Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa
This study presents the first detection of Taenia omissa metacestodes in guanaco (Lama guanicoe) within the Chilean Patagonia, marking the southernmost record of natural infection in an intermediate host on the continent. Taenia omissa was found in the continental part of the Magallanes region where...
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Cambridge University Press
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| Series: | Parasitology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0031182024001501/type/journal_article |
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| author | Cristian A. Alvarez Rojas Juan Francisco Alvarez Juliana Iglesias Anson V. Koehler Cristian Bonacic |
| author_facet | Cristian A. Alvarez Rojas Juan Francisco Alvarez Juliana Iglesias Anson V. Koehler Cristian Bonacic |
| author_sort | Cristian A. Alvarez Rojas |
| collection | DOAJ |
| description | This study presents the first detection of Taenia omissa metacestodes in guanaco (Lama guanicoe) within the Chilean Patagonia, marking the southernmost record of natural infection in an intermediate host on the continent. Taenia omissa was found in the continental part of the Magallanes region where the top predators are pumas (Puma concolor). Conversely, all metacestodes found in guanacos collected from Tierra del Fuego Island, where no pumas exist, were identified solely as Echinococcus granulosus sensu stricto. Additionally, this research highlights a tissue preference of T. omissa for liver, contrasting with E. granulosus, which predominantly affects the lungs in guanacos. We also report the infection of T. pisiformis in 1 guanaco. Our findings emphasize the need for accurate identification of metacestodes during meat inspection in an area where T. omissa and E. granulosus overlap. This research also contributes to increase the knowledge of parasite–host dynamics in wildlife and underscores the importance of considering broader spectrum intermediate hosts in the epidemiology of parasitic infections. |
| format | Article |
| id | doaj-art-13a9d0ffcef844efa10fce4a15c3b2ac |
| institution | Kabale University |
| issn | 0031-1820 1469-8161 |
| language | English |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Parasitology |
| spelling | doaj-art-13a9d0ffcef844efa10fce4a15c3b2ac2025-01-22T06:41:07ZengCambridge University PressParasitology0031-18201469-81611710.1017/S0031182024001501Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissaCristian A. Alvarez Rojas0https://orcid.org/0000-0002-8069-7607Juan Francisco Alvarez1Juliana Iglesias2Anson V. Koehler3https://orcid.org/0000-0001-8330-6416Cristian Bonacic4Escuela de Medicina Veterinaria, Facultad de Agronomía y Sistemas Naturales, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, ChileServicio Agrícola y Ganadero, Región de Magallanes, ChileEscuela de Medicina Veterinaria, Facultad de Agronomía y Sistemas Naturales, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, ChileFaculty of Science, The University of Melbourne, Parkville, VIC 3010, AustraliaDepartamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía y Sistemas Naturales, Pontificia Universidad Católica de Chile, Santiago, ChileThis study presents the first detection of Taenia omissa metacestodes in guanaco (Lama guanicoe) within the Chilean Patagonia, marking the southernmost record of natural infection in an intermediate host on the continent. Taenia omissa was found in the continental part of the Magallanes region where the top predators are pumas (Puma concolor). Conversely, all metacestodes found in guanacos collected from Tierra del Fuego Island, where no pumas exist, were identified solely as Echinococcus granulosus sensu stricto. Additionally, this research highlights a tissue preference of T. omissa for liver, contrasting with E. granulosus, which predominantly affects the lungs in guanacos. We also report the infection of T. pisiformis in 1 guanaco. Our findings emphasize the need for accurate identification of metacestodes during meat inspection in an area where T. omissa and E. granulosus overlap. This research also contributes to increase the knowledge of parasite–host dynamics in wildlife and underscores the importance of considering broader spectrum intermediate hosts in the epidemiology of parasitic infections.https://www.cambridge.org/core/product/identifier/S0031182024001501/type/journal_articleChileco-infectionEchinococcus granulosusguanacoPatagoniaTaenia omissa |
| spellingShingle | Cristian A. Alvarez Rojas Juan Francisco Alvarez Juliana Iglesias Anson V. Koehler Cristian Bonacic Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa Parasitology Chile co-infection Echinococcus granulosus guanaco Patagonia Taenia omissa |
| title | Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa |
| title_full | Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa |
| title_fullStr | Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa |
| title_full_unstemmed | Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa |
| title_short | Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa |
| title_sort | prevalence study of echinococcus granulosus in guanaco lama guanicoe from the chilean patagonia unexpectedly reveals the southernmost limit of taenia omissa |
| topic | Chile co-infection Echinococcus granulosus guanaco Patagonia Taenia omissa |
| url | https://www.cambridge.org/core/product/identifier/S0031182024001501/type/journal_article |
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