The phenotypic sex of many teleost fishes including flounders can be experimentally altered by treating embryos or larvae with varied temperatures or sex-steroid hormones. To analyse the sex determination mechanism, especially the role of cytochrome P450 aromatase (P450arom), an enzyme that catalyses the conversion of androgens to estrogens, in temperature-dependent gonadal sex differentiation ...

this study was carried out to evaluate the effect of probiotic (bacillus latrospores and bacillus licheniformis) on growth and survival of silver carp larvae (hypophthalmichthys molitrix). rotifers (brachionus plicatilis) were used as live prey vehicle for probiotic transport. they were cultured in sea water with 15 ppt salinity and nannochloropsis oculata microalgae was used as feed. five trea...

This study was carried out in a completely randomized design 3×3×4 factorial arrangement in three periods of rearing in spring 1997. Density of 300 larvae was assigned for each oval tank with 0.1m2 surface area, 30cm deep, a volume of 20lit and 0.25 lit/min of water flow per minute at Shahid Rajaie fish breeding and culture center in Sari, north of Iran. The fries were divided into three groups...

a 74 yr old woman from gonabad, southern part of khorasan razavi province of iran was admitted to a hospital of gonabad, because of respiratory distress, exertional dyspnea and fever. close contact with domes­tic animals, history of chronic obstructive pulmonary disease (copd), and completely resolved pulmonary tuberculosis (tb) in remote past, were nota­ble parts of her past medical history. d...

A study was conducted to determine the relationships between egg and newly hatched larvae Ž . sizes and growth and survival of Siberian sturgeon Acipenser baeri during early stages of development. We hypothesised that this may lead to improved rearing techniques and hatchery Ž . management. Eggs mean size 2.8–4.1 mm were obtained from 20 cultured 13–14 years old Ž . females. There was a positiv...