Find research datasets worth reusing

opencc-by-4.0Mar 2018View details →

Fig. 5 in Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams

Fig. 5. Mean monthly relative marginal increment (RMI ± S.D.) of 357 Brachyplatystoma rousseauxii's otoliths in relation to the hydrological cycle in the Madeira River basin. The values above bars indicate the number of otoliths analysed each month.

opencc-by-4.0Mar 2018View details →

Fig. 4a in Age and growth of the Amazonian migratory catfish Brachyplatystoma rousseauxii in the Madeira River basin before the construction of dams

Fig. 4a. Different types of growth rings; and b. their relative proportions, in transverse thin sections of Brachyplatystoma rousseauxii from the Madeira River basin. S-single, D-double, T-triple rings.

FIGURE 4 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins

FIGURE 4 | Metaphase plates of Arapaima gigas from Mamirauá (MAM) population (Amazon River basin) hybridized with repetitive DNA sequences, including mono-, di- and trinucleotide microsatellites and the multigene families U2 snDNA. Bar=5 µm.

FIGURE 2 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins

FIGURE 2 | Karyotypes of Arapaima gigas male (A–C) and female (D–F) from Javaé (JAV) population (Araguaia-Tocantins River basin), sequentially arranged from Giemsa-stained (A and D), C-banded (B and E), and double-FISH (C and F) with 5S rDNA (green) and 18S rDNA (red) labeled chromosomes. Bar=5 µm.

FIGURE 1 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins

FIGURE 1 | Map of northern part of South America showing the sampling sites of Arapaima individuals analyzed in this study from Araguaia-Tocantins (brown) and Amazon (green) River basins, coded in the Tab. 1.

FIGURE 5 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins

FIGURE 5 | Comparative genomic hybridization (CGH) experiments on metaphase chromosomes of Arapaima individuals from the Javaé (JAV) (A–D) and Mamirauá (MAM) populations (E–H). First column (A and E): DAPI images of chromosomes; Second column (B and F): Hybridization pattern using gDNA of A. gigas from MAM population (red): Third column (C and G): Hybridization pattern using the gDNA of A. gigas from JAV population (green); Fourth column (D and H) overlap of the images. The shared regions are highlighted in yellow. The arrows indicate the higher abundance of some repetitions in individuals from MAM population. Bar=5 µm.

FIGURE 3 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins

FIGURE 3 | Metaphase plates of Arapaima gigas from Javaé (JAV) population (Araguaia-Tocantins River basin) hybridized with repetitive DNA sequences, including mono-, di- and trinucleotide microsatellites and the multigene families U2 snDNA. Bar=5 µm.

Fig. 3 in A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador

Fig. 3. Call of Hyalinobatrachium adespinosai sp. nov., holotype, recorded in field conditions at the type locality. Air temperature: 18 °C.

Fig. 6 in A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador

Fig. 6. Schematic graph illustrating how the linearity of the Andes facilitates the speciation process.

Fig. 4 in A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador

Fig. 4. Natural history and in-situ photographs of the new species. (A) Adult male of Hyalinobatrachium adespinosai near his egg clutch; other males were observed on the same leaf as the egg clutch. (B) Close-up of the egg clutch. (C) Spider predation on an unattended egg clutch.

Fig. 1 in A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador

Fig. 1. Phylogenetic relationships of Hyalinobatrachium inferred from the 16S mitochondrial gene under ML criteria. All sequences were downloaded from GenBank, except for those of the new species. GenBank codes are listed next to each terminal. Associated locality data is available at GenBank, as well as in Guayasamin et al. (2008), Castroviejo-Fisher et al. (2014), and Twomey et al. (2014).

opencc-by-4.0Mar 2013View details →

Fig. 2 in Second floor, please: the fish fauna of floating litter banks in Amazonian streams and rivers

Fig. 2. Rarefaction curve (Mao Tau Index) based on the number of samples collected in floating litter banks in four river basins in the Brazilian Amazon (Copacá, Cuieiras, Preto da Eva, and Urubu rivers). (a) All floating litter banks recorded, and (b) disentangling rarefaction models for each river basin.

opencc-by-4.0Mar 2013View details →

Fig. 1 in Second floor, please: the fish fauna of floating litter banks in Amazonian streams and rivers

Fig. 1. Floating litter banks of different dimensions and means of accumulation (i.e., diverse retention mechanisms): (a) floating litter banks retained by branches of riparian vegetation; (b) a large floating litter bank retained in a "ria lake" condition at the confluence of the Aliança Stream with the Branco River; (c) a small floating litter bank close to the margin of a 4th-order stream in the Urubu River basin; and (d) a large floating litter bank almost completely out of the water in a stream in the Urubu River basin during the dry season.

opencc-by-4.0Mar 2013View details →

Fig. 3 in Second floor, please: the fish fauna of floating litter banks in Amazonian streams and rivers

Fig. 3. The fish fauna associated with kinon banks is dominated by species of characins (Characiformes), catfishes (Siluriformes) and electric knife fishes (Gymnotiformes). Some of the more common and abundant species in our samples were the following: (a) Elachocharax pulcher, Crenuchidae; (b) Hypopygus lepturus, Hypopomidae; (c) Batrochoglanis raninus, Pseudopimelodidae; and (d) Brachyglanis microphthalmus, Heptapteridae.

FIGURE 6 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 6 | The mean number of prey items of Plagioscion squamosissimus is cited by the interviewed fishers in the Tapajós and Tocantins rivers. Mean (dark vertical line), data distribution (bean gray area), data (points) correspond to individual fishers, confidence interval (rectangle). The median was 2 for

FIGURE 3 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 3 | Paired comparison between the relative abundance (% of biomass in kg) in samples and relative importance for fisheries (% of citations in interviews) of Plagioscion squamosissimus in the Tapajós River. Dots indicate the sampling sites for biomass and fishing communities for interviews.

FIGURE 4 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 4 | Mean size (standard length in cm) of Plagioscion squamosissimus sampled in the Tapajós and Tocantins rivers. Mean (dark horizontal line), data distribution (bean gray area), data (points), confidence interval (rectangle). The median sizes of P. squamosissimus were 23.6 cm in the Tapajós and 22.7 cm in the Tocantins.

FIGURE 5 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 5 | Diagram depicting the main trophic interactions (simplified food web) of Plagioscion squamosissimus based on fishers' LEK (interviews) indicating the 10 most cited prey (yellow) and the 14 most cited predators (red), in the Tapajós (blue) and Tocantins (green). Numbers inside squares are the percent of citations of prey and predators of P. squamosissimus by the interviewed fishers. We obtained 150 citations of prey and 129 citations of predators by the interviewed fishers in the Tapajós River and 56 citations of prey and 50 citations of predators in the Tocantins River. Line thicknesses indicate the number of citations by the fishers interviewed.

FIGURE 1 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 1 | Map of the studied region in the middle course of the Tapajós, Tocantins-Araguaia rivers, in the Brazilian Amazon, showing the fishing communities and distribution of biomass of Plagioscion squamosissimus (black circle) sampled where the research (fish sampling and interviews) was conducted.

FIGURE 2 in Fishers' knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

FIGURE 2 | Comparison of mean relative relevance to fisheries (% of citations in interviews) of Plagioscion squamosissimus according to the interviewed fishers in the Tapajós (n = 7) and Tocantins (n = 4) rivers. Mean (dark horizontal line), data distribution (bean gray area), data (points), confidence interval (rectangle). Points indicate the fishing communities, considered as replicates in this analysis.