Respiratory and cardiopulmonary nematode species of foxes and jackals in Serbia

As part of routine monitoring of foxes ( ) and jackals ( ) on the territory of Vojvodina province (northern Serbia), an analysis of respiratory and cardiopulmonary parasitic nematodes was conducted. Both host species harbored , and , whereas was found only in foxes. A high prevalence of infection (72.6 %) was noted for in foxes. The remaining parasite species occurred less frequently in both host species. In all species where it could be quantified, a high degree of parasite aggregation within host individuals was noted. Single species infections were most common, whereas two and three species infections occurred less frequently in both host species. The distribution of abundance of was affected by host sex, with abundances higher in male foxes. Sampling site and year influenced abundance variation in