This study was performed to compare the efficiency of six microalgae namely Dunaliella tertiolecta, Tetraselmis suecica, Nannochloropsis oculata, Chaetoceros sp < em>., Chlorella sp. and Spirolina sp < em>. on the growth, survival rate and reproduction efficacy in Artemia urmiana in laboratory conditions. Artemia cysts were harvested from Urmia Lake and hatched according to the standard method....

During a parasitological investigation on the fresh water fishes of North West of Iran (West Azerbaijan Province), 266 specimens of 11 fishes were examined. Fishes were collected from seven stations from Aras, Zangbar and Sarysou Rivers between summer 2001 to summer 2002. Nine protozoan species were detected; eight Cilliophora and one Rhizopoda. Cilliophora are: Chilodonella sp., Apiosoma sp.,V...

According to previous studies, the genus Rheum in Iran includes four species: R. turkestanicum Janisch., R. persicum Losinsk., R. ribes L. and R. khorasanicum Baradaran & Jafari. During the long-term study, based on field and many herbaria specimens, three new species including R. iranshahrii Taheri & Assadi sp. nov., R. kordestanicum Taheri & Assadi sp. nov. and R. austro-iranicum Taheri & Ass...

background: dog is known to act as definitive host for some parasites that cause important diseases in man and animals. the aim of the present study was to determine the prevalence of neospora caninum and other intestinal parasites in dogs in khorasan razavi province, iran. methods : a cross-sectional study was done concerning frequency of n. canium and other in­testinal parasites in dogs in ma...

abstract in this study a greenhouse experiment was conducted to evaluate the role of acc deaminase enzyme on alleviation of salinity stress of canola plant. canola plants were exposed to pseudomonas fluorescens strain p12 which contains a rhizobacter capable of producing pseudomonas fluorescens in comparison with plants exposed to mutant pm12 unable to produce the required enzyme. the mutant wa...

background: many members of the genus satureja l. (lamiaceae) have interesting pharmacological and biological properties. objective: in this research, major essential oil (eo) compositions, rosmarinic acid (ra) content, and antioxidant and antibacterial properties of the leaf extracts of nine satureja species (s. bachtiarica, s. mutica, s. sahandica, s. macrantha, s. atropatana, s. edmondi, s. ...

background: much of the environment is affected by petroleum contamination. it imposes serious health problems for humans as well as serious environmental impact. bioremediation is an important consideration for removing environmental pollutants because, compared with other technologies, it incurrs lower costs and is environmentally compatible. methods: crude oil degrading bacteria were isolate...

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in this study, we have investigated the effects of mix of tomato (solanum lycopersicum) &amp; carrot) daucus carota ( and red bell pepper )capsicum annuum( as a natural pigment source and astaxanthin as synthetic pigment sources on the skin colour of cichlid fish (astronotus ocellatus sp., agassiz, 1831), which are generally white with red patches in the dorsal skin. the fish were fed diets con...