Microsatellite analysis and computer simulations strongly suggested that a culvert, i.e. a connection between two river stretches by a narrow tube underneath an artificial channel, was not a migration barrier for the endangered bullhead Cottus gobio.
No takes yet. Share an insight, caveat, or question.
Knaepkens et al. (2004) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: