Piscivorous fishes attack and consume a variety of prey; however, few studies have examined interactions multiple predators with prey species. The situational complexity foraging at different times day was explored by examining the paired native (Burbot Lota lota or Smallmouth Bass Micropterus dolomieu) either (Mottled Sculpin Cottus bairdii) invasive (Round Goby Neogobius melanostomus) benthic...

The Round Goby Neogobius melanostomus has spread rapidly around the Great Lakes region since its introduction to North America in 1990. In 2014, a specimen was captured New York State Canal System west of Utica, prompting concerns that would soon reach ecologically and economically valuable watersheds Lake Champlain Hudson River estuary. establishment populations elsewhere been linked number ne...

The quagga mussel ( Dreissena rostriformis bugensis ) was first recorded in France the Moselle River 2011. objective of this study to obtain a better understanding species’ demographic and genetic structure ten years after its observation. To do this, we examined (i) relative abundance/biomass (compared with zebra polymorpha ), (ii) population structure, (iii) along navigable stretch during fou...

Freshwater fishes are in a serious state of decline across the world, making them one most threatened groups vertebrates. The Danube River catchment area Europe holds richest freshwater fish community, but our knowledge current distribution these species is limited. Transylvania, largest region Romania, important tributaries Danube, from where 77 and two lamprey were recorded until now. Despite...

The mesopredatory round goby ( Neogobius melanostomus ) is an important fish invader in fresh and brackish waters of the northern hemisphere. Trophic interactions invasive species can generate ecological impacts across food web invaded ecosystems. Here we investigated major diet components, spatiotemporal variation effect densities on composition two geographically distinct populations Baltic S...

During the past two decades, the round goby Apollonia melanostoma (=Neogobius melanostomus) has expanded its range via shipping transport and canals, extending north and west from the Ponto-Caspian region of Eurasia and to the North American Great Lakes. Exotic populations of the round goby have been very successful in the Baltic Sea and the Great Lakes regions, exerting significant ecological ...