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20 results for “Geophagus brasiliensis”
Fig. 1 in Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis
Fig. 1. Malate Dehydrogenase enzyme activity of Geophagus brasiliensis exposed to normoxic (90% oxygen saturation) and hypoxia (20% oxygen saturation) conditions for 8 hours at 20°C, 24°C and 28°C. a. in liver; b. in white muscle; and c. in heart. Asterisks indicates significant differences between treatments at the same temperature, p <0.05. Different lowercase letters indicate significant differences for the same treatment at the temperatures studied, p <0.05.
Fig. 3 in Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis
Fig. 3. Citrate Synthase enzyme activity of Geophagus brasiliensis exposed to normoxic (90% oxygen saturation) and hypoxic (20% oxygen saturation) conditions for 8 hours at 20°C, 24°C and 28°C. a. in liver; b. in white muscle; and c. in heart. Asterisks indicates significant differences between treatments at the same temperature, p <0.05. Different lowercase letters indicate significant differences for the same treatment at the temperatures studied, p <0.05.
Fig. 35. a. Geophagus brasiliensis, 148.0 in Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated
Fig. 35. a. Geophagus brasiliensis, 148.0 mm SL, fresh specimen, uncat. b. Geophagus sveni, NUP 18698, 115.0 mm SL, rio Ivinheima, Naviraí, State of Mato Grosso do Sul. c. Gymnogeophagus setequedas, 81.3 mm SL, fresh specimen, uncat. d. Laetacara araguaiae, NUP 11315, 43.5 mm SL, upper rio Sucuriú, Paraíso, State of Mato Grosso do Sul. e. Oreochromis niloticus, NUP 1132, 185.0 mm SL, Corumbá Reservoir, Caldas Novas, State of Goiás. d. Satanoperca sp., 150.0 mm SL, fresh specimen, uncat.
Fig. 1 in Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity
Fig. 1. Coastal plain of Rio Grande do Sul in southern Brazil showing the Patos-Mirim lagoon complex (a) and the location of the four sampling sites where the specimens of the pearl cichlid Geophagus brasiliensis were collected (b).
Fig. 3. a in Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity
Fig. 3. a: Percentage of empty stomachs (PES) according to sexual maturity (immature and mature) and gender (female and male). b: Mean values (+ standard error) of the total food content expressed in volume (log10(x+1) transformed) in the digestive tract of the pearl cichlid Geophagus brasiliensis.
Fig. 2 in Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity
Fig. 2. Volume (%, black bars) and frequency of occurrence (%, gray bars) of the main food categories found in the digestive tracts of the pearl cichlid Geophagus brasiliensis.
Fig. 1 in Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions
Fig. 1. Effect of environmental enrichment on aggressive interactions in pairs of pearl cichlid Geophagus brasiliensis. Aggression was studied in the resident fish's territory. The graphic shows median, quartiles, and minimum and maximum values. * denotes statistical difference between values within a same enrichment condition (p <0.05; Wilcoxon test) and between resident fish (p <0.05; Mann-Whitney U test). # denotes statistical difference between value for intruder fish (p <0.05; Mann-Whitney U test).
Fig. 3 in Water level influences on body condition of Geophagus brasiliensis (Perciformes: Cichlidae) in a Brazilian oligotrophic reservoir
Fig. 3. Means and standard error (vertical lines) for gonadosomatic index (GSI) by sex and size classes for Geophagus brasiliensis in the Lajes Reservoir. Between-sex significant differences: * p <0.05; ** p <0.01.
Fig. 2 in Water level influences on body condition of Geophagus brasiliensis (Perciformes: Cichlidae) in a Brazilian oligotrophic reservoir
Fig. 2. Means and standard errors (vertical lines) for body condition (K) by sex and water level periods for Geophagus brasiliensis in the Lajes Reservoir. Distinct letters (a, b, c) indicate significant differences at 95% level of confidence.
FIGURE 1. Sciadicleithrum frequens n in A new species of Sciadicleithrum (Monogenea: Ancyrocephalinae), gill parasite of Geophagus brasiliensis (Quoy & Gaimard) (Teleostei: Cichlidae) from reservoirs in the State of Paraná, Brazil
FIGURE 1. Sciadicleithrum frequens n. sp. from Geophagus brasiliensis. Composite drawing of whole-mount (ventral view). A = hook 5. Scale-bar: 75 µ m.
FIGURES 2–10. Sciadicleithrum frequens n in A new species of Sciadicleithrum (Monogenea: Ancyrocephalinae), gill parasite of Geophagus brasiliensis (Quoy & Gaimard) (Teleostei: Cichlidae) from reservoirs in the State of Paraná, Brazil
FIGURES 2–10. Sciadicleithrum frequens n. sp. from Geophagus brasiliensis. 2. ventral anchor; 3. dorsal anchor; 4. hook 5; 5. hook 1, 2, 3, 4, 6, 7; 6. Copulatory complex – ventral view; 7. Copulatory complex – lateral view; 8. ventral bar; 9. Dorsal bar; 10. Egg. Scale-bar: 25 µm.
Fig. 2 in Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis
Fig. 2. Lactate Dehydrogenase enzyme activity of Geophagus brasiliensis exposed to normoxic (90% oxygen saturation) and hypoxic (20% oxygen saturation) conditions for 8 hours at 20°C, 24°C and 28°C. a. in liver; b. in white muscle; and c. in heart. Asterisks indicates significant differences between treatments at the same temperature, p <0.05. Different lowercase letters indicate significant differences for the same treatment at the temperatures studied, p <0.05.
Figure 1 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 1 Tree topology estimated by Bayesian inference analysis for the 'Geophagus' brasiliensis species group. Numbers before terminal species names are voucher numbers. Numbers above branches indicates Bayesian posterior probabilities and below bootstrap values of the Maximum Parsimony and Maximum Likelihood analyses, respectively, separated by bar. Dashes indicate values below 50 and asterisks indicate maximum support values.
Figure 2 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 2 Geophagus rufomarginatus, UFRJ 9994, holotype, 96.8 mm SL; Brazil: Bahia: Rio Buranhém Basin. Scale bar 10 mm. Photograph by J.L.O. Mattos.
Figure 5 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 5 Caudal fin colour pattern. A Geophagus multiocellus, UFRJ 8217, topotype. B Geophagus santosi, UFRJ 9998, topotype. Scale bar 10 mm. Photographs by J.L.O. Mattos.
Figure 4 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 4 Geophagus multiocellus, UFRJ 11764, holotype, 101.4 mm SL; Brazil: Bahia: Rio de Contas Basin. Scale bar 10 mm. Photograph by J.L.O. Mattos.
Figure 3 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 3 Geographical distribution of the 'Geophagus' brasiliensis species group in northeast Brazil: red star, G. itapicuruensis; red triangle, G. obscurus; yellow triangle, G. diamantinensis; red circle, G. santosi; black diamond, G. multiocellus; yellow circle, G. rufomarginatus. Raw data set source was obtained from Natural Earth public domain (http://www.naturalearthdata.com).
Figure 6 from: Mattos JLO, Costa WJEM (2018) Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution 94(2): 325-337. https://doi.org/10.3897/zse.94.22685
Figure 6 Geophagus santosi, UFRJ 11765, holotype, 110.6 mm SL; Brazil: Bahia: Mariana River. Scale bar 10 mm. Photograph by J.L.O. Mattos.
Fig. 1 in Water level influences on body condition of Geophagus brasiliensis (Perciformes: Cichlidae) in a Brazilian oligotrophic reservoir
Fig. 1. Means and standard errors (vertical lines) for condition (K) by sex and size classes for Geophagus brasiliensis in the Lajes Reservoir. Between-sex significant differences: * p <0.05; ** p <0.01.
Fig. 4 in Water level influences on body condition of Geophagus brasiliensis (Perciformes: Cichlidae) in a Brazilian oligotrophic reservoir
Fig. 4. Means and standard errors (vertical lines) for gonadosomatic index (GSI) by sex and water level periods for Geophagus brasiliensis in the Lajes Reservoir. Distinct letters (a, b, c) indicate significant differences at 95% level of confidence.
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