Investigation of the variability of quantitative signs in irradiated and unirradiated fishes. 2

The influence of single X-ray dose (14 mGy) on some quantitative signs in dependence on the body length was studied in the fishes Barbus conchonius and B. tetrazona. The values of all signs examined increased positively due to growth of the body length. The irradiation with the above mentioned dose and the given conditions had relatively small influence on the growth course of the quantitative signs in the irradiated fishes as well as in the controls. In both species and in both groups the regression lines are in good agreement and they are parallel, resp. The statistically significant difference was stated only between the irradiated and non-irradiated groups of B. tetrazona as to the head height (the regression lines are divergent). (author)