Growing evidence suggests that parasite-infected prey is more vulnerable to predation. However, the mechanism underlying this phenomenon obscure. In small mammals, analgesia induced by environmental stressors a fundamental component of defensive repertoire, promoting responses. Thus, reduced may impair ability and increase their predation risk. This study aimed determine whether coccidia infect...

While hosts are routinely exploited by a community of parasite species, the principles governing host responses towards parasites are unclear. Identifying the health outcomes of coinfections involving helminth macroparasites and microparasites is one area of importance for public and domestic animal health. For instance, it is controversial how deworming programmes affect incidence and severity...

forty-one wild sheep (ovis ammon orintalis) from kabodan island of national park of urmialake (north-west of iran), were examined during a period of six months from october 2002 tomarch 2003, for helminthes and coccidian infection. the numbers of oocyst and eggs per gram offaeces (opg & epg) were determined by the centrifuge flotation technique using saturated sugarsolution. the rate of inf...

This article describes the in vitro and in vivo effects of a 25-hydroxycholecalciferol (25[OH]D) treatment in layer hens during a mixed coccidia challenge. HD11 cells (chicken macrophage cell line) were treated in vitro with a coccidia antigen or in a medium supplemented with either 1,25-dihydroxycholecalciferol (1,25[OH]2D) or 25(OH)D. HD11 cells treated in vitro with 200 nM of 1,25(OH)2D had ...

Eighty-eight fecal samples from 2 species of pika, Ochotona collaris and Ochotona hyperborea, collected in Alaska (N = 53) and Russia (N = 35), respectively, were examined for the presence of coccidia (Apicomplexa: Eimeriidae). Five oocyst morphotypes were observed. In O. collaris, we found Eitmeria calentinei, Eimeria cryptobarretti, and Eimeria klondikensis, whereas in O. hyperborea, we found...

This article summarises the current knowledge of the rabbit coccidia and the disease they cause. Various aspects, such as life cycles, localisation in the host, pathology and pathogenicity, immunity and control, are discussed.

Fresh fecal samples from 5 caecilians (Dermophis mexicanus) were collected and examined for coccidia in the summer of 1998. The caecilians were collected in the Department of San Marcos, Guatemala. Two of the 5 (40%) specimens of caecilians contained an Eimeria species that is described here as new. This represents the first coccidia described from a gymnophionian host. Sporulated oocysts are s...

A survey of coccidia in the Rocky Mountain bighorn sheep (Ovis. c. canademis) in Alberta and Kootenay NationaI Park, British Columbia, was conducted from the winter of 1967 to the spring of 1969. Ninety percent of 530 fecal samples cxaniined were positive for coccidia. The species recovered, in order of prevalence, were Eimeria ovina ( syn., E. arloingi) (S6%), E. parva (3579, E. crandallis (34...

Disseminated visceral coccidiosis (DVC) was unexpectedly recognized in a wild white-naped crane (Grus vipio) killed by phosphamidon insecticide. On gross pathologic examination, widely disseminated white nodules were found on the serosa of the pro-ventriculus, gizzard, and intestine, as well as on the surface and in the parenchyma of liver, spleen, and cardiac muscle. Microscopically, asexual s...