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Trichomonad Disease in Wild Turkeys (Meleagris gallopavo): Pathology and Molecular Characterization of Histomonas, Tetratrichomonas, Tritrichomonas, and Simplicimonas spp.
J Wildl Dis
January 2025
Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, 589 D. W. Brooks Drive, Athens, Georgia 30602, USA.
Article Synopsis
- The Wild Turkey, a significant game bird in North America, has faced health risks due to population declines and diseases like histomonosis caused by the parasite Histomonas meleagridis.
- A study from 2002 to 2023 found that out of 857 turkeys examined, 4% had trichomonad disease, with a variety of trichomonads found, indicating a more complex disease landscape than previously understood.
- Coinfections with other diseases and pathogens were common among affected turkeys, underscoring the necessity for advanced molecular diagnostics to accurately identify the causes of illness.
Avian haemosporidian parasites in captive and free-ranging, wild birds from zoological institutions in Switzerland: Molecular characterization and clinical importance.
Int J Parasitol Parasites Wildl
April 2023
Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, CH-3012, Bern, Switzerland.
Avian haemosporidian parasites are widespread and infect birds from a broad variety of avian families with diverse consequences ranging from subclinical infections to severe and fatal disease. This study aimed to determine the occurrence and diversity of avian haemosporidia including associated clinical signs and pathomorphological lesions in captive and free-ranging, wild birds from two zoos and the near environment in Switzerland. Blood samples from 475 birds, including 230 captive and 245 free-ranging, wild individuals belonging to 42 different avian species from 15 orders were examined for the presence of avian haemosporidian DNA by a one-step multiplex PCR designed to simultaneously detect and discriminate the genera , and by targeting mitochondrial genome sequences.
View Article and Find Full Text PDFFatal toxoplasmosis in Little Penguins (Eudyptula minor) from Penguin Island, Western Australia.
Int J Parasitol Parasites Wildl
April 2022
College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA, Australia.
Routine post mortems of deceased penguins from Penguin Island, Western Australia, found that a temporal cluster of cases presented with characteristic gross and microscopic changes, namely birds in good body condition with hepatomegaly and splenomegaly, multifocal hepatic and splenic necrosis and numerous, 1-2 μm diameter protozoan parasites within the necrotic foci. Electron microscopy identified the protozoa as belonging to the phylum Apicomplexa. Molecular investigations by PCR gave inconsistent results.
View Article and Find Full Text PDFFatal avian malaria in captive Atlantic puffins () in Switzerland.
Int J Parasitol Parasites Wildl
April 2021
Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, CH-3012, Bern, Switzerland.
Avian malaria is a vector-borne disease caused by species which may affect a broad spectrum of bird families worldwide. In most endemic and migratory birds, infections seem not to cause severe harm; however, non-indigenous species kept in human care such as penguins may experience high morbidity and mortality rates. Fatal avian malaria may also occur in other non-native seabirds such as puffins ( spp.
View Article and Find Full Text PDFBLOOD PARASITE INFECTIONS IN STRIGIFORMES AND PSITTACIFORMES SPECIES IN CAPTIVITY WITH A NEW RECORD OF POTENTIAL FATAL BLOOD PARASITE TRANSMISSION TO PARROTS.
J Zoo Wildl Med
January 2021
Department of Evolutionary Ecology, National Museum of Natural Sciences, Consejo Superior de Investigaciones Científicas, Madrid, Spain.
Although parrot species are infrequently infected by hemoparasites in the wild, some fatal infections have been reported in captive individuals. Conversely birds of prey are frequently infected by hemoparasites. In this study, 193 captive birds from Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) centers in Madrid, Spain, belonging to orders Psittaciformes, Accipitriformes, Strigiformes, and Falconiformes, were blood-sampled in search of parasite infections.
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