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Several other Diphyllobothrium species have been reported to infect humans, but less frequently; they include D. pacificum, D. cordatum. PDF | Twenty cases of Dyphillobothrium pacificum (fish tapeworm) infections were prospectively studied to determine whether this tapeworm is. Abstract. Twenty cases of Dyphillobothrium pacificum (fish tapeworm) infections were prospectively studied to determine whether this tapeworm.

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Notwithstanding uncertain systematics of many taxa, it is unquestionable that besides D. Articles with ‘species’ microformats. De Lamar Lectures, Diphyllobothrium latum and human nutrition, with particular reference to vitamin B12 deficiency. Dupouy-Camet J, Peduzzi R.

Most human infections caused by D. Nevertheless, these small second intermediate hosts can be eaten by larger predator species, e. The species named as Taenia lata by C.


It is a large cestode up to 11 m long and differs from D. The following side effects, in order of severity, have been observed: Gendai Kikaku, Tokyo, Japan. The scolex was not present in this specimen. Exploitation of archived marine nematodes—a hot lysis DNA extraction protocol for molecular studies. A Plerocercoid of D. Herman Diedrich Sporing Potential hazards in cold-smoked fish: Is the human-infecting Diphyllobothrium pacificum a valid species or just a South American population of the Holarctic fish broad tapeworm, D.

The importance of reliable identification of human-infecting species with molecular tools sequences of mitochondrial genes as well as the necessity of epidemiological studies aimed at determining the sources of infections are pointed out. Evidence inferred from molecular data is necessary to confirm previous identifications of plerocercoids from salmoniform fish as being D.


Inside the fish, the larva will migrate to the muscles and develop into a plerocercoid larva that is infective to humans and other animals, which can serve as definitive hosts. Get Email Updates To receive email updates about this page, enter your email address: From Wikipedia, the free encyclopedia. When molecular analysis PCR is made directly from fecal samples, a preliminary concentration of eggs formol-ether concentrationwithout the addition of formalin, is suggested to obtain sufficient amounts of DNA Fasciolopsis buski Fasciolopsiasis Metagonimus yokagawai Metagonimiasis Heterophyes heterophyes Heterophyiasis.

Synonyms are Diphyllobothrium ponticum Delyamure,and D.

Update on the Human Broad Tapeworm (Genus Diphyllobothrium), Including Clinical Relevance

Egg size and diphyllobothrkum as taxonomic criteria in Diphyllobothrium. The first case of D. Infection in humans is usually caused after ingestion of undercook fish infected with the plerocercoid larva.

Molecular methods have been widely used in diagnoses because of their specificity and the possibility of evaluating a large number of samples in a short time.

Many samples are identified automatically as being D.

WoRMS – World Register of Marine Species – Diphyllobothrium pacificum (Nybelin, )

Severity of the disease is known to be directly associated with worm burden and diphyllobothriuum produced by tapeworms Multiplex PCR for differential identification of broad tapeworms Cestoda: Because humans do not generally eat undercooked minnows and similar small freshwater fish, these do not represent an important source of infection.


The first human case of Diplogonoporus balaenopterae Cestoda: The motile coracidium swims and diphylloblthrium potential first intermediate hosts Evidence of Diphyllobothrium spp.

According to Rausch and HilliardD. Rare clinical cases attributed to different species of Diphyllobothrium have been reported from the Middle East, Saudi Arabia, India, Indonesia, Malaysia, Mongolia, and Taiwan 133138519399, Microscopic identification of eggs in the stool is the basis of specific diagnosis. The zoonosis occurs most commonly in countries where the consumption of raw or marinated fish is a frequent practice.

In Far East Russia, D. Marine species of Diphyllobothrium and Diplogonoporus a. Most cases occurred in the Great Lakes region, central Canada Manitobaand Alaska, although human infections elsewhere have been reported.

Am J Trop Med Hyg. Higher risks for urban populations may also arise because of the incentive for exporters to ship fresh nonfrozen fish by air to gain a competitive edge in the market 35 diphylllobothrium, Experimental infection of copepods from four lakes in southern Chile with Diphyllobothrium latum Linnaeus, coracidia.

The scolex attaches to the neck, or proliferative region.