POPULATIONS OF ARTEMIA CRUSTACEANS OF KARABASSKY FLOODS OF PRIBALKHASHYE

The article presents the analysis of biological parameters parthenogenetics Artemia crustaceans hypergaline reservoirs Kazakhstan. In lakes under study there are shown changes total crustacean biomass decreasing from high-productive to low-productive. Most with in Kazakhstan characterized by presence parthenogenetic populations absence or extremely small males. aggregation males significant numbers may indicate tension ecological situation and desire population increase survival stability offspring. It has been stated that all age periods maturation found reservoirs. At same time, basis studied youngest stages - nauplius, which form 53-86% number Artemias. presented bisexual race, development during summer autumnal period observations. hydrochemical mode Karabassky floods is favorable for activity Branchiopoda crustaceans. size Lake Balhash change on seasons ranging low very high. No. 1 highly productive Artemias summer, lake 2 spring. Such difference temporary aspect caused existence various generations seasons. data obtained prove high potential Balkhash region relation autumn plankton cysts