О половом диморфизме и размерно-возрастной изменчивости морфологических признаков гольяна речного — Phoxinus phoxinus (L.) водоемов Украины

Abstract

On the basis of original materials sex dimorphism and size-age variability of plastic characters were determined in Phoxinus phoxinus from various water bodies of the Ukrai ne. Some of the characters (the greatest and the smallest height of the body, thickness of the body and length of tail stem) are not good for the species taxonomy because of their considerable variability.