Gastrointestinal helminths and related histopathological lesions in black-necked swans Cygnus melancoryphus from the Carlos Anwandter Nature Sanctuary, Southern Chile

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dc.contributor.authorOyarzun Ruiz, Pablo
dc.contributor.authorMuñoz Alvarado, Pamela
dc.contributor.authorParedes Herbach , Enrique
dc.contributor.authorValenzuela Jaramillo, Gastón
dc.contributor.authorRuiz Troemel, Jorge
dc.coverageChile
dc.date2019
dc.date.accessioned2021-04-30T16:47:47Z
dc.date.available2021-04-30T16:47:47Z
dc.description.abstractBlack-necked swans are distributed across South America and face conservation problems in Chile according to data of the State institution SAG. The aim of this study was to identify helminths and to assess associated tissue damage via histopathology. A total of 19,291 parasites were isolated from 21 examined birds; 17 species were identified, including nematodes, flukes, and tapeworms. Of these, 12 were new host records, 13 were reported for the first time in Chile, and 5 were new records for the Neotropical region. Further, the flukes Schistosomatidae gen. sp. and Echinostoma echinatum are of zoonotic concern. Regarding histopathology, an inflammatory response was found along the birds' entire digestive tract. Nevertheless, it is difficult to declare that there is a clear association between such lesions and isolated parasites, as other noxa could be responsible as well. Although in some cases there was an evident association, such inflammatory responses and necrosis were minimal, as occurred with Capillaria, Retinometra, Catatropis, Echinostoma, and Schistosomatidae gen. sp. Nevertheless, Epomidiostomum vogelsangi caused granulomatous injuries, an important inflammatory response, and necrosis, but it always circumscribed to superficial layers of the gizzard. Conversely, Paramonostomum was not associated with an inflammatory response despite a high parasitic load.
dc.identifier.citationRevista Brasileira de Parasitologia Veterinária, Vol. 28, N° 4, 613-624, 2019
dc.identifier.doi10.1590/S1984-29612019063
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3524
dc.language.isoen
dc.publisherColégio Brasileiro de Parasitologia Veterinária
dc.rightsObra bajo licencia Creative Commons Atrución 4.0 Internacional
dc.sourceRevista Brasileira de Parasitologia Veterinária
dc.subjectCisne Cuellinegro
dc.subjectHelminto
dc.subjectZoonosis
dc.subject.englishCygnus melancoryphus
dc.subject.englishHelminths
dc.subject.englishHistopatologia
dc.subject.englishZoonoses
dc.titleGastrointestinal helminths and related histopathological lesions in black-necked swans Cygnus melancoryphus from the Carlos Anwandter Nature Sanctuary, Southern Chile
dc.title.alternativeHelmintos gastrintestinais e lesões histopatológicas relacionadas em cisnes de pescoço negro Cygnus melancoryphus do Santuário da Natureza Carlos Anwandter, Sul do Chile
dc.typeArtículo de Revista
uct.carreraMedicina Veterinaria
uct.catalogadorbmc
uct.comunidadRecursos Naturales
uct.facultadFacultad de Recursos Naturales
uct.indizacionSCIELO
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