Diet composition of round goby ( <i>N eogobius melanostomus</i> (Pallas, 1814) under different ecological conditions
The article covers features of round goby’s <i>Neogobius melanostomus</i> (Pallas, 1814) nutrition from saltwater areas of Sea of Azov and freshwater of Kahovskyy Reservoir on summertime by 2011-2012. The nutrition spectrum under different conditions of reservoirs was characterized. The important position of round goby's diet composition belongs to shellfish in researched reservoirs. The largest amounts of hydrobionts were presented in the sea areas. The maximal index of similarity of food objects was registered in fishes from the southern part of the Sea of Azov and Obytochnoy bay. The caloric content of <i>Anadara inaequivalvis</i>, <i>Abra ovata</i>, <i>Cerastoderma glaucum</i>, <i>Lentidium mediterraneum</i>, <i>Parvicardium exiguum</i> were the most energy-intensive.