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8 results for “Pseudobarbus afer”
Figure 4 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 4 - Scatter plots of scale counts and selected morphometric characters of Pseudobarbus afer s.s., Pseudobarbus senticeps and Pseudobarbus swartzi sp. n.
Figure 5 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 5 - Live colours of Pseudobarbus afer s.s (SAIAB 203790) from the Waterkloof River, Swartkops River system, Pseudobarbus senticeps (RS17AL01) from the source pool in the Upper Krom River system and Pseudobarbus swartzi sp. n. (SAIAB 203792) from a tributary of the Wabooms River, Gamtoos River system.
Figure 3 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 3 - a Scatter plot of PC1 against PC2 for a PCA carried out on five raw meristic characters (scale counts) for 162 specimens of the Pseudobarbus afer complex b Scatter plot of PC1 against PC2 for a PCA carried out on 17 morphometric characters for 154 specimens of the Pseudobarbus afer complex. Syntypes were not included in the analyses as all three specimens are in very poor condition, with very few intact scales, flaccid bodies and damaged fins. The plots indicate that Pseudobarbus senticeps, Pseudobarbus afer s.s. and Pseudobarbus swartzi can be clearly separated based on scale counts, but the three species show considerable overlap in morphological characters.
Figure 7 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 7 - Map of the eastern Cape Fold Ecoregion showing confirmed distributions of Pseudobarbus senticeps (turquois diamonds) restricted to the Krom River system), Pseudobarbus swartzi sp. n. (blue squares) (restricted to the Gamtoos River system and the Kabeljous and Seekoei Rivers) and Pseudobarbus afer s.s (red circles)(Baakens, Swartkops and Sundays River systems) based on recent surveys (2000–2016). Additional surveys are required to more accurately map the distribution ranges of these species in the Krom, Gamtoos, Swart, Kabeljous, Baakens and Sundays, and determine the status of populations in the Seekoei and Maitland River systems (open squares).
Figure 2 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 2 - Bayesian phylogenetic tree showing genetic distances between Pseudobarbus afer s. s, Pseudobarbus senticeps and Pseudobarbus swartzi sp. n. and their relationships with the other single barbeled Pseudobarbus species and lineages in the Cape Fold Ecoregion of South Africa. Bayesian posterior probabilities are shown on the branches. The symbols correspond to the distribution map of the three species in Figure 7.
Figure 8 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 8 - a An illustration of part of the Cape Fold Belt showing the drainage of the Gamtoos River system, sites of drainage capture of adjacent river systems and historical direction of flow of captured rivers (modified from Skelton, 1980) b Part of the eastern Cape Fold Ecoregion showing reconstructed Palaeoriver systems during the Last Glacial Maximum (modified from Swartz et al., 2007). The numerals represent present day river systems in the study area for the present study: 1, Krom; 2, Seekoei; 3, Swart; 4, Kabeljous; 5, Gamtoos; 6, Van Stadens; 7, Maitland; 8, Baakens; 9, Swartkops; 10, Coega; 11, Sundays).
Figure 6 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 6 - Preserved colours of Pseudobarbus afer s.s topotype (SAIAB 203790) from the Waterkloof River, Swartkops River system, Pseudobarbus senticeps holotype (SAIAB 304) from the Assegaaibosch River, Krom River system, Pseudobarbus senticeps topotype (SAIAB 200302) from the Assegaaibosch River, Krom River system, and Pseudobarbus swartzi sp. n. holotype (SAIAB 203792) from a tributary of the Wabooms River, Gamtoos River system. Note the differences in the arrangement of melanophores which produces distinct patterns on the latero-ventral scales of the three species.
Figure 1 from: Chakona A, Skelton PH (2017) A review of the Pseudobarbus afer (Peters, 1864) species complex (Teleostei, Cyprinidae) in the eastern Cape Fold Ecoregion of South Africa. ZooKeys 657: 109-140. https://doi.org/10.3897/zookeys.657.11076
Figure 1 - Distribution of the Eastern Cape redfin, Pseudobarbus afer, as presently described.
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