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Mycology - Coggle Diagram
Mycology
Dermatophytes
Zoonotic
Transmission
Direct contact with infected hair and scales
Indirectly via fomites
Contagious
Clinical signs
Crusty/scaly skin
Erythema
Circular lesions
Alopecia
Pruritus
Species of fungi that cause ringworm
Microsporum canis
Microsporum gypseum
Trichophyton mentagrophytes
Trichophyton equinum
Treatment
Self limiting
Systemic/topical antifungals
Control and management
Treat environment
Clean with detergent that kills fungi i.e. bleach
Vacuum to remove spores
Warn owners - zoonotic
Spores can survive up to 18 months
Aspergillus
Caused by several species of fungus
Most common =
Aspergillus fumigatus
Opportunistic infection
Found in
Environment
Soil
Bird
Affects air sacs and lungs
Clinical signs
Dyspnoea
Anorexia
Emaciation
Horse
Affects guttural pouch mycosis
Clinical signs
Dysphagia
Dyspnoea
Nasal discharge
Epistaxis
Dogs
Mainly affects dolichochephalic breeds
Clinical signs
Sneezing
Epistaxis
Mucopurulent naslal discharge
Facial swelling
Affects nasal cavities and paranasal sinuses
Treatment
Surgical curettage
Topical treatments
Moulds
2 classification
Septate
Aseptate
Secret enzymes to digest substance then reabsorb into hyphae
Have long filamentous cells = hyphae
Hyphae grow outwards forming a circular mycelium via apical growth
Reproduce via sexual and asexual means
Asexual - mitotic division and spore formation
Malassezia
Malassezia pachydermatis
Yeast that lives on the skin
Opportunistic infection - when already ill and immune system suppressed
Clinical signs
Erythema
Hyperpigmentation
Pruritus
Thickening of skin
Odour
Alopecia
Thick brown discharge from ears
Seborrhoea
Treatment/management
Recurrence/flare ups are common
Treat underlying cause
Antifungal therapies
Medicated shampoos
Ear cleansing agents
Yeast
Yeasts are small
3-4 microns
Asexual reproduction
Budding
Daughter cells are produced directly from parent then detach
Spore formation
Core separates and forms four spores
Spores are resistant and remain dormant