fungi

Question 1

Micotoxin that is produced by Fusarium spp. the most troublesome toxin is deoxynivalenol. This causes feed refusal syndrome.

Answer 1

Tricothecenes

Question 2

Micotoxin produced by fescue grass, and causes late term abortions, placental thickening, RP etc in horses. In cattle Fescue foot occurs (gangrene of the extremities of cattle)

Answer 2

Ergot

Question 3

What is the name of the endophyte fungus that is responsible for producing Ergot in fescue grass

Answer 3

Neotyphodium coneophialum

Question 4

Micotoxin produced by Penicillium. Primarily nephrotoxic, and can be hepatotoxic

Answer 4

Ochratoxin

Question 5

Micotoxin produced by Fusariums pecies that has estrogenic effects, infertility, anestrus in mature sows

Answer 5

Zearalenone

Question 6

Micotoxin produced by Aspergillus sp. This is hepatotoxic, carcinogenic, and causes hemorrhages.

Answer 6

Aflatoxin

Question 7

Fungal organism causing systemi mycoses, commonly found in feed, and is assoicated with guttural pouch infections in horses

Answer 7

Aspergillus fumigatus

Question 8

This systemic mycotic organism is readily inhaled by dogs and results in a pulmonary infection. Neurologic symptoms ensue

Answer 8

Cryptococcus neoformans

Question 9

This systemic mycotic organism has a predilection for growing in neural tissue.

Answer 9

Crytococcus neoformans

Question 10

This fungus is responsible for causing chronic granulomatous and suppurative infection of humans and domestic animals. This is commonly identified on tracheal washings

Answer 10

Blastomyces dermatitidis

Question 11

This fungi is common in the Mississippi and ohio river valley states

Answer 11

Blastomyces dermatitidis

Question 12

This is the cause of Valley Fever

Answer 12

Coccidioides immitis and Coccidioides posadasii

Question 13

This fungi produces hyphae that become aerosolized and is very dangerous for lab workers

Answer 13

Coccidioides immitis

Question 14

Desert rodents excrete large numbers of the spores in their feces and their burrows in southern California, Arizona, Texas and central america

Answer 14

Coccidioides immitis

Question 15

This dimorphic fungus that commonly infects dogs, and causes pulmonary calcifications. This is endemic in the Mississippi and ohio river valley areas. This is isolated form the soil especially where contaminated with bird droppings.

Answer 15

Histoplasm capsulatum

Question 16

This antigen produced by Histoplasm capsulatum and causes a delayed type hypersensitivity.

Answer 16

Histoplasmin

Question 17

Cause of epizootic lymphangitis in horses and mules

Answer 17

Histoplasma capsulatum var. farciminosum

Question 18

Cause of African farcy in horses and mules

Answer 18

Histoplasma capsulatum var. farciminosum

Question 19

General term used to describe infections by the non septate hyphae organisms. These organisms are capeable of causing a systemic mycoses

Answer 19

Zygomycosis

Question 20

Organisms such as Rhizopus, Mucor, or Absidia are transmitted by:

Answer 20

Traumatic implantation

Question 21

Cutaneous infection caused by a number of dematiaceous fungi. it has been reported from horses and dogs as well as humans

Answer 21

Chromomycosis

Question 22

This fungi produces nodular and ulcerative lesions of the feet and legs with regional granulomatous lymphadenitis (traumatic introduction).

Answer 22

Chromomycosis

Question 23

This fungal organsim causes a localized swollen lesion consistign of granulomas and abscesses which suppurate and drain through sinus tracts. This may involve skin, SQ tissue, fascia and bone

Answer 23

Mycotoma

Question 24

This is the most important yeast. Produces pseudo-hyphae. Produces Clamydospores, and causes candidiasis of the crop

Answer 24

Candida albicans

Question 25

Associated with infections of the skin folds in dogs

Answer 25

Candida albicans

Question 26

This yeast is responsible for otitis externa in dogs and cats

Answer 26

Malassezia pachydermatis

Question 27

This yeast causes chronic infections of the nasal and ocular mucosa of humans, horses, mules etc. Commonly found in Sri Lanka and sourthern US

Answer 27

Rhinosporidium seeberi

Question 28

This dimorphic fungas is commonly found in the environment and enters through skin wounds on the hands, feet, and head of horses and dogs.

Answer 28

Sporothrix schenckii

Question 29

This is not a fungus. This is actually an algae organism that lacks chlorophyll

Answer 29

Prototheca

Question 30

Cause of white nose syndrome

Answer 30

Pseudogymnoascus destructans

Question 31

How is White nose syndrome transmitted from bat to bat?

Answer 31

direct contact.

Question 32

This yeast is commonly confused with columnaris disease. It is found in warm water fish and colonizes the fish eggs

Answer 32

Saprolegnia

Question 33

What is the perfect state name for the dermatophytes?

Answer 33

Arthroderma

Question 34

This is isolated from monkeys primarily

Answer 34

Microsporidium canis var. distortum

Question 35

The common name for a dermatophyte infection of the head, combs and wattles.

Answer 35

Chicken favus

Question 36

Cause of club lamb fungus

Answer 36

Trichophyton verrucosum

Question 37

This fungus infects the nails and skin of humans

Answer 37

Epidermophyton

Question 38

What are the conditions required for mycotoxin production

Answer 38

substrate, moisture, temperature, and oxygen supply