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Fig. 4 in Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

Fig. 4. Feeding strategy diagram for individuals of three size classes (A: <400 mm TL; B: 400-500 mm TL; C:>500 mm TL) of the dusky grouper Mycteroperca marginata. Prey-specific abundance plotted against frequency of occurrence of food items in the diet of the dusky grouper. The inserted boxed (A) represents a conceptual diagram of a resource niche width characterized by a high between-phenotype component (sensu Amundsen et al., 1996) to niche width contribution. The number of individuals analyzed in each size class is 29, 34 and 15, respectively.

Fig. 3 in Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

Fig. 3. Average values (±SD) of prey's size (mm, TL) and biomass (g) in the stomach content of three size classes (<400 mm TL; 400-500 mm TL;>500 mm TL) of the dusky grouper Mycteroperca marginata. The number of individuals analyzed in each size class is 29, 34 and 15, respectively.

Fig. 1 in Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

Fig. 1. Patos Lagoon (10.360 km2) in southern Brazil (A) and the 4.5 km long pair of jetties that connects the estuarine zone of the lagoon with the Atlantic Ocean (B), detail of the west jetty and their large pieces of rock nearly 10 ton each (C). These rocky jetties are located in the Rio Grande City (Rio Grande do Sul State) in southern Brazil.

Fig. 2 in Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

Fig. 2. Components (%N, %W, %F) of the Index of Relative Importance (%IRI) for each of the five major categories of food found in the stomach content of three size classes (A: <400 mm TL; B: 400-500 mm TL; C:>500 mm TL) of the dusky grouper Mycteroperca marginata. The number of individuals analyzed in each size class is 29, 34 and 15, respectively. Mollusks did not occur in the larger size class (> 500 mm TL).

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Fig. 1 in Feeding ecology of Rivulus luelingi (Aplocheiloidei: Rivulidae) in a Coastal Atlantic Rainforest stream, southern Brazil

Fig. 1. Location of the study site in Guaratuba Munipality (black square), Paraná State coast (southern Brazil).

Fig. 6 in Bunocephalus erondinae, a new species of banjo catfish from southern Brazil (Siluriformes: Aspredinidae)

Fig. 6. Map of Rio Grande do Sul, Brazil, and Uruguay showing the distribution of Bunocephalus erondinae. Each square represents one or more collecting localities. "T" indicates the type-locality.

Fig. 5 in Bunocephalus erondinae, a new species of banjo catfish from southern Brazil (Siluriformes: Aspredinidae)

Fig. 5. Lateral view of the caudal skeleton of (a) Bunocephalus erondinae, paratype, MCP 33664 (68.5 mm SL) and of (b) B. doriae, MCP 13176 (50.9 mm SL). Scale bar = 1 mm.

Fig. 2. a in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil

Fig. 2. a) Oligosarcus jacuiensis, new species, MZUSP 104604, 141 mm SL. b) O. acutirostris, MZUSP 90766, 117 mm SL. Right lateral view of premaxillae. Black arrow indicates foramen.

Fig. 1. Bunocephalus erondinae, MCP 40877 in Bunocephalus erondinae, a new species of banjo catfish from southern Brazil (Siluriformes: Aspredinidae)

Fig. 1. Bunocephalus erondinae, MCP 40877, holotype, 82.9 mm SL, canal São Gonçalo, laguna dos Patos system, Pelotas, Rio Grande do Sul, Brazil.

Fig. 4 in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil

Fig. 4. Orbital diameter as a function of standard length for Oligosarcus jacuiensis, new species, and O. jenynsii.

Fig. 4 in Bunocephalus erondinae, a new species of banjo catfish from southern Brazil (Siluriformes: Aspredinidae)

Fig. 4. Dorsal view of the hyoid bar of (a) Bunocephalus erondinae, paratype, MCP 33664 (68.5 mm SL) and of (b) B. doriae, MCP 13176 (50.9 mm SL).AC, anterior ceratohyal; HYP, hypohyal; and PC, posterior ceratohyal. Scale bar = 1 mm.

Fig. 3 in Bunocephalus erondinae, a new species of banjo catfish from southern Brazil (Siluriformes: Aspredinidae)

Fig. 3. Dorsal view of the quadrate and metaperygoid of (a) Bunocephalus erondinae, paratype, MCP 33664 (68.5 mm SL) and of (b) B. doriae, MCP 13176 (50.9 mm SL). MET, metapterygoid, and QUA, quadrate. Scale bar = 1 mm.

Fig. 3 in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil

Fig. 3. Map of central and southeastern South America showing the collecting sites (open dots) and the type-locality (black dot) of Oligosarcus jacuiensis.

Fig. 3 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 3. Monthly variation of mean hepatosomatic index (HSI) for Brachyhypopomus draco males (above) and females (below) from September 2003 to August 2004. Vertical bars represent the standard deviation and the values between the brackets are the sample size.

Fig. 1 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 1. Monthly variation of mean gonadosomatic index (GSI) for Brachyhypopomus draco males (above) and females (below) from September 2003 to August 2004. Vertical bars represent the standard deviation and the values between the brackets are the sample size.

Fig. 4 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 4. Monthly variation of light photoperiod (min) (above); water temperature (ºC), depth (cm) and oxygen saturation (%) (middle); conductivity (µS/cm) and rainfall (mm) (below). Values in lagoa Verde from September 2003 to August 2004.

Fig. 6 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 6. Relative frequency distribution of Brachyhypopomus draco males (n = 175) and females (n = 175) for total length classes sampled from September 2003 to August 2004.

Fig. 5 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 5. Distribution of relative frequency of 150 oocyte diameters of 10 Brachyhypopomus draco females with highest GSI values sampled from September 2003 to August 2004. Vertical bars represent the standard deviation.

Fig. 7 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

Fig. 7. Relative frequency distribution of caudal filament depth levels for Brachyhypopomus draco males. Caudal filaments depth Level 1 = from 0 to 1.5%; Level 2 = from 1.51% to 2.5%; Level 3 = from 2.51% to 3.50%.