The new tool will allow to distinguish black caviar Beluga from the game other fish species using the DNA of a single egg. This will help fight the trade in illegally harvested white sturgeon caviar. This was reported in the journal Scientific Reports.
It is known that Beluga caviar is the largest and most valuable of all types of caviar. However, its production and catches of fish in the Caspian sea has put the Beluga on the brink of extinction. This process has forced manufacturers worldwide to create a hybrid species, for example, Bester (hybrid of Beluga and sterlet). However, the appearance of caviar it is impossible to determine who “produced”.
Scientists from Hokkaido University and their colleagues from the University of South Bohemia found out how to distinguish between caviar of Beluga and Bester, as well as other fish of the sturgeon family. Detecting in the genome of the fish-specific types of DNA sequences they have developed their method based on polymerase chain reaction.