Numerous studies have identified factors that control avian hematozoan infections, but the mechanisms that account for host differences in parasitemia remain largely speculative. To address this issue, we compared the prevalence of these parasites in stained blood smears from four conspecific Sonoran desert Aimophila sparrow species sampled during their breeding season: rufous-winged (Aimophila...

Otiditaenia macqueeni, Raillietina sp., Paronchocerca tonkinensis, and Allodapa sp. were recovered from a group of rufous-crested bustards {Eupoditis ruficrista) which died after importation into the United Arab Emirates. Associated findings at postmortem examination in cluded cardiac rupture, weight loss, trichomoniasis, and enteritis. Histologie examinations revealed Paronchocerca sp. microfi...

A total of 315 birds representing 75 species (23 families) from Villavicencio and San Miguel (Meta, Colombia) were examined for haematozoa. Fifty birds (15.9%) harbored blood parasites. Microfilariae were the most common haematozoans encountered, followed by species of the genera Haemoproteus, Plasmodium and Trypanosoma. This survey included 15 new host-parasite records and 8 species of birds t...

Birds may be host to a number of species of blood-inhabiting protozoa and nematode worms transmitted by haematophagous arthropods. Protozoan parasites include haemosporidia in the genera Plasmodium, Haemoproteus, Leucocytozoon, Hepatozoon, and Babesia, and haemoflagellates in the genus Trypanosoma. Most families of birds are susceptible to blood protozoal infection in the wild (Bennett et al. 1...

Bloodsmears were taken from separate groups of five helmeted guineafowls, Numida meleagris, shot at approximately monthly intervals at Skukuza and near Lower Sabie in the Kruger National Park during the period August 1988 to August 1990. Ninety-eight (86%) of 114 guineafowls had single or multiple infections of Aegyptianella sp., Haemoproteus pratasi, Hepatozoon sp., Leucocytozoon neavei, Plasm...