Autumn assessment completed at experimental site of Saratov branch of VNIRO

 

During the appraisal accounting and to ensure the systematization of the accounting of fish, work is carried out on their tagging. One of the most modern and most frequently used methods of tagging fish by fish farms is chipping.

 

Electronic identification of fish (chipping) is the implantation of a microchip under the skin of the animal, containing a unique individual number. This method of tagging allows for an individual approach to each individual of the replacement broodstock: to study its growth and development before sexual maturity, as well as to evaluate the individual fish-breeding and biological indicators of producers during spawning.

 

The chip is a sterile capsule made of biocompatible material no larger than a grain of rice. It is administered using a disposable syringe (injector), which is supplied with a microchip located directly in the needle. The microchip has a special anti-migration coating that prevents movement in fish tissue, as well as an antibacterial component. The individual number during chipping is immediately entered into the grading log. Using a scanner, you can easily check the presence of the device in the fish's body, as well as find out its individual number. The procedure lasts a few seconds, the needle is quite thin, and the chip is implanted subcutaneously, so it is practically painless for the fish.

 

Autumn grading made it possible to determine the morphometric parameters of each individual of older age groups and producers of broodstock. Specialists from the Saratov branch of the Russian State Research Center "All-Russian Research Institute of Fisheries and Oceanography" (VNIRO) checked the presence of identification numbers (electronic chip) in fish that had undergone the tagging procedure, and also additionally chipped fish that did not have an individual identification tag. In total, as a result of the assessment work, 50 individuals of carp, 108 individuals of herbivorous fish species (silver carp and grass carp) and 142 individuals of sterlet were measured and microchipped.

 

Press service of VNIRO