which is also known as fly strike
How are arachnids classified and give examples?
- 8 legs
- Includes mites and ticks
What are the different types of mites and how are they characterised?
- Burrowing: short stubby legs
- Crawling: long legs
What are the clinical signs of mites?
- Dermatitis
- Pruritis
- Inflammation
What can mites cause?
- Demodectic and sarcoptic mange
What is demodex?
- Normal skin commensals; burrowing mites
Disease occurs, when numbers multiply
What are the clinical signs of demodex?
- Head lesions
- Alopecia
- Scales and crusting
- Inflammation
What is the diagnosis for demodex?
- Skin scrapes for microscopy
- Hair plucks, as mites line the hair shaft
- Histology
What is the treatment for Demodex?
- Amitraz (Aludex): dips
- Doramectin (Dectomax): Subcutaenous injection
- Invermectin: Injection
What is aarocoptes scabei mange?
- Scabies caused by mites
- From history of fox exposure or infected animals
What is notoedric mange?
- Pruritis disease caused notodres cati mite
- In cats
What are the clinical signs of notoedric mange
- Alopecia
- Scales and crusting, which can becoem thick and yellow/grey in colour
How is sarcoptes diagnosed?
- Deep skin scrapes for microscopy
- Histology
- Serology
