Fungi: Opportunistics

Question 1

(T/F) Monomorphic mycelial fungi can form into yeast or hyphae.

Answer 1

False - ALWAYS hyphae

Question 2

(T/F) Monomorphic mycelial fungi cause opportunistic infection.

Answer 2

True

Question 3

Monomorphic mycelial fungi respond poorly to ______ anti-fungal treatment.

Answer 3

systemic

Question 4

What are the two major pathogenic diseases of monomorphic mycelial fungi?

Answer 4

Aspergillosis
Mucormycosis

Question 5

Aspergillosis is often caused by A. _______.

Answer 5

fumigatus

Question 6

Which species with Aspergillosis is often associated with brooder pneumonia and green-yellow caseous exudate in lungs?

Answer 6

birds

Question 7

(T/F) If treated early, animals with Aspergillosis have a great prognosis.

Answer 7

False - usually unsuccessful

Question 8

Birds in captivity with Aspergillosis are treated with ________.

Answer 8

itraconazole

Question 9

Match the clinical signs of Aspergillosis to the species:

1. nasal cavity infected, discharge, nares ulceration
2. keratomycosis, guttural pouch mucosa
3. abortions, necrotizing placentitis

Answer 9

1. dog
2. horse
3. cattle

Question 10

What species of fungi typically causes Aspergillosis in dogs?

Answer 10

Aspergillus terreus

Question 11

What species of fungi causes Mucormycosis?

Answer 11

Mucor indicus

Question 12

(T/F) Organisms of the Kingdom Protista have no chitin and don’t form mycelium.

Answer 12

False - no chitin but form mycelium

Question 13

What two fungal-like diseases are caused by protists?

Answer 13

1. Pythiosis
2. Rhinosporidiosis

Question 14

What species of protist causes Pythiosis?

Answer 14

Pythium insidiosum

Question 15

Which species is mainly affected by Pythiosis?

Answer 15

horses

Question 16

(T/F) In cats, Pythiosis can affect the GI tract or become a disseminated infection.

Answer 16

False - dogs (only cutaneous or SQ in cats)

Question 17

(T/F) Antifungals are ineffective in treating Pythiosis.

Answer 17

True

Question 18

Which protist causes Rhinosporidiosis?

Answer 18

Rhinosporidium seerberi

Question 19

Rhinosporidiosis is a chronic granulomatous disease which forms _______ in the nasal cavity.

Answer 19

large polyps

Question 20

How is Rhinosporidiosis commonly transmitted?

Answer 20

stagnant water

Question 21

(T/F) Culturing Rhinosporidium seerberi is a common way to diagnose this disease.

Answer 21

False - cannot culture!

Question 22

What organism causes White-Nose Syndrome in bats?

Answer 22

Pseudogymnoascus destructans

Question 23

What fungal disease in amphibians is linking to decline and possibly extinction?

Answer 23

Chytridiomycosis

Question 24

What organism causes Chytridiomycosis in amphibians?

Answer 24

Batrachochytrium dendrobatidis

Question 25

What organism causes Snake Fungal Dermatitis?

Answer 25

Ophidiomyces ophiodiicola