Fungi: Opportunistics Flashcards
(T/F) Monomorphic mycelial fungi can form into yeast or hyphae.
False - ALWAYS hyphae
(T/F) Monomorphic mycelial fungi cause opportunistic infection.
True
Monomorphic mycelial fungi respond poorly to ______ anti-fungal treatment.
systemic
What are the two major pathogenic diseases of monomorphic mycelial fungi?
Aspergillosis
Mucormycosis
Aspergillosis is often caused by A. _______.
fumigatus
Which species with Aspergillosis is often associated with brooder pneumonia and green-yellow caseous exudate in lungs?
birds
(T/F) If treated early, animals with Aspergillosis have a great prognosis.
False - usually unsuccessful
Birds in captivity with Aspergillosis are treated with ________.
itraconazole
Match the clinical signs of Aspergillosis to the species:
- nasal cavity infected, discharge, nares ulceration
- keratomycosis, guttural pouch mucosa
- abortions, necrotizing placentitis
- dog
- horse
- cattle
What species of fungi typically causes Aspergillosis in dogs?
Aspergillus terreus
What species of fungi causes Mucormycosis?
Mucor indicus
(T/F) Organisms of the Kingdom Protista have no chitin and don’t form mycelium.
False - no chitin but form mycelium
What two fungal-like diseases are caused by protists?
- Pythiosis
- Rhinosporidiosis
What species of protist causes Pythiosis?
Pythium insidiosum
Which species is mainly affected by Pythiosis?
horses
(T/F) In cats, Pythiosis can affect the GI tract or become a disseminated infection.
False - dogs (only cutaneous or SQ in cats)
(T/F) Antifungals are ineffective in treating Pythiosis.
True
Which protist causes Rhinosporidiosis?
Rhinosporidium seerberi
Rhinosporidiosis is a chronic granulomatous disease which forms _______ in the nasal cavity.
large polyps
How is Rhinosporidiosis commonly transmitted?
stagnant water
(T/F) Culturing Rhinosporidium seerberi is a common way to diagnose this disease.
False - cannot culture!
What organism causes White-Nose Syndrome in bats?
Pseudogymnoascus destructans
What fungal disease in amphibians is linking to decline and possibly extinction?
Chytridiomycosis
What organism causes Chytridiomycosis in amphibians?
Batrachochytrium dendrobatidis
