عنوان مقاله [English]
Gender determination in the fisheries industry is important for the propagation and cultivation of economically valuable fish. In fish meat, due to the extraction of caviar, the proper method of gender determination is essential. This research was conducted in 1396 on Huso huso, in a closed circuit system, at the Hanusushadeh sturgeon farm, in Khuzestan province. To determine the gender, the fish were first anesthetized in a tub with 100 ppm of eugenol. They were then weighed using a digital scale, with a precision of one gram. In this research, gender determination of all fish was carried out with 100% accuracy. The ultrasound method was used to determine the gender by the Zoncer ultrasound apparatus in Germany. In this research, all fish with 100% accuracy were sexually explicit. Of the 1,000 pieces of Huso huso, 516 male and 484 female pieces were studied. Male and female fish had a weight range of 5150-4236 grams and 7125-4896 grams, respectively, and were 3 years old. Given that gender evaluation on all fish was carried out using ultrasound, this method can be considered the best and most reliable method for determining the gender of sturgeon, as the use of methods which cause the least stress in fish is always a priority.