Особенности метаболической реакции на изменение концентрации кислорода у Moina micrura (Cladocera), выращенных при гипо- и нормоксии
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The effect of short-term hypoxia on weight-specific rates of respiration, animonia excretion and atomic O:N ratio has been investigated in active and narcotized Moina micrura, cultured under hypoxia (~1.4mg О2l-1 ) and normoxia. Total metabolism of acclimated to hypoxia (Ma) and nonacclimated animals (Mna) is dependent on oxygen concentration to a different extent. At sublethal oxygen concentration (~0.5mg l-1) total metabolism: in Mna decreases 18.5 times, in Ma — 2.3 times, due to their ability to maintain high level of activity metabolism. Basal metabolism and weight-specific ammonia excretion rate change in proportion to oxygen concentration, independently of the level of acclimation to hypoxia. At optimal oxygen content mean values of the atomic O:N ratio vary from 16 to 24 and decrease to 5.0—8.5 at sublethal oxygen concentrations. Thus, in M. micrura the transition from routine protein-lipid metabolism to pure protein utilization occurs only under sublethal oxygen concentrations.
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Светличный Л. С., Губарева Е. С. Особенности метаболической реакции на изменение концентрации кислорода у Moina micrura (Cladocera), выращенных при гипо- и нормоксии // Гидробиологический журнал. - 2002. - Т. 38, № 4. - С. 35-44.