Microgeographic genetic isolation in chub (Cyprinidae: Squalius cephalus) population of the Durance River: estimating fragmentation by dams

摘要: Dehais C, Eudeline R, Berrebi P, Argillier C. Microgeographic genetic isolation in chub (Cyprinidae: Squalius cephalus) population of the Durance River: estimating fragmentation by dams. Ecology Freshwater Fish 2010: 19: 267–278. © 2010 John Wiley & Sons A/S Abstract –  Weirs and dams are wide spread throughout world’s river systems. The most direct effect these barriers is limitation organism movements, i.e., alteration connectivity aquatic habitat. Whereas impact on migratory fish species has been well studied, insights nonmigratory still needed. In particular, knowledge effects cyprinid populations at watershed scale lacking. Therefore, we studied structure eleven (Squalius samples lined up highly fragmented River (France). Using five microsatellite loci, show that even if overall differentiation low, distance does occur diversity increases from upstream to downstream. Dams seem participate jointly with waterway explanation this pattern. However more precise conclusions cannot be made. Guidance for future studies given.