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FIGURE 7 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin

FIGURE 7 | Anal fin of Diapoma potamohadros, MACN-ict 10364, A. Male, 37.8 mm SL; B. Female, 37.6 mm SL. Lateral view, left side. Scale bars = 1 mm.

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Fig. 1 in DNA barcode of Parodontidae species from the La Plata river basin - applying new data to clarify taxonomic problems

Fig. 1. Map of the La Plata River basin showing the localities of Parodontidae samples used in this study. Empty pentagon: P. nasus; full pentagon: A. affinis; empty star: P. moreirai; full star: A. affinis; empty square: A. vittatus; full square: A. piracicabae; empty lozenge: Apareiodon sp.; full lozenge: A. vladii; empty triangle: A. affinis; full triangle: A. ibitiensis. The Iguaçu Falls and the Itaipu hydroelectric Power Plant are located in the city of Foz do Iguaçu, PR and the old Seven Falls in the city of Guaíra, PR - shown on the map.

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Fig. 2. K2P in DNA barcode of Parodontidae species from the La Plata river basin - applying new data to clarify taxonomic problems

Fig. 2. K2P distance NJ dendrogram showing the nine analyzed species/populations of Parodontidae from the La Plata River basin.

FIGURE 7 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 7 | Trends in abundance of the main 19 fish species in the survey of fish populations of EBIPES project. Ellipses represent the confidence intervals built with the maximum likelihood profile of the estimation of the instantaneous population growth rate (r). Vertical white lines within each ellipse represent the point estimate of r for each species. The dashed line at the center of the chart indicates the position of the zero value for r. Numbers on the right side of the chart are the total number of individuals caught for each species.

FIGURE 6 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 6 | Trends in abundance of the main 19 fish species in the survey of fish populations of Corrientes Province. Ellipses represent the confidence intervals built with the maximum likelihood profile of the estimation of the instantaneous population growth rate (r). Vertical white lines within each ellipse represent the point estimate of r for each species. The dashed line at the center of the chart indicates the position of the zero value for r. Numbers on the right side of the chart are the total number of individuals caught for each species.

FIGURE 3 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 3 | Trends in annual freshwater fish exports of Argentina of 10 taxa between 1994 and 2019. Symbols represent the slopes of the linear regressions between the annual exports and year. Red symbols indicate slopes with significant negative values, green symbols indicate slopes with significant positive values and grey symbols indicate slopes non significantly different from zero. Whiskers around each symbol indicate 95% confidence intervals generated by the bootstrap method.

FIGURE 5 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 5 | Trends in abundance of the landings of the main 12 fish species in the commercial fishery monitoring of Santa Fe Province. Ellipses represent the confidence intervals built with the maximum likelihood profile of the estimation of the instantaneous population growth rate (r). Vertical white lines within each ellipse represent the point estimate of r for each species. The dashed line at the center of the chart indicates the position of the zero value for r. Numbers on the right side of the chart are the total number of individuals caught for each species.

FIGURE 4 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 4 | Trends in abundance of the landings of the main 19 fish species in the commercial fishery monitoring of Chaco Province at Puerto Antequera. Ellipses represent the confidence intervals built with the maximum likelihood profile of the estimation of the instantaneous population growth rate (r). Vertical white lines within each ellipse represent the point estimate of r for each species. Black ellipses are population trends for drift gillnet landings and grey ellipses are population trends for longline landings. The dashed line at the center of the chart indicates the position of the zero value for r. Numbers on the right side of the chart are the total number of individuals caught using gillnets or longlines for each species.

FIGURE 1 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 1 | A. Map of the southern region of La Plata basin showing the location of landing sites where information was collected for historical statistics of the fishery production of Argentina between 1934 and 1986. The landing sites of each river are indicated by colors; Violet: Uruguay River; Blue: Río de la Plata; Light green: Lower Paraná River; Dark green: Middle Paraná River; Red: Higher Paraná; Maroon: Paraguay; Pink: Bermejo River. B. Map of the southern section of Paraná River, showing landing sites and sampling localities of recent commercial fishery monitoring programs and surveys of fish populations, respectively. Filled blue circles indicate landing sites of commercial fishery monitoring of Santa Fe; the violet filled circle indicate the landing site of recente commercial fishery monitoring of Chaco; green empty circles indicate sampling sites of EBIPES survey of fish populations, and red empty circles indicate sampling sites of Corrientes survey of fish populations. The middle Paraná River floodplain and delta is shaded in bright green. Ar: Argentina; Br: Brazil; Py: Paraguay; Uy: Uruguay.

FIGURE 2 in Long-term trends of fishery landings and target fish populations in the lower La Plata basin

FIGURE 2 | Trends in annual landings of 20 freshwater fish taxa in the historical fishery production of Argentina (1934–1986) for all rivers of the La Plata basin and separately for each one of the rivers. Symbols represent the slopes of the linear regressions between the annual landings and year. Red symbols indicate slopes with significant negative values, green symbols indicate slopes with significant positive values and grey symbols indicate slopes not significantly different from zero. Whiskers around each symbol indicate 95% confidence intervals generated by bootstrap method.

Fig. 2 in Phylogeography of the Neotropical catfish Pimelodus albicans (Siluriformes: Pimelodidae) from río de la Plata basin, South America, and conservation remarks

Fig. 2. Map showing the collecting sites of Pimelodus albicans. The square represents the río Arrecifes, the remaining localities are indicated in the río de la Plata.

Fig. 4 in Phylogeography of the Neotropical catfish Pimelodus albicans (Siluriformes: Pimelodidae) from río de la Plata basin, South America, and conservation remarks

Fig. 4. Minimum spanning network of P. albicans haplotypes. The number of mutational steps separating each haplotype were represented by dots. Pointed branches represent alternatives links. The size of the circles represents the frequency of each haplotype.

Fig. 1 in Phylogeography of the Neotropical catfish Pimelodus albicans (Siluriformes: Pimelodidae) from río de la Plata basin, South America, and conservation remarks

Fig. 1. Hypotheses of phylogenetic relationship among three Siluriformes families: Pimelodidae, Heptapteridae, Pseudopimelodidae. a- Cladogram presented by de Pinna (1998). b- Consensus tree among three most parsimonious topologies based on cyt b sequences modified from Hardman (2005). Numbers above nodes are posterior probabilities recovered by the Bayesian analysis for those clades common to both parsimony and likelihood topologies. Nodes with 0 failed to reject the null hypothesis of zero length, and are considered falsely resolved. c- Maximum parsimony analysis of rag1 and rag2 sequences showing likelihood bootstrap values and Bayesian posterior probabilities (as %) modified from Sullivan et al. (2006).

Fig. 3 in Phylogeography of the Neotropical catfish Pimelodus albicans (Siluriformes: Pimelodidae) from río de la Plata basin, South America, and conservation remarks

Fig. 3. Maximum likelihood tree based on GTR+G model, showing Bayesian support values in the nodes. Pimelodidae family appears basal and paraphyletic whereas P. albicans conforms as a monophyletic assemblage. Pimelodus albicans clade shows four monophyletic groups with strong clade support.

Fig. 10 in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 10. Fish distribution and density in the tailwater of Salto Grande Dam. a) Depth distribution. b) Areas of maximum fish concentration (16 fish/m2), November, 2002, with opened spillway. c) Areas of maximum fish concentration (29 fish/m2) November, 2000, with closed spillway. D - bubble area produced by spillway. E - fishway entrances.

Fig. 8 in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 8. Paired comparisons of species composition for the tailrace (T), lower chamber (LC) and upper chamber (UC) at different sampling periods (adapted from Espinach Ros et al., 1997).

Fig. 4 in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 4. Percent composition for important migratory fish species sampled in the Yacyreta elevators including dorado (Salminus brasiliensis), sábalo (Prochilodus lineatus), pacu (Piaractus mesopotamicus), boga (Leporinus obtusidens), and surubi (Pseudoplatystoma corruscans and P. fasciatum).

Fig. 2 in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 2. Species composition of fishes sampled in the Yacyreta elevators. Data from 1995-1997 adapted from Oldani et al., (2002) and from 2000-2001 adapted from Roncati et al. (2000; 2001).

Fig. 1 in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 1. Geographic location of Yacyretá Dam (Parana River) and Salto Grande Dam (Uruguay River) and fishway details. Location map and project features for Yacyreta and Salto Grande dams.

Fig. 6. a in Is fish passage technology saving fish resources in the lower La Plata River basin?

Fig. 6. a) Depth (m) distribution in the tailwater of Yacyreta Dam. b) Areas of maximum density (> 0.2 fish/m2) with spillway closed. Data recorded at midday and dusk from July, 1997 to June, 1998. E - fishway entrances; MS - main spillway.