Analysis of molecular variance (AMOVA) based on COI gene of Odontesthes populations from SW Atlantic Coast, Río de la Plata estuary and Uruguay-Negro River basins.

Two grouping hypotheses among all tested: a) conforming two groups of populations as follows: 1-populations from SL, CL, CAL and CHLvs. 2-populations from VAS, RL, SCS, SGS, PAS, PNB, GL, BP, PRB, INIDEP, CAB, YAS, BAD, RBD and PVS; b) separating three groups of samples as follows:1-populations from CAB, PVS, YAS, BAD and RBD; 2-populations from VAS, RL, SCS, SGS, PAS, PNB, GL, BP, PRB, INIDEP and 3- populations from SL, CL, CAL and CHL. (See Fig. 1 and Appendix S1).