For Isospora (Protozoa: Eimeriidae) parasites of passerine birds, diurnal periodicity of oocyst output is a well-described phenomenon. From the temporal zone to the tropics, oocyst production is correlated with the light-dark cycle, peaking in the afternoon hours. However, nothing is known about the existence of diurnal periodicity of these parasites in the birds of High Arctic environments, un...

background although the number of infectious diseases has sharply decreased in last few decades, parasitic diseases persist in developing countries. on the other hand, chronic psychiatric patients tend to have low self-control, poor personal hygiene, long term institutionalization and extremely low self-care should be monitored for parasitic diseases since psychosocial conditions can contribute...

BACKGROUND There is an increasing importance of pet-transmitted infections, some of those are considered emerging infections. AIM To determine the species and frequency of intestinal parasites in pets with diarrhea (hemorrhagic gastroenteritis excluded). MATERIAL AND METHODS A descriptive retrospective study. Fecal samples from 972 dogs and 230 cats consulting in two veterinary practices in...

Preference for uninfected mates is presumed beneficial as it minimizes one's risk of contracting an infection and infecting one's offspring. In avian systems, visual ornaments are often used to indicate parasite burdens and facilitate mate choice. However, in mammals, olfactory cues have been proposed to act as a mechanism allowing potential mates to be discriminated by infection status. The ef...