Abstract. Parasitic worms (helminths) frequently have complex life cycles in which they are transmitted trophically between two or more successive hosts. 22 окт. 2014 г.
Do tapeworms have a simple life cycle?
William A. All cestodes cycle through 3 stages—eggs, larvae, and adults. Adults inhabit the intestines of definitive, or final, hosts, which are mammalian carnivores, including humans. Several of the adult tapeworms that infect humans are named after their main intermediate host (the fish, beef, and pork tapeworms).
Do tapeworms have a direct life cycle?
The life cycle of tapeworms typically includes the egg, one free-living larval stage, a procercoid and a plerocercoid in the first and second intermediate host, respectively, and the adult in the definitive host. Fish may serve as second intermediate host, definitive host, or in some species as both.
Which parasite has the most complex life cycle?
Dicrocoelium dendriticum, commonly called the Lancet liver fluke, is a parasitic fluke that displays one of the most complex parasitic life cycles currently known.
What are complex life cycle parasites?
Parasites with complex life cycles are indirectly transmitted from one host species to the next. These heteroxenic parasites need to use multiple host species in sequence to successfully develop and reproduce. Reproduction occurs in the final host in the life cycle, which is called the definitive host.
More useful articles on a similar topic 👇
How quickly does a tapeworm grow?How long is the tapeworm cycle?
