Fungi Flashcards
Are fungi eukaryotic?
Yes
What gives the fungal cell wall its stability?
Chitin
How do fungi reproduce?
Sexual (meiosis) and asexual (mitosis)
What are hyphae?
Basic cell unit of a mould
How is the tubular wall of the hypha strengthened?
Crosswalls/septa (have central pore so cytoplasm can move through)
What is a mycelium?
The network of hyphae which forms the body of the mould
What are the aerial mycelia called?
Conidia or sporangiospores
What is a yeast?
Alternative growth form to the hypha (vaguely circular/ovoid)
How do yeasts reproduce?
Budding
What are dimorphic yeasts?
Yeasts which can produce yeasts and hyphae depending on environmental conditions
What are the Deuteromycota?
Fungi which didn’t fit into the other classifications
How do Deuteromycota reproduce?
Via conidia (aerial spores) - asexually
What are arthrospores?
Conidia formed by simple fragmentation in dermatophytes
What is mycosis?
Fungal infection through fungi living in/on the body
Where are superficial mycoses found?
Epidermis/nails/hair/claws/feathers
Where are subcutaneous mycoses found?
Traumatic inoculation through skin (wounds/bites)
Where are deep mycoses found?
Lungs, deep wounds, endogenous
What are effective treatments of ringwom?
Requires topical (shampoos/washes/sprays) and systemic treatment
What can cause predisposition to fungal infection?
Immune suppression, extremes of age, trauma, exposure to heavy spore loads
What is apergillosis/where can it come from?
Fungal lung infection (conolises alveoli), main source is hay/straw
What is a sign of chronic aspergillosis infection in dogs?
De-pigmentation of the nose
What type of fungus can cause mycotic abortion?
Apergillus
What is candidosis?
Yeasts of normal gut flora, opportunistic infection
What is cryptococcus neoformans/where can it come from?
Deadly opportunistic infection, lives in bird guano (excrement)
Diagnosis of mycotic infection
Direct microscopy
Culture and ID
Serology (antibodies and antigens)
Molecular ID
