Genetic variability in the tolerance of natural populations of Simocephalus vetulus (Müller, 1776) to lethal levels of sodium chlorideCláudia Loureiro, Bruno B. Castro, Maria Teresa Claro, Artur Alves, M. Arminda Pedrosa and Fernando GonçalvesAnn. Limnol. - Int. J. Lim., 48 1 (2012) 95-103DOI: https://doi.org/10.1051/limn/2012002