Fig 1.
Sampling sites (circles) of Pseudoplatystoma magdaleniatum in three sectors of the Cauca River downstream the Ituango dam.
S2-S3: Ituango River mouth, Golondrina, Espíritu Santo River mouth, Puerto Valdivia; S4-S5: Puerto Jardín, Man River, El Doce, Cáceres, Caucasia, La Ilusión, Nechí, Palomar; S6-S7-S8: Guaranda, Tres Cruces and floodplains La Raya, La Panela, Piqué and El Floral.
Table 1.
Average values per locus of genetic diversity metrics for Pseudoplatystoma magdaleniatum in the Ex-post (collected between years 2019–2021 in three sectors of the Cauca River downstream of the Ituango dam) and Ex-ante (years 2010–2014; [8]) samples.
Table 2.
Assessment of recent bottleneck events and estimation of effective population size in Ex-post (2019–2021, sectors S1—S8 of the Cauca River) and Ex-ante (years 2010–2014; [8]) samples of Pseudoplatystoma magdaleniatum.
Fig 2.
(A) Discriminant analysis of principal components (DAPC; 30 principal components retained and 71.3% of the variance) and co-ancestry probabilities when (B) K = 2 and (C) K = 3 of 164 individuals of Pseudoplatystoma magdaleniatum of the Ex-post sample (2019–2021, sectors S2 –S8 of the Cauca River).
Table 3.
Pairwise comparison of the standardized genetic structure indices F’ST (below the diagonal) and Jost’s DEST (above the diagonal) in the Ex-post sample (collected between 2019–2021, sectors S1—S8 in the Cauca River).
Fig 3.
(A) Discriminant analysis of principal components (DAPC; 50 principal components retained and 85% of the variance) and (B) co-ancestry probabilities of 311 individuals of Pseudoplatystoma magdaleniatum (147 Ex-ante: Years 2010–2014, middle sectors and lower of the Magdalena-Cauca basin; 164 Ex-post: Years 2019–2021, sectors S1—S8 of the Cauca River).