Parasites & Pathogens

Question 1

Role of Ctenocephalides felis in the transfer of Feline Infectious Enteritis.

Answer 1

The flea takes a blood meal from the infected host

Jumps onto the next host to feed.

Transfers the FIE through the saliva when it takes it’s next blood meal from the uninfected host

Question 2

Role of Ctenocephalides felis in the transfer of Diplydium caninum

Answer 2

Segments from DC passed in faeces

Eggs released in environment

Eaten by larval flea and cysticeroid develops as flea develops

Question 3

describe how Toxoplasma gondii reproduces

Answer 3

The final host is the cat.

Oocysts are passed in the faeces of the cat and eaten by an Intermediate host (mouse etc)

These reproduce asexually in the intestine of the Intermediate host.

They can travel to the tissues and divide to form tachyzoites then bradyzoites.

These remain in the Intermediate hosts tissue until the Intermediate host is eaten by the cat.