Obstruction of the upstream migration of the invasive snail Cipangopaludina chinensis by high water currents

Abstract The,viviparid snail Cipangopaludina chinensisis an Asian invasive species in North America. It has been recently reported at UNDERC, and an anecdotic observation was made about its invasion at Brown Creek, where it appears to have stopped on the downstream side of a culvert. We hypothesized that the increase in water current that the culvert creates is what is holding the snail from invading further up. We conducted laboratory trials where snails of different size classes were exposed to a