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Thysanoessa inermis and T. longicaudata (Euphausiidae) as first intermediate hosts of Anisakis sp. (Nematoda: Ascaridata) in the northern North Sea, to the north of Scotland and at Faroe
Smith, J.W. (1971). Thysanoessa inermis and T. longicaudata (Euphausiidae) as first intermediate hosts of Anisakis sp. (Nematoda: Ascaridata) in the northern North Sea, to the north of Scotland and at Faroe. Nature (Lond.) 234(5330): 478
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836, more
Peer reviewed article  

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Keywords
    Anisakis Dujardin, 1845 [WoRMS]; Ascaridata; Ascaridida [WoRMS]; Euphausia Dana, 1850 [WoRMS]; Nematoda [WoRMS]; Thysanoessa inermis (Krøyer, 1846) [WoRMS]; Thysanoessa longicaudata (Krøyer, 1846) [WoRMS]; Marine

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  • Smith, J.W.

Abstract
    18 of 1, 335 specimens of T. Nermis from 12 localities (from a total of 2, 730 specimens from 27 localities examined) were found to be infected with larval Anisakis, the incidence of infection at individual localities ranging from 0.5 to 4.0%. Three of 335 specimens of T. Longicaudata from 2 localities (from a total of 950 specimens from 7 localities) were infected, the incidence being 0.7 and 1.0%. This is thought to be the first published report of larval Anisakis in T. Longicaudata and also the first published record of them in any invertebrate in these waters. Only 1 larva was found in each infected euphausiid; they morphologically resembled 3rd-stage larvae from fish. Larval Anisakis were not seen in other euphausiids (T. raschii, Nyctiphanes couchii, and Meganyctiphanes norvegica) from the same localities; the only other nematodes seen in the survey were Contracaecum sp.

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