Publication Date:
2021-07-16
Description:
The Iranian sturgeon (Acipenser persicus) is one of most commercially important sturgeon species in the Caspian Sea and it is considered as an endemic sturgeon of the south part of the Caspian sea. Most of its populations distributed around the south coast of the sea and also the most Iranian caviar production belonged to this species. Due to overfishing, degradation of the rivers conditions as the natural reproduction places the stocks of the fish is decreasing and that is why the Islamic republic of Iran releases millions of its fingerlings to the rivers that end to the sea to stock restoration. With regard to the high expenses of the artificial propagation and fingerlings production, finding and creation of better output will play an important role to decrease the production expenditures. Now days, the decrease in the natural stocks of broodstocks and also the low quality and immature caught broodstocks are the fundamental problems which the industry of sturgeon mass production faces. These not fully matured brooders do not response the hormonal induction processes at the sturgeon hatcheries (because they do not reach to final maturation and some of them having polarization index greater than 10) and large numbers of the caught and transported brooders to the hatcheries will not produce any fry (as the data distributed and published by the sturgeon hatcheries about the production techniques). The main objective of the research study is to apply a new method for artificial reproduction (LHRH-A implantation) to gain the best output from the Iranian sturgeon brooders caught and transported from the Caspian Sea which will be done for the first time on sturgeons and there is not still any report of the application of this procedure (LHRH-A implantation) over these kinds of fishes. Most published report on the method belonged to the teleosts.
Keywords:
Aquaculture
;
Iran
;
LHRH-A
;
Implantation
;
Iranian sturgeon
;
Acipenser persicus
;
Species
;
Population
;
Caviar
;
Species
;
Fingerlings
;
Artificial propagation
;
Broodstocks
;
Hatcheries
;
Brooders
Repository Name:
AquaDocs
Type:
monograph
Format:
application/pdf
Format:
application/pdf
Format:
93
