Podcast
Questions and Answers
How do humans get infected by D. latum?
How do humans get infected by D. latum?
- By ingesting raw or undercooked beef
- By ingesting raw or undercooked pork
- By ingesting raw or undercooked fish (correct)
- By ingesting contaminated water
What is the shape of D. latum eggs?
What is the shape of D. latum eggs?
- Irregular with a hook
- Triangular with a smooth surface
- Oval with a lid-like opening (operculum) (correct)
- Round with no lid-like opening
Where do the embryos emerge from D. latum eggs?
Where do the embryos emerge from D. latum eggs?
- In the fish muscle
- In the first intermediate hosts (copepod crustacea)
- In the human small intestine
- In the freshwater environment (correct)
Which tapeworm has proglottids that are wider than they are long?
Which tapeworm has proglottids that are wider than they are long?
What is the length of D. latum, making it the longest of the tapeworms?
What is the length of D. latum, making it the longest of the tapeworms?
Flashcards
D. latum Infection
D. latum Infection
Ingesting raw or undercooked fish.
D. latum Egg Shape
D. latum Egg Shape
Oval-shaped with a lid-like opening (operculum).
D. latum Embryo Emergence
D. latum Embryo Emergence
In a freshwater environment.
Tapeworm With Wider Proglottids
Tapeworm With Wider Proglottids
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D. latum Length
D. latum Length
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Study Notes
D. latum Infection and Characteristics
- Humans become infected with Diphyllobothrium latum (D. latum) through the consumption of raw or undercooked freshwater fish that contain the larvae.
- D. latum eggs are oval and measure approximately 70-80 micrometers in length and 40-60 micrometers in width, featuring a characteristic operculum at one or both ends.
- The embryos of D. latum emerge from the eggs in freshwater, hatching and then developing into free-swimming larvae called coracidia.
- Diphyllobothrium latum is notable for having proglottids that are wider than they are long, distinguishing it from other tapeworms.
- D. latum can grow up to 10 meters in length, making it the world's longest tapeworm species.
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Description
Test your knowledge about Diphyllobothrium latum, the tapeworm known for its wide proglottids, oval eggs with lid-like opening, and infection through raw fish consumption. Explore the characteristics and life cycle of this longest tapeworm.
