| Full text | |
| Author(s): |
Ana Carolina Ewbank
[1]
;
Ricardo de Francisco Strefezzi
[2]
;
Carlos Sacristán
[3]
;
Cristiane Kiyomi Miyaji Kolesnikovas
[4]
;
Aryse Martins
[5]
;
Luis Felipe Silva Pereira Mayorga
[6]
;
Ralph Eric Thijl Vanstreels
[7]
;
José Luiz Catão-Dias
[8]
Total Authors: 8
|
| Affiliation: | [1] Universidade de São Paulo. Departamento de Patologia. Laboratório de Patologia Comparada de Animais Selvagens - Brasil
[2] Universidade de São Paulo. Faculdade de Zootecnia e Engenharia de Alimentos. Laboratório de Oncologia Comparada e Translacional - Brasil
[3] Universidade de São Paulo. Departamento de Patologia. Laboratório de Patologia Comparada de Animais Selvagens - Brasil
[4] Associação R3 Animal - Brasil
[5] Universidade Federal do Rio Grande. Museu Oceanográfico Professor Eliézer de Carvalho Rios. Centro de Recuperação de Animais Marinhos - Brasil
[6] Instituto de Pesquisa e Reabilitação de Animais Marinhos - Brasil
[7] Universidade de São Paulo. Departamento de Patologia. Laboratório de Patologia Comparada de Animais Selvagens - Brasil
[8] Universidade de São Paulo. Departamento de Patologia. Laboratório de Patologia Comparada de Animais Selvagens - Brasil
Total Affiliations: 8
|
| Document type: | Journal article |
| Source: | Revista Brasileira de Parasitologia Veterinária; v. 28, n. 1, p. 68-79, 2019-02-21. |
| Abstract | |
Abstract Avian malaria is one of the most important diseases of captive penguins. We employed morphometric techniques to evaluate hepatic hemosiderosis in rehabilitating wild Magellanic penguins (Spheniscus magellanicus) that were negative (n = 9) or naturally infected by different subgenera of Plasmodium spp. (n = 24), according with: Plasmodium subgenera (Haemamoeba, Huffia, Other lineages, and Unidentified lineages), severity of Plasmodium histopathological lesions, and concurrent diseases, age class (juvenile or adult plumage), sex (male, female or not determined), body score (emaciated, thin, good, excellent, not available), molt, presence or absence of oil contamination upon admission, iron supplementation, and rehabilitation center. The percentage of the area occupied by hemosiderin was called ‘Index of Hepatic Hemosiderosis (IHH)’. Plasmodium-positive females presented significantly higher IHH values (17.53 ± 12.95%) than males (7.20 ± 4.25%; p = 0.041). We observed higher levels of congestion (p = 0.0182) and pneumonia (p = 0.0250) severity between Unidentified lineages vs. Huffia. We believe that the hepatic hemosiderosis observed in this study was multifactorial, the result of pathological processes caused by malaria, molting, hemoglobin and myoglobin catabolism during migration, anemia, concomitant diseases, and iron supplementation, all possibly potentiated by decreased liver mass. Further studies are needed to clarify the mechanisms of these hypotheses. (AU) | |
| FAPESP's process: | 09/53956-9 - Study of avian malaria in Magellanic penguins (Spheniscus magellanicus) kept in selected Brazilian coast rehabilitation centers |
| Grantee: | Ralph Eric Thijl Del Val Onoro Vanstreels |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 10/51801-5 - Avian malaria and penguins in Brazil: epidemiological and pathological investigations of a disease with potential risks to avian conservation |
| Grantee: | Jose Luiz Catao Dias |
| Support Opportunities: | Research Projects - Thematic Grants |