Abstract There are major underground brackish and saline water resources at the middle of Iran without any useful application in agriculture, industry and etc.; because of preventing desert development and arising salinization of fresh water, it’s necessary to investigate how develops aquaculture in these regions. On the other hand, Beluga (Huso huso) was showed suitable beneficial such as good growth, valuable caviar, delicious and marketable meat, high economical point of view, accepting pellet feeds and the main subjet, it is native. So, investigation of its reproduction and rearing in these water resources is noticed by National Research Center of Saline Water Aquatics. Follow-up the last studies on acclimization, nutrition and making brood stock, Investigation of gonadal development of Beluga (Huso huso) rearing broods kept in underground brackish water was performed due to studing caviar production possibility of rearing Beluga in thous water rescources. Beluga broods (10: 2 male and 8 female) had been kept in rearing containers for 2 years and fed 0.3% of biomass. Total length and weight of the fish was measured every 6 monthes and their gonadal development investigated by ultra sonography. The result showed that suitable growth and gonadal development in this period and production of caviar; despite of environmental shocks due to desert conditions such as ±2 ºC daily termal shock and higher 25 ºC temperature for some monthes during late spring and summer. an‎d this explaines high capability of Beluga to acclimating to different environment and it is possible to develop their rearing for meat and caviar production in these regions with underground brackish water.

منابع آبهاي لب شور زيرزميني بافق , فيل ماهي (Huso huso) پرورشي , روند تكامل گناد مولدين

تهران موسسه تحقيقات علوم شيلاتي كشور

بخشي رنگي، مصور، نمودار

موسسه تحقيقات علوم شيلاتي كشور 49508

كتابنامه: ص. 43- 44

تاس ماهيان- پرورش و تكثير

3۷۴۲

ب352م

639