Abstract The evolution of host–parasite interactions as host lineages colonize new geographic regions and diversify over evolutionary time is poorly understood. To assess whether haemosporidian parasite diversity has changed during the diversification an avian host, we surveyed prevalence blood (genera Plasmodium, Haemoproteus, Leucocytozoon) across range songbird genus Junco, which diversified...

Hemoparasitism is known to vary according the presence of vectors and hosts, hematological examination can be a useful tool for early diagnosis in avian medicine, contributing monitoring conservation bird populations. In this context, we aimed analyze clinical aspects free-ranging owls seized or rescued from Atlantic Forest biome Rio de Janeiro, Brazil. The animals, with without signs diseases,...

We detected no infections with species of Plasmodium, Haemoproteus, Leucocytozoon, Sarcocystis or Trypanosoma in blood smears, liver and spleen impressions, and muscle tissue from 136 redheads (Aythya americana) collected or captured at the Chandeleur Islands, Louisiana (USA), during three winters (1987 to 1990). One bird, a juvenile male, was infected with an unidentified species of microfilar...

Two species of blood protozoans were identified from blood smears collected from 15 specimens of the Chimango caracara (Milvago chimango) on Isla Grande de Chiloé in southern Chile. These included Leucocytozoon toddi in 13 birds, including all 5 of the 4-6 week old nestlings examined, and 8 of the subadults or adults. One of the nestlings also had a dual infection of L. toddi and Haemoproteus t...

Markers of cartilage breakdown enable studying the degradation of cartilage matrix in equine joint pathologies. This study was designed to determine the levels of Coll2-1, a peptide of the triple helix of type II collagen, and Coll2-1NO(2), its nitrated form in the plasma of healthy horses (controls; n=37) and horses suffering from osteochondrosis (n=34). Clinical and arthroscopic scores were a...

Birds contribute indirectly to human welfare as majority of them feed on insects and rodents some are efficient scavengers. Poultry forming is a leading profession which provides nutritive food products for consumption. However, these valuable resources can be infected with wide range blood parasites may affect their survival existence. In this study, the impact Haemoproteus, an intracellular s...