DNA-sequence analyses of avian haemosporidian parasites, primarily of passerine birds, have described the phylogenetic relationships of major groups of these parasites, which are in general agreement with morphological taxonomy. However, less attention has been paid to haemosporidian parasites of non-passerine birds despite morphological and DNA-sequence evidence for unique clades of parasites ...

penfluridol, a neuroleptic drug, considerably reversed halofantrine resistance in t9.96hf halofantrine resistant strain of plasmodium falicparum (originally chloroquine sensitive parasites), but not in k1hf halofantrine resistant strain (originally chloroquine resistant parasites)

introduction : direct relationship has been reported between the prevalence of some parasitic diseases and the presence of microorganisms in water. there are possible contamination of water resources, due to the climate changes and increasing the groundwater level. the purpose of this research was to determine the contamination rate of drinking water supplies to parasites in mazandaran province...

Parasites affect host behavior in several ways. They can alter activity, microhabitats or both. For trophically transmitted parasites (the focus of our study), decreased activity might impair the ability of hosts to respond to final-host predators, and increased activity and altered microhabitat choice might increase contact rates between hosts and final-host predators. In an analysis of trophi...

The extensive use of chemical insecticides to control mosquitoes led the development insecticide resistance and environmental health hazards. This caused a surge in interest eco-friendly biocontrol agents. present study aimed explore susceptibility different instar larvae common mosquito, Culex pipiens Linnaeus, 1758, mermithid nematode, Romanomermis iyengari Welch, 1964. Moreover, effects R. o...

one thousand children from 20 day care centers were studied for intestinal parasites in tehran. the stool samples collected from 0 - 6.6 years old children and examined by formalin ether concentration method for parasitic ova and cyst. cellophane tape technique (graham’s method) also applied for enterobius vermicularis diagnosis, of these 454 children were positive. e.vermicularis with the rate...

When viewed from the top, Trichodina is circular; side views of the organism reveal a saucer or dome shape (Fig. 1). It has three rings of cilia (small, hair-like projections) encircling its body and oral cavity, which are used for locomotion and feeding. Its body is supported by a rigid ring of interconnected discs called a chitinoid or denticular ring (Fig. 2). Each disc has a thorn-like inne...

Plasmodium falciparum malaria parasites with different capabilities of invading sialic acid-deficient erythrocytes were identified. Thai-2 parasites cultured in Tn erythrocytes invaded neuraminidase-treated and Tn erythrocytes twice as efficiently as Thai-2 parasites cultured in normal erythrocytes and seven to ten times more efficiently than a cloned line of Camp parasites cultured in normal e...