Published September 1, 2018 | Version v1
Journal article Open

Occurrence of Dibothriocephalus latus in European perch from Alpine lakes, an important focus of diphyllobothriosis in Europe

  • 1. Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
  • 2. Muséum d'histoire naturelle, case postale 6434, CH-1211 Geneva 6, Switzerland
  • 3. Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia (BO), Italy
  • 4. Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia. Corresponding author: hromadova@saske.sk

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Description

The broad fish tapeworm Dibothriocephalus latus (syn. Diphyllobothrium latum) is one of the most common causative agents of human diphyllobothriosis, a significant fish-borne parasitic zoonosis. In Europe, the occurrence of D. latus has been repeatedly reported in lakes of the Alps region, the Baltic region, Fennoscandia and Russia. Regular detection of D. latus plerocercoids in fish coming from different subalpine lakes linked with ongoing D. latus infection in humans indicates that Alpine region is a rather specific area from the medical, epidemiological and ecological point of view. Results from the examination of 688 European perch (Perca fluviatilis) from six subalpine lakes in Switzerland, France and northern Italy (Lakes Geneva, Neuchâtel, Biel, Como, Maggiore and Iseo) confirmed the ongoing occurrence of D. latus in the Alps region. The detected prevalence of D. latus in the studied Alpine lakes (2% in Lake Neuchâtel; 37.5% in Lake Biel; 6.4% in Lake Geneva; 22.8% in Lake Iseo [2018]; 12.8% in Lake Iseo [2017]; 15.2% in Lake Como; 16.7% in Lake Maggiore) was compared with previously published data. In addition, the importance of the Alpine lakes region and data on the epidemiology and ecology of D. latus related to subalpine lakes were discussed.

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