Tracheliastes maculatus Kollar, 1836 a pathogenic parasite of Abramis brama of the elder age was found in A. brama from the Krasnooskolian and Pechenegian water storage reservoirs (the Kharkov Region). Dynamics of A. brama ...

In the forest zone of the Crimean Peninsula representatives of the new for science species Deroceras ramosum sp. n. were found. This species differs from the described earlier species of the genus Deroceras in peculiarities ...