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Nauplii of the brine shrimp Artemia sp. are the optimal starter food for many fish and crustaceans species. For this reason, technologies for their production are being improved, including the activation of cysts. The effect of different concentrations of hydrogen peroxide on hatching process a as activator was studied. Its optimal concentration has been determined; it amounts to 0.2-0.4 ml/l. The reasons for various impacts of hydrogen peroxide on different Artemia cysts are formulated. The dynamic of brine shrimp hatching with and without the activator was studied. It has been established that the addition of a hydrogen peroxide solution as an activator increases the hatching of Artemia nauplii, however, it does not impress on the rapidity of Artemia nauplii release from cysts.

Whiteleg shrimp Penaeus vannamei (Boone, 1931) is one of the most popular and promising objects of world aquaculture. In this article possibilities and prospects of cultivating this species in Russia, the results of studies of temperature and salinity effects on the survival rate, growth, activity and food intake of white-footed shrimp were discussed. The critical values of temperature and salinity for this species have been determined. The most progressive for whiteleg shrimp cultivation are the southern regions of Russia, which have an extended sea coastline or a lot of hyperhaline or brackish waterbodies. Technologies combining commercial pond rearing with preliminary rearing of juveniles in RAS are recommended to use to increase the efficiency of cultivation.

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