title: [Analysis of individual changes in heat resistance of clones of Daphnia magna at the initial stages of cultivation].
abstract: 30 clones of water fleas have been studied on the basis of heat resistance (HR) of these organisms at the initial stages of cultivation. Ten clones died before the appearance of the offspring in F2; the remaining clones were multiplied successfully and produced subsequent generations. Based on the change in the individual HR level of the clones in F1 as compared with ancestors, it was concluded a violation of the mechanisms of physiological homeostasis in the population of dead clones. In the remaining clones, there were a high negative correlation between the initial individual resistance level and its change in F1 and F2 and a pronounced narrowing of the variability diapason in F1. In this animal group, the significant lability of individual-level resistance was observed as well as its ability to regulate the shift of its resistance, which provided an efficient work of the mechanisms of physiological homeostasis.
authors: A P
authors: AP
authors: Mironova
mesh_terms: D000818:Animals; D002999:Clone Cells; D003621:Daphnia / Q000235:genetics / Q000254:growth & development / Q000502:physiology; D006358:Hot Temperature