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
What organism causes Snake Fungal Dermatitis?
Ophidiomyces ophiodiicola
