Differentiated Influence of the Quality of Seston (Content of С, N, P and Polyunsaturated Fatty Acids) on the Rate of Somatic and Generative Growth of Daphnia
A. P. Tolomeev1, O. P. Dubovskaya1, N. N. Sushchik2, O. N. Makhutova2, G. S. Kalacheva2
1 Institute of Biophysics SB RAS; Siberian Federal University
2 Institute of Biophysics SB RAS
tolomeev@ibp.ru
Keywords: Daphnia, food quality, somatic growth, generative growth, fatty acids, C : N : P
Pages: 607-618
Abstract
Data set obtained in 19 experiments aimed at the studies of the growth of Daphnia of longispina group at the natural seston of the Buigach water reservoir (Krasnoyarsk) was used to analyze the connection of the parameters of somatic and generative growth of animals with the amount and quality of food. Depending on the quality of seston, two models of the development of Daphnia were distinguished. It was demonstrated that in spite of the existing positive correlation between somatic and generative growth, a noticeable fraction of the variations of the specific rate of generative production is determined by external factors of the environment - the relative content of N and -linolenic acid (N : C and ALA : C) in the seston.
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