Stadnichenko S. The production characteristics of numerous species of the Black Sea bivalve mollusks

The dissertation is devoted to studying peculiatities variability of production properties of bivalve mollusks from the Black Sea and to increase accuracy of mollusks production evaluations by the standard hydrobiological data on their number and a biomass. Accuracy of calculations of production is appreciated by different methods. Influence of separate factors of medium on productivity of mollusks is established, the production frame of some their settlements for the first time is revealed. Dependences of annual production and Р/В-coefficient from various other population characteristics of mollusks (mean individual mass, mean population biomass, lifetime and death rate of mollusks) are found. Conformity of the analytical model determining interrelations of specific production with lifetime of animals, to the received population characteristics of mollusks is established. For the first time distinctions of production allometric equations for each species sea's mollusks and for their bunches are shown, the theoretical model of an interrelation of these equations is proved and tested.