Fungi Flashcards
Why is the classification group Deuteromycetes, not considered a true fungi?
They have lost the ability to reproduce.
Name a disease that is caused by an Ascomycetes fungi?
Aspergillus
Which classification of fungi include mushrooms and toadstools?
Basidiomycocetes
Name the long filaments found in moulds?
Hyphae
Describe the difference between vegetative and fertile hyphae?
Vegetative are the ‘growing part’, fertile are the reproductive part.
Describe asexual reproduction by fragmentation?
Fragments of vegetative hyphae can break off and develop into new individual moulds.
Describe the process of sexual reproduction by yeast?
Haploid cells ‘shmoo’. The shmooing cells then fuse and join their nuclei together to create diploid. The new diploid then begins to bud and form a colony of diploid yeast cells.
What is meant by endogenous infection?
Infected by fungi that already live on the body.
List three routes of infection by fungi?
Skin trauma, GIT, inhalation.
Name the different ways in which a sample can be taken to examine for fungal infection?
Hair sample, crusts, hair/nail.
Name two stains that can be used to aid identification of fungi?
Gram, Wrights, lactophenol.
Name a superficial mycosis that causes 70% of dog fungal infections in dogs?
Micosporum canis/gypseum, tricophytes mentagrophytes.
Name 2 pathogenic yeasts?
Candida albicans, malassezia pachydermititis.
What areas of the body does Aspergillus fumigatus affect?
Nasal chambers, frontal sinuses.
Describe the clinical signs of trichophyton mentagrophytes?
Erect hairs, hair loss, pruritis, silvery scaly healed lesions.
