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Helminth parasites of the Eurasian otter Lutra lutra in southwest Europe

Published online by Cambridge University Press:  12 April 2024

J. Torres*
Affiliation:
Laboratori de Parasitologia, Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Avda, Joan XXIII sn, 08028 Barcelona, Spain.
C. Feliu
Affiliation:
Laboratori de Parasitologia, Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona, Avda, Joan XXIII sn, 08028 Barcelona, Spain.
J. Fernández-Morán
Affiliation:
Parc Zoològic de Barcelona, 08005 Barcelona, Spain.
J. Ruíz-Olmo
Affiliation:
Direcció General de Boscos i Biodiversitat, Dr Roux 80, 08017 Barcelona, Spain.
R. Rosoux
Affiliation:
Muséum des Sciences Naturelles, 6, Rue Marcal Proust, 45000 Orleans, France.
M. Santos-Reis
Affiliation:
Centro de Biologia Ambiental, Facultade de Ciências, Universidade de Lisboa, P1749-016 Lisboa, Portugal.
J. Miquel
Affiliation:
Centro de Biologia Ambiental, Facultade de Ciências, Universidade de Lisboa, P1749-016 Lisboa, Portugal.
R. Fons
Affiliation:
Centre d'Écologie Méditerranéenne, Laboratoire Arago, Université Paris VI, 66650 Banyuls-sur-Mer, France.
*
* Fax: (34) 93 402 45 04E-mail: jtorres@ub.edu.

Abstract

The helminth fauna in 109 Eurasian otters (Lutra lutra L.) from France, Portugal and Spain was analysed, together with 56 faecal samples collected in Portugal and 23 fresh stools from otters included in a reintroduction programme. Seven helminth species were found in L. lutra in southwest Europe: Phagicola sp. (Trematoda), Aonchotheca putorii, Eucoleus schvalovoj, Strongyloides lutrae, Anisakis (third stage larvae) and Dirofilaria immitis (Nematoda), and Gigantorhynchus sp. (Acanthocephala). Eucoleus schvalovoj was the dominant species throughout southwest Europe. Strongyloides lutrae was significantly more prevalent in the Iberian Peninsula than in France. Apart from these two dominant nematodes and A. putorii, the other helminth species were incidental parasites of L. lutra in southwest Europe. The helminth fauna of L. lutra in southwest Europe is, in general, poorer than that reported in eastern Europe and in all other aquatic mustelids in southwest Europe. Phagicola specimens are reported for the first time in a non-marine wild carnivore in Europe. The prevalences of E. schvalovoj and S. lutrae obtained by necropsy were higher than those observed by coprological analysis using a formalin-ether concentration method (Ritchie). Nevertheless, the culture of fresh faeces appears to be the best method to study infection of L. lutra by Strongyloides.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2004

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