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proglottids of "Diphyllobothrium latum"
proglottids of Diphyllobothrium latum
Scientific classification e
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Cestoda
Order: Diphyllobothriidea
Family: Diphyllobothriidae
Lühe, 1910

Diphyllobothriidea is a family of Cestoda (tapeworms).[1] Members of this family are gut parasites of vertebrates. In most species the definitive hosts are marine or aquatic mammals such as cetaceans and pinnipeds, the first intermediate host usually being a crustacean and the second intermediate a fish. The genus Diphyllobothrium is found as an adult in mammals and fish-eating birds, including the domestic cat. The genus Spirometra tends to have a land-dwelling or semi-aquatic vertebrate as its second intermediate host, with the adults usually occurring in felines.[2]


The World Register of Marine Species lists the following genera:-[1]


  1. ^ a b Bray, Rod (2018). "Diphyllobothriidae". WoRMS. World Register of Marine Species. Retrieved 21 May 2018.
  2. ^ Bowman, Dwight D.; Hendrix, Charles M.; Lindsay, David S.; Barr, Stephen C. (2008). Feline Clinical Parasitology. John Wiley & Sons. p. 185. ISBN 978-0-470-37659-1.