К морфобиологической характеристике вьюновых (Cobitidae) Верхнего Днестра

Abstract

Morphological characteristic of four species of loach family from the upper Dniester: Nemachilus barbatulus (L.), Cobitis taenia L., C. aurata (Fil.), Misgurnus fossilis (L.) is supplemented with the data on their reproduction and distribution in the Dniester basin. Distinctions of the Dniester Nemachilus barbatulus from more northern forms and its similarity with the typical form are shown. Cobitis aurata from the upper Dniester differs distinctly from C. taenia in morphological characters typical of this species. The Dniester form of C. aurata differs from that from the upper reaches of the Strvyazh river. Variability of the morphological characters of the compared populations Nemachilus barbatulus and Cobitis aurata is explained probably by ecological plasticity of these species.