Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Ecological-physiological features of native and invasive fish species in small rivers under different degree of transformation.

Abstract

The ecological, population and morpho-physiological adaptation features of aboriginal common gudgeon (Gobio gobio (L.), 1758) and invasive Prussian carp (Carassius auratus (L.), 1758) in small rivers with different degree of urban transformation were investigated. It was found that aboriginal short-cycle rheophilous common gudgeon, which is typical for ichthyocenoses of the small rivers, did not undergo significant changes of ecological and physiological characteristics, whereas invasive mid-cycle limnophilous Prussian carp in the studied watercourses was presented by the short-cycle mold-shaped form. The considerable adaptive potential of these fishes for disturbance the hydrological regime in the small river sections, isolated by hydrotechnical construction, has been established.