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First Record of Trichobilharzia physellae (Talbot, 1936) in Europe, a Possible Causative Agent of Cercarial Dermatitis.

ABSTRACT: Several species of avian schistosomes are known to cause dermatitis in humans worldwide. In Europe, this applies above all to species of the genus Trichobilharzia. For Austria, a lot of data are available on cercarial dermatitis and on the occurrence of Trichobilharzia, yet species identification of trematodes in most cases is doubtful due to the challenging morphological determination of cercariae. During a survey of trematodes in freshwater snails, we were able to detect a species in the snail Physella acuta (Draparnaud, 1805) hitherto unknown for Austria, Trichobilharzia physellae; this is also the first time this species has been reported in Europe. Species identification was performed by integrative taxonomy combining morphological investigations with molecular genetic analyses. The results show a very close relationship between the parasite found in Austria and North American specimens (similarity found in CO1 ≥99.57%). Therefore, a recent introduction of T. physellae into Europe can be assumed.

SUBMITTER: Helmer N 

PROVIDER: S-EPMC8619437 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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First Record of <i>Trichobilharzia physellae</i> (Talbot, 1936) in Europe, a Possible Causative Agent of Cercarial Dermatitis.

Helmer Nikolaus N   Blatterer Hubert H   Hörweg Christoph C   Reier Susanne S   Sattmann Helmut H   Schindelar Julia J   Szucsich Nikolaus U NU   Haring Elisabeth E  

Pathogens (Basel, Switzerland) 20211112 11

Several species of avian schistosomes are known to cause dermatitis in humans worldwide. In Europe, this applies above all to species of the genus <i>Trichobilharzia</i>. For Austria, a lot of data are available on cercarial dermatitis and on the occurrence of <i>Trichobilharzia</i>, yet species identification of trematodes in most cases is doubtful due to the challenging morphological determination of cercariae. During a survey of trematodes in freshwater snails, we were able to detect a specie  ...[more]

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