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Zh Vyssh Nerv Deiat Im I P Pavlova. 1994 May-Jun;44(3):516-25.

[An analysis of the effect of different factors in early ontogeny on the behavior of sturgeon fry].

[Article in Russian]


The fractional factorial analysis of 2(5) type was carried put in order to estimate the influence of 5 different factors on stellate sturgeon fry behaviour in early ontogenesis. Different indices obtained in hydrodynamic test, in "open-field" test, in passive avoidance conditioning procedure were analysed. Statistically significant positive and negative influences on the indices were found for all the factors (level of illumination, food diets, high or low stream, presence or absence of predator fishes, character of a bottom). The most probable mechanism of stellate sturgeon behaviour modifications under the influence of different factors is the selection (predominant survival) of the samples which possess peculiarities the most adequate to environmental conditions.

[Indexed for MEDLINE]

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