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23 results for “Upper Paraná River floodplain”
Fig. 2 in Feeding strategy of the introduced Astronotus crassipinnis (Cichlidae) in upper Paraná river floodplain
Fig. 2. Ordination by principal coordinate analysis (PCoA) of the food items for the size classes of Astronotus crassipinnis (Heckel, 1840) along the upper Paraná River floodplain. Axis 1 separated the diet of Class I (spheres on the right) from the other two classes (square and diamond in the left, with little variability) (Chiro, Chironomidae larvae; Ostra, Ostracoda; Ephe, Ephemeroptera).
Fig. 3 in Feeding strategy of the introduced Astronotus crassipinnis (Cichlidae) in upper Paraná river floodplain
Fig. 3. Boxplot of the predation rate of Astronotus crassipinnis (Heckel, 1840) (introduced species) and Hoplias sp. 2 (native species) in relation to prey type Moenkhausia sanctafilomenae (Steindachner, 1907) (Fish) and Macrobrachium amazonicum (Heller, 1862) (Shrimp).
Fig. 4 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 4. Ordination of the samples of the upper Paraná River floodplain, through the detrended correspondence analysis (DCA), in years of short (diamond: 2000 white, 2001 gray) and moderate floods (square: 2002 gray, 2003 black). Numbers 1-6 are codes of the sampling stations (see Fig. 1).
Fig. 5 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 5. Fish assemblage attributes in the main habitats of the upper Paraná River floodplain in years of short (2000 and 2001) and moderate (2002 and 2003) floods. The black area of the bars represents the proportion of STH. Numbers 1-6 on the abscissa are codes of the sampling stations (see Fig. 1).
Fig. 2 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 2. Monthly (a) and daily level (b, between January and March) of the upper Paraná River recorded in Porto São José municipality. In b (right axis), the number of days between January and March, when the upper Paraná River surpassed the threshold of 350 cm (horizontal braked line). The years 2000 and 2001 were considered as years of short floods and 2002 and 2003 as years of moderate floods. Source: National Department of Waters and Electric Energy.
Fig. 6 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 6. Relationships between each assemblage attribute and dissolved oxygen, in years of short (white) and moderate floods (black). Attributes where either calculated for the entire fish assemblage (STH+SIH) (a-c) and for the subsets of STH (d-f) and SIH (g-i). Numbers 1-6 are codes of the sampling stations (see Fig. 1).
Figure 2 in On the occurrence of Spirogyra maxima (Zygnematophyceae) in the Upper PArAná River floodplAin
Figure 2. Spirogyra maxima (Hassall) Wittrock. A. Vegetative filament; B. Vegetative cell with detail for the terminal walls; C. Detail showing the conjugation tube formed by both gametangia; D. Filaments with scaraliform conjugation. Bars = 50µm.
Fig. 3 in Factors influencing Serrapinnus notomelas (Characiformes: Characidae) populations in upper Paraná river floodplain lagoons
Fig. 3. Scatterplot of the abundance of Serrapinnus notomelas and the scores of axis 1 of the principal components analysis (PCA) that summarized physical variables. Variables that more contributed to formation of the axis (arrows) are also given. TSS = Total suspended solids.
Fig. 1 in Factors influencing Serrapinnus notomelas (Characiformes: Characidae) populations in upper Paraná river floodplain lagoons
Fig. 1. Map of the upper Paraná River floodplain showing the locations of the sampling stations (lagoons).
Fig. 1 in Feeding strategy of the introduced Astronotus crassipinnis (Cichlidae) in upper Paraná river floodplain
Fig. 1. Upper Paraná River floodplain with Nupelia field laboratory in detail.
FIGURE 2. Sciadicleithrum kritskyi n in Two new species of Sciadicleithrum (Monogenea: Dactylogyridae), gill parasites of Geophagus proximus (Castelnau) (Teleostei: Cichlidae), from the upper Paraná River floodplain, Brazil
FIGURE 2. Sciadicleithrum kritskyi n. sp. from Geophagus proximus. a. dorsal anchor; b. dorsal bar; c. ventral bar; d. aperture vaginal; e. hook 1, 2, 3, 4, 6, 7; f. hook 5; g. ventral anchor; h. Copulatory complex – ventral view; Scale-bars: a–g: 25 µ m; h: 12.5 µ m.
FIGURE 1. Sciadicleithrum kritskyi n in Two new species of Sciadicleithrum (Monogenea: Dactylogyridae), gill parasites of Geophagus proximus (Castelnau) (Teleostei: Cichlidae), from the upper Paraná River floodplain, Brazil
FIGURE 1. Sciadicleithrum kritskyi n. sp. from Geophagus proximus. Composite drawing of whole-mount (ventral view). Scale-bar: 100 µ m.
FIGURE 4. Sciadicleithrum paranaensis n in Two new species of Sciadicleithrum (Monogenea: Dactylogyridae), gill parasites of Geophagus proximus (Castelnau) (Teleostei: Cichlidae), from the upper Paraná River floodplain, Brazil
FIGURE 4. Sciadicleithrum paranaensis n. sp. from Geophagus proximus. a. dorsal anchor; b. ventral bar; c. dorsal bar; d. ventral anchor; e. Copulatory complex – dorsal view; f. Copulatory complex – ventral view; g. hook 1, 2, 3, 4, 6, 7; h. hook 5; i. Egg. Scale-bar: 25 µ m.
FIGURE 3. Sciadicleithrum paranaensis n in Two new species of Sciadicleithrum (Monogenea: Dactylogyridae), gill parasites of Geophagus proximus (Castelnau) (Teleostei: Cichlidae), from the upper Paraná River floodplain, Brazil
FIGURE 3. Sciadicleithrum paranaensis n. sp. from Geophagus proximus. Composite drawing of whole-mount (ventral view). Scale-bar: 100 µ m.
FIGURE 3 in On a new cypridopsine genus (Crustacea, Ostracoda, Cyprididae) from the Upper Paraná River Floodplain (Brazil)
FIGURE 3. Limbs of Cabelodopsis hispida n. gen., all female. A. Rake like organ (MZUSP 24657). B. A2, for chaetotaxy of terminal segment see Fig. 3D (OC.3274). C. T3, detail of pincer (MZUSP 24655). D. A2, detail of the last segment (OC.3274). E. A1 (MZUSP 24658). F. T3 (MZUSP 24655). G. T1, palp (OC.3274).
FIGURE 2 in On a new cypridopsine genus (Crustacea, Ostracoda, Cyprididae) from the Upper Paraná River Floodplain (Brazil)
FIGURE 2. Va l ves of Cabelodopsis hispida n. gen., all female (specimen of illustrations A–F (KM.3418= lost). A. LV, internal view. B. LV, internal view, detail of anterior part. C. LV, internal view, detail of posterior part. D. RV, internal view. E. RV, internal view, detail of anterior part. F. RV, internal view, detail of posterior part. G. Cp, left lateral view (OC.3276). H. RV, detail of postero-ventral part, tilted (OC.3274). I. Cp, dorsal view (OC.3275). J. Cp, ventral view (OC.3277).
FIGURE 1 in On a new cypridopsine genus (Crustacea, Ostracoda, Cyprididae) from the Upper Paraná River Floodplain (Brazil)
FIGURE 1. Map of the area, indicating localities from where Cabelodopsis hispida n. gen. was collected.
FIGURE 4 in On a new cypridopsine genus (Crustacea, Ostracoda, Cyprididae) from the Upper Paraná River Floodplain (Brazil)
FIGURE 4. Limbs of Cabelodopsis hispida n. gen., all female. A. Mx1 (MZUSP 24654). B. T2 (OC.3273). C. Md palp (MZUSP 24656).
List of benthic macroinvertebrate taxa from the upper Paraná River floodplain: summarizing information from a literature search
<p>We created a checklist of benthic macroinvertebrates taxa found in the environments of the upper Parana River floodplain according to the information found in published articles. The checklist data presents the taxa list, the substrate type, the environment type, and the year that each taxon was initially recorded for the region. We searched for data on aquatic macroinvertebrates recorded in the upper Paraná River floodplain by reviewing published articles and reports (grey literature). We took data from an extensive literature search at the ISI Web of Knowledge, SciELO, and Scopus websites, using the keyword combination “upper Paraná River” or “Paraná River” and “floodplain” or “wetland” and “macroinvertebrate*” for the search. We selected articles published between 1990 and 2020. We selected the articles following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) model (Liberati et al., 2009) and considered the selection in four steps: (1) the country of the study, (2) the title, (3) the abstract, and (4) the full text. The selection of papers followed some eligible parameters such as type of organisms, study area, and the presence of taxa data. During the selection, we excluded macroinvertebrates recorded as parasites or those found in studies of vertebrate feeding habits. Articles that contained these two criteria were excluded from the analyses. The articles that remained were analysed regarding the type of substrate where the macroinvertebrates were recorded (i.e., sediment, macrophytes, or artificial substrates), type of environment where each taxon was found (i.e., lentic or lotic environment), and the year in which each taxon was recorded for the first time in the upper Paraná River floodplain.</p>
Fig. 3 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 3. Interannual variation of the absolute and mean ± s.e. values of dissolved oxygen (a, c) and water transparency (b, d) in lakes (circle) and river channels (square) of the upper Paraná River floodplain, in years of short (2000 and 2001) and moderate (2002 and 2003) floods. Numbers 1-6 are codes of the sampling stations (see Fig. 1).
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