The objective of this study was to measure the concentrations of steroid hormones (testosterone, 17β-estradiol and progesterone) in kutum Rutilus frisii kutum during spawning period. Serum testosterone level in gravid fish ...

Extracellular products (ECP) of bacteria is a factor responsible for a number of biological effects including immunostimulatory activities in different animals including fish. In this study, the effect of extracellular ...

The experiment was carried out in one year on blood sexual hormones in 74 four-years old beluga sturgeon Huso huso held in 8 round cement tanks in brackish water with salinity of about 13.5 ppt. Fishes were biopsied at the ...

The initial feeding time for fish larvae is considered a critical period because it influences their subsequent survival and growth.This study was carried out to elucidate the effects of water temperature on initial feeding ...

The feeding habits and life cycle of a population of the alien threespined stickleback Gasterosteus aculeatus, were studied in the southeast Caspian Sea from December 2000 to November 2001 to evaluate its potential impact ...

This study was conducted to investigate the effect of dietary chitosan on the non-specific immunity, growth and survival of common carp. Common carp with an average weight of 45 ± 2 g and total length of 31 ± 2 cm were fed ...