–Growth rates of juvenile lake sturgeon (initial weight 8 to 9 g, temperature 17.5° C), fed twice a day on brown worms for 56 days increased from -1.5% BW/d (% body wet weight/day) at zero ration to 2.6% BW/d at a ration of 13.2% BW/d. Maintenance ration was 1.6% BW/d. Fish fed larger rations had higher energy densities and lower water content. Appetite (average volitional daily food consumptio...

A phylogenetic hypothesis is presented illustrating relationships among 23 extant sturgeon species based on nucleotide data from five mitochondrial genes (cytochrome b, NADH5, control region, 16S, and 12S). The tree supports our previous hypotheses regarding relationships among species of Acipenser and Huso. The introduction of Scaphirhynchus and Pseudoscaphirhynchus to the analysis does not ch...

fungal infections of fish are widespread problem which affect wild and farmed species. the aim of the present study was to isolate and identify fungal flora in cultivated and natural caspian sea acipenser persicus. the samples were obtained from skin, fin and gill of the fish and were inoculated into culture media with antibiotics and incubated at 23±1 ?c. 13 species of fungi isolated from the ...

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...

this study was carried out to evaluate the effects of red onion (allium cepa l.) juice and green tea (camellia sinenses) extract on lipid oxidation and sensory characteristics of refrigerated (4ºc) sturgeon fillets (acipenser persicus). fresh fillets were tumbled in 1%, 2.5%, and 5% (v/v) aqueous solutions of onion juice (oj) and tea extract (te), and then stored for up to 8 days at 4°c in a re...

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...

BACKGROUND Zoonotic Cutaneous Leishmaniasis (ZCL) is endemic in many parts of Iran. Recently its incidence is considerable in different parts of Jahrom district, in Fars Province, southern Iran. The aims of our study were to investigate the prevalence of leishmania infection, and identify and characterize the Leishmania species present, among the rodents by molecular methods in a new endemic fo...

BACKGROUND & OBJECTIVES Rodents belonging to Gerbillinae subfamily are the main reservoir hosts of zoonotic cutaneous leishmaniasis (ZCL) in Iran. Regarding the important role of these rodents in the maintenance of Leishmania major in the nature, their identification with morphometric, cytogenetic and molecular methods seems to be essential. The karyotype study of these species, captured from a...

Biological invasion is a pervasive negative force of global change, especially in its effects on sensitive freshwater ecosystems. Even protected areas are usually not immune. Ptychobarbus chungtienensis is a threatened freshwater fish now almost confined to Bita Lake, in the Shangri-La region of Yunnan province, China. Its existence is threatened by the introduction of non-native weatherfishes ...