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Prevalence and pathology of helminths of ciconiiform birds from the Brazilian swamplands

Published online by Cambridge University Press:  12 April 2024

R.M. Pinto ,
L.A. Barros ,
L. Tortelly ,
R.F. Teixeira  and
D.C. Gomes
R.M. Pinto*
Affiliation:
Departamento de Helmintologia, Instituto Oswaldo Cruz, Av. Brasil 4365, 21045-900 Rio de Janeiro, RJ, Brazil
L.A. Barros
Affiliation:
Departamento de Produção Animal, Faculdade de Agronomia e Medicina Veterinária, Universidade Federal de Mato Grosso, Av. Fernando Correa da Costa s/n, 78068-900 Cuiabá, MT, Brazil
L. Tortelly
Affiliation:
Departamento de Patologia, Faculdade de Veterinária da Universidade Federal Fluminense, Rua Vital Brazil Filho 64, 24230-340 Niterói, RJ, Brazil
R.F. Teixeira
Affiliation:
Zoológico de São Paulo, Av. Miguel Stefano 4241, 04301-905 Água Funda, SP, Brazil
D.C. Gomes
Affiliation:
Departamento de Helmintologia, Instituto Oswaldo Cruz, Av. Brasil 4365, 21045-900 Rio de Janeiro, RJ, Brazil
*
*Fax: 55 21 2598 4363, Email: [email protected]
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Abstract

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The prevalence of helminths recovered from 108 birds representing eight species of Ciconiiformes from the Brazilian west-central region are presented. The digeneans Ascocotyle (Phagicola) longa, Clinostomum marginatum, Cotylotretus grandis, Ithyoclinostomum dimorphum, the nematodes Contracaecum multipapillatum, Desmidocercella ardeae, Eustrongylides ignotus, and the cestode Valipora mutabilis were identified. Contracaecum multipapillatum was the most prevalent species and E. ignotus the most pathogenic. Gross lesions due to infections with C. multipapillatum were characterized by ulcerative processes and hyperemia of the mucosa whereas those caused by E. ignotus consisted of perforations of the gastric mucosa and fibrotic tubular lesions in the gastric serosa. Histopathological examinations revealed necrosis and mixed leucocyte infiltrations and discrete compression of the mucosa in C. multipapillatum infections. Destruction of the mucosa and submucosa with the presence of fibrous capsules were observed in E. ignotus infections. Reports of accidental human infections, with severe clinical signs induced by these parasites, indicate the necessity of a proper evaluation of the pathogenicity of helminths of aquatic birds.

Type
Review Article
Information
Journal of Helminthology , Volume 78 , Issue 3 , September 2004 , pp. 259 - 264
Copyright
Copyright © Cambridge University Press 2004

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