Hymenolepis nana is a common parasite of rodents as well as human intestine. This parasite has beenreported from all over the world, including Iran. The infection rate has been reported up to 40% in someareas. The infection has various clinical manifestations. The parasite could establish severe hyperinfection inpatients with immune deficiency. Regarding the rodents as hosts of the parasite, th...

Introduction: Sarcocystis species are one of the most important meat borne parasites. Sarcocystosis causes several symptoms in human as well as numerous diseases with high economic impact in livestock. In current paper at first results of a pilot study for determination of disease agent in lamb of Yazd province central Iran is presented. Then status of parasite in red meat products in study reg...

Objective(s): Because leishmaniasis is related to the impaired functioning of T-cells, the use of an immunomodulator can increase the efficacy of antileishmanial therapy in visceral leishmaniasis. In this study, we used shark cartilage extract with artemisinin and glucantime against visceral leishmaniasis in BALB/c mice, and evaluated the synergistic therapeutic effect. Materials and Methods: Th...

In many epidemiological models of microparasitic infections it is assumed that the infection process is governed by the mass-action principle, i.e. that the infection rate per host and per parasite is a constant. Furthermore, the parasite-induced host mortality (parasite virulence) and the reproduction rate of the parasite are often assumed to be independent of the infecting parasite dose. Howe...

A fish body condition index was calculated twice for each individual fish, including or excluding parasite mass from fish body mass, and index values were compared to test the effects of parasite mass on measurement of body condition. Potential correlations between parasite load and the two alternative fish condition index values were tested to assess how parasite mass may influence the percept...

Parasite-driven population divergence in hosts can be exacerbated by environmental factors affecting host parasitism, as well increasing sexual selection against parasitized hosts. Environmental influence parasitism directly parasite survival, and indirectly condition, which turn shape selection. To disentangle these potential alternative paths, we used a damselfly (host) - water mite (parasite...