Which species of tapeworms require two intermediate hosts?
For example, Diphyllobothrium has at least two intermediate hosts, a crustacean and then one or more freshwater fish; its definitive host is a mammal. Some cestodes are host-specific, while others are parasites of a wide variety of hosts.
|Cestoda tapeworms and allies Trematoda flukes|
What are the two hosts of the beef tapeworm How are humans infected by this tapeworm?
Humans pass the tapeworm segments and/or eggs in feces and contaminate the soil in areas where sanitation is poor. Taenia eggs can survive in a moist environment and remain infective for days to months. Cows and pigs become infected after feeding in areas that are contaminated with Taenia eggs from human feces.
What are the 2 typical hosts of the pork tapeworm identify them as definitive or intermediate?
It is a tapeworm which has humans as its definitive host and often pigs as intermediate or secondary host. It may be transmitted to pigs through human faeces contaminating their fodder, and back to humans through consumption of uncooked, or under-cooked, pork that contains tapeworm cysts.
What parasite has two intermediate hosts?
Like many other parasites, these trematodes have a three host life cycle involving two intermediate hosts and one definitive host.
What is an intermediate host in microbiology?
1 : a host which is normally used by a parasite in the course of its life cycle and in which it may multiply asexually but not sexually — compare definitive host.
What are two Cestodes for which humans can serve as intermediate hosts?
Humans can serve as both the definitive host and an intermediate host for two species, T. solium and H. nana.
What are the definitive hosts of T Solium and T Saginata?
Humans are the only definitive hosts for Taenia saginata and Taenia solium. When humans ingest cysticerci from an infected intermediate host, the cysts attach to the small intestine by their scolex, ultimately becoming adult tapeworms that can reside in the intestine for years.
What is the causative agent of tapeworm?
Parasites – Taeniasis
Taeniasis in humans is a parasitic infection caused by the tapeworm species Taenia saginata (beef tapeworm), Taenia solium (pork tapeworm), and Taenia asiatica (Asian tapeworm). Humans can become infected with these tapeworms by eating raw or undercooked beef (T. saginata) or pork (T.