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Is the human-infecting Diphyllobothrium pacificum a valid species or just a South American population of the Holarctic fish broad tapeworm, D. latum?

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F06%3A00048741" target="_blank" >RIV/60077344:_____/06:00048741 - isvavai.cz</a>

  • Alternative codes found

    RIV/60076658:12310/06:00006813

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Is the human-infecting Diphyllobothrium pacificum a valid species or just a South American population of the Holarctic fish broad tapeworm, D. latum?

  • Original language description

    Using ITS2 gene sequences, the validity of the tapeworm Diphyllobothrium pacificum (Nybelin, 1931), infecting humans on the Pacific coast of South America and in Japan, was assessed. ITS2 sequences of this cestode differed markedly (sequence similarity 79.0?80.2%) from those of the most common human-infecting cestode, the broad fish tapeworm Diphyllobothrium latum (L.), as well as other four species of Diphyllobothrium, including potential human parasites (D. cordatum, D. dendriticum, D. lanceolatum) and two species of Spirometra (sequence similarity 77.5?81.9%). Interspecific sequence similarity between all but one (D. pacificum) species was 86.1?99.6%, whereas individual isolates of D. dendriticum and D. ditremum exhibited intraspecific sequence similarity of 97.0?98.0% and 98.2?99.9%, respectively. Phylogenetic trees constructed from ITS2 sequences show a markedly distant position of D. pacificum from other species analyzed and also indicate the possible paraphyly of Spirometra.

  • Czech name

    Je lidský parazit Diphyllobothrium pacificum platným druhem, nebo pouze jihoamerickou populací holarktické tasemnice D. latum?

  • Czech description

    Použitím sekvencí genu ITS2, byla posouzena platnost druhu tasemnice Diphyllobothrium pacificum (Nybelin, 1931) vyskytující se u lidí na pobřeží Tichého oceánu v Jižní Americe a Japonsku. ITS2 sekvence této tasemnice se výrazně lišily (sekvenční podobnost 79.0?80.2%) od běžné tasemnice člověka, Diphyllobothrium latum (L.), a také od dalších tří druhů rodu Diphyllobothrium potencionálně infekčních pro člověka (D. cordatum, D. dendriticum, D. lanceolatum) a dvou druhů rodu Spirometra (sekvenční podobnost77.5?81.9%). Vnitřní sekvenční podobnosti mezi všemi druhy s výjimkou D. pacificum byla 86.1?99.6%, zatímco jednotlivé izoláty D. dendriticum a D. ditremum představovaly vnitřní sekvenční podobnost 97.0?98.0% a 98.2?99.9%. Fylogenetické stromy sestavenéna sekvencích ITS2 ukazují značně odlišnou pozici D. pacificum od ostatních analyzovaných druhů a zároveň naznačují možnou parafylii rodu Spirometra.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    GJ - Diseases and animal vermin, veterinary medicine

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    American Journal of Tropical Medicine and Hygiene

  • ISSN

    0002-9637

  • e-ISSN

  • Volume of the periodical

    75

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    4

  • Pages from-to

    307-310

  • UT code for WoS article

  • EID of the result in the Scopus database