Cestodes And Trematodes Flashcards
What are the two feline tapeworms?
Taenia taeniaformis
Hydatigera taeniaeformis
What is the most common tapeworm found in cats and dogs?
Dipyldium caninum
What is the scientific name for the salmon poisoning fluke of dogs and what part part of the body does it inhabit?
Nanophyetus salmincola and it inhabits the small intestine.
What kind of flukes are the Alaria species in dogs and cats?
Intestinal
What is the scientific name for the lizard fluke and what parts of the body does it inhibit?
Platynosomum fastosum and they inhabit the liver, gallbladder, bile ducts and occasionally the small intestine.
What is the asexual process in which tapeworms form segments called?
Strobilation
The lifecycle of a tapeworm is always?
Indirect
Which two tapeworms can infect dogs if they ingest infected ruminants?
Taenia hydatigena
Taenia ovis
What do flatworms lack?
A body cavity
How are trematodes described?
Unsegmented and leaflike
What is the term used for a psuedotapeworm?
Cotyloda
Dipyldium caninum lifecycle
Adult worm develops in small intestine Proglottids passed in feces Proglottids found on feces and fur Eggs ingested by flea Larvae in flea develops Infected flea ingested by dog
What organs does each proglottid have?
Reproductive
The eggs of the feline tapeworm resemble what species of tapeworm?
Echinococcus
What do cestode eggs must be ingested by and what stage will they develop into?
Intermediate host to develop into the metacestode stage
What is the term used for a true tapeworm?
Eucestodes
Taenia sodium is found in what animal?
Pig
Name the three parts of a tapeworm using the proper terminology
Scolex (head)
Neck
Body
Scientific name for a commonly seen tapeworm with an egg basket?
Dipyldium caninum
What does gravid mean?
Pregnant
Which tapeworm can infect dogs when they ingest infected rabbits or hares?
Taenia pisiformis
What type of agents is nanophyetus salmincola a vector for?
Rickettsial agents
Oval trematode egg with one flat side.
Paragonimus kellicotti
Lung fluke
What is the prepatent period for dipyldium caninum?
14-21 days
What is the common name for a leaf like species of flukes seen in cats?
Lizard poisoning fluke
What species of tapeworm is often overlooked by the client, the vet tech, and the vet due to its size?
Echinococcus
Life cycle of T. pisiformis
Adult in dog intestines Eggs proglottids passed in feces Eggs ingested by rabbit Hexacanth develops to cysticercus stage Definitive host ingests intermediate host Cysticercus matures to adult
What is the intermediate host of Dipylidium caninum?
Flea
What fluke is of the greatest economical importance?
Fasciola hepatica
How many proglottids does the Echinococcus species have and what are they?
3
Immature
Mature
Gravid
