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75 results for “Brachyhypopomus”
FIGURE 2 in Brachyhypopomus gauderio, new species, a new example of underestimated species diversity of electric fishes in the southern South America (Gymnotiformes: Hypopomidae)
FIGURE 2. Head of the Holotype (MCP 43280, male, 149.0 mm LEA) of Brachyhypopomus gauderio, Palmares do Sul, Rio Grande do Sul, Brazil.
FIGURE 1 in Brachyhypopomus gauderio, new species, a new example of underestimated species diversity of electric fishes in the southern South America (Gymnotiformes: Hypopomidae)
FIGURE 1. Holotype (MCP 43280, male, 149.0 mm LEA) of Brachyhypopomus gauderio, Palmares do Sul, Rio Grande do Sul, Brazil.
FIGURE 5 in Brachyhypopomus gauderio, new species, a new example of underestimated species diversity of electric fishes in the southern South America (Gymnotiformes: Hypopomidae)
FIGURE 5. Typical habitat of Brachyhypopomus gauderio; flooded area near Arroio dos Ratos creek, Charqueadas, Rio Grande do Sul, Brazil.
Data from: Predators inhibit brain cell proliferation in natural populations of electric fish, Brachyhypopomus occidentals
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Fig. 1 in Brachyhypopomus draco, a new sexually dimorphic species of Neotropical electric fish from southern South America (Gymnotiformes: Hypopomidae)
Fig. 1. Holotype (MCP 41540, male, 137.3 mm LEA, above) and paratype (MCP 41537, female, 108.4 mm LEA, below) of Brachyhypopomus draco, from Parque Estadual de Itapuã, Rio Grande do Sul, Brazil.
Figure 8 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 8 - Paratypes of Brachyhypopomus bennetti sp. n. (top 3) and Brachyhypopomus walteri sp. n. (bottom 3) showing transparency of electric organ to transmitted light and comparative depth of the electric organ in the two species.
Figure 7 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 7 - Paratypes of Brachyhypopomus bennetti. A Paratype tag no. 93-214 from INPA 39581 (TL 175 mm, LEA 150 mm), female, Lago Janauari, Amazonas, Brazil B Paratype tag no. 93-137, INPA 8940 (TL 190 mm, LEA 167 mm), Lago Janauari. Preserved whole specimens shown above close-up views of specimens immediately post-mortem. Scale bars equal 1 cm.
Figure 6 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 6 - Holotype of Brachyhypopomus bennetti, INPA 39560 (TL 215 mm, LEA 171 mm), female, Paraná do Paracuúba, Amazonas, Brazil. Preserved whole specimen shown above close-up view of specimen immediately post-mortem. Scale bars equals 1 cm.
Figure 5 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 5 - Distribution of examined specimens of Brachyhypopomus walteri sp. n. (blue circles) and Brachyhypopomus bennetti sp. n. (red diamonds). Common holotype locality for both species indicated by yellow star.
Figure 4 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 4 - Paratypes of Brachyhypopomus walteri. A Paratype tag no. 93-55 from INPA 8880 (TL 164 mm, LEA 118 mm), sex undetermined, Ilha da Marchantaria, Rio Solimões, Amazonas, Brazil B Paratype tag no. 93-114 from INPA 8939 (TL 155 mm, LEA 125 mm), female, collected with holotype. Preserved whole specimens shown above close-up views of specimens immediately post-mortem. Scale bars equal 1 cm.
Figure 3 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 3 - Holotype of Brachyhypopomus walteri, INPA 8941 (TL 163 mm, LEA 126 mm), sex undetermined, Paraná do Paracuúba, Amazonas, Brazil. Preserved whole specimen shown above close-up view of specimen immediately post-mortem. Scale bars equal 1 cm.
Figure 2 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 2 - Electric organ discharge (EOD) waveforms of Brachyhypopomus walteri sp. n.and Brachyhypopomus bennetti sp. n. A EOD of holotype specimen of Brachyhypopomus walteri sp. n. B EODs of nine paratypes of Brachyhypopomus walteri sp. n. C EOD of holotype of Brachyhypopomus bennetti sp. n. D EODs of six paratypes of Brachyhypopomus bennetti sp. n. All are five millisecond traces with head positivity recorded upwards; water temperature between 21 and 23°C. Scale bars = 1 millisecond.
Figure 10 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 10 - Effect of loss of caudal portion of body by predation on electric organ discharge (EOD) waveform in three species of Brachyhypopomus. Undamaged individuals indicated by black dots and black EOD trace, those with regenerating caudal body following substantial injury with red A Brachyhypopomus pinnicaudatus specimens 93-20 (above) and 93-25 (below) B Brachyhypopomus walteri paratypes 93-188/2 (above) and 93-187-1 (below). Damaged paratype 93-140 (blue trace) not shown C Brachyhypopomus bennetti paratypes 93-37/1 (above) and 93-37/3 (below). EODs shown with head positivity upwards and amplitude-normalized.
Figure 1 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 1 - Upper jaw in ventral view of cleared and stained specimen of Brachyhypopomus (Odontohypopomus) walteri sp. n. (ANSP 194025) showing teeth present on the premaxillae. PMX=premaxilla, MX=maxilla, MET=mesethmoid, PAL=ossified element within palatine cartilage (not stained), VET=ventral ethmoid.
Figure 9 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 9 - Type locality and habitat for Brachyhypopomus bennetti sp. n. and Brachyhypopomus walteri sp. n. and method of capture with seines pulled underneath floating vegetation (Paspalum repens and Eichhornia crassipes) from a motorboat. Paraná do Paracuúba, south of Manaus, Brazil, approximately 03°12.6'S, 59°59.4'W.
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