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42 results for “Spintherobolus”
Fig. 9. Spintherobolus ankoseion, USNM 297935 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 9. Spintherobolus ankoseion, USNM 297935, adult male, 24.5 mm SL. Anal-fin rays and associated pterygiophores, left side, anterior to right.
Fig. 16. Spintherobolus papilliferum, MZUSP 49408 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 16. Spintherobolus papilliferum, MZUSP 49408, adult female, 50.4 mm SL. Area of the anterior and posterior pseudotympanums of left side, anterior is to the right. The skin and scales were removed, exposing the muscles of the lateral body wall, pleural ribs of the fifth and sixth vertebrae (first and second pleural ribs), and the black, pigmented wall of the swimbladder. The larger black area to the left represents the pseudotympanum present in all cheirodontines. The somewhat obscured apical black area in the right upper part of the photograph is the area of the anterior pseudotympanum characteristic of the species of Spintherobolus. However, in adult S. papilliferus the anterior pseudotympanum is, in part, obscured by muscle tissue.
Fig. 6 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 6. Spintherobolus leptoura, paratype, MCP 19254, adult female, 25.4 mm SL. Anterior and posterior pseudotympanums of left side. The skin and scales were removed, exposing the muscles of the lateral body wall, pleural ribs of the fifth and sixth vertebrae (first and second pleural ribs), and the black, pigmented wall of the swimbladder. The larger black area to the right represents the pseudotympanum present in all Cheirodontines, while the black area to the left is the area of the pseudotympanum characteristic of the species of Spintherobolus.
Fig. 13. Spintherobolus ankoseion, infraorbital bones. a, USNM 297935 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 13. Spintherobolus ankoseion, infraorbital bones. a, USNM 297935, adult female, 24.6 mm SL; b, USNM 297935, adult male, 24.5 mm SL.
Fig. 17. Spintherobolus papilliferus, MZUSP 51022 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 17. Spintherobolus papilliferus, MZUSP 51022, juvenile, 23.9 mm SL. Anterior and posterior pseudotympanums of left side, anterior is to the right. The skin and scales were removed, exposing the muscles of the lateral body wall, pleural ribs of the fifth and sixth vertebrae (first and second pleural ribs), and the black, pigmented wall of the swimbladder. The larger black area to the left represents thepseudotympanum present in all cheirodontines, while the black area to the right is the area of the anterior pseudotympanum character istic of the species of Spintherobolus.
Fig. 4. Spintherobolus broccae, USNM 287324 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 4. Spintherobolus broccae, USNM 287324, adult male, 17.9 mm SL. Head and anterior body region, right side. Two pseudotympanums, black areas are located posterior to the dorsal portion of the opercular opening. The posterior pseudotympanum is homologous with the single pseudotympanum of other Cheirodontines while the anterior pseudotympanum is found only in Spintherobolus. The small dark dots arranged in rows arer the neuromast pattern over the face and opercular region. In the region ventral to the pectoral fin a few neuromasts can be seen partly bordering the scales. Such neuromasts are also present in the dorsal or back region. However, these are sometimes hard to distinguish from the somewhat larger dark chromatophores that often have somewhat indistinct borders. The rows of neuromasts are especially clear in the infraorbital region and on the dentary.
Fig. 11. Spintherobolus papilliferus, MZUSP 51021, female 60.8 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 11. Spintherobolus papilliferus, MZUSP 51021, female 60.8 mm SL. Dorsum of head and back nearly to dorsal-fin origin. Neuromasts are present in the irregular grooves between the eyes and the supraoccipital region but these are nearly impossible to see in the photograph. A bilaterally distributed row of neuromasts runs along the long axis of the body between the nares. This row of neuromasts shows more clearly on the left side than on the right side of the top of the head.
Fig. 3. A in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 3. A phylogeny of Spintherobolus and related cheirodontine taxa based on consensus tree of 3 equally parsimonious cladograms. Tree statistics: Tree Length = 49, Consistency Index = 0.796, Retention Index = 0.867.
Fig. 5 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 5. Spintherobolus ankoseion, paratype, MCP 19253, adult female, 25.2 mm SL. Anterior and posterior pseudotympanal region of left side, anterior is to the left. The skin and scales were removed, exposing the muscles of the lateral body wall and the pleural ribs of the fifth and sixth vertebrae (first and second pleural ribs). The black, pigmented swimbladder walls (the actual pseudotympanums) of both the anterior and posterior pseudotympanal regions have been removed, showing the black interior of the swimbladder.
Fig. 10. Spintherobolus papilliferus, MNRJ 4237 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 10. Spintherobolus papilliferus, MNRJ 4237, female, 34.7 mm SL, head region, left side, Brazil, São Paulo, rio Ipiranga. Rows of neuromasts occur over the infraorbital, preopercular, and opercular region. These are distributed in shallow grooves that can be seen in the photograph. The neuromasts are also distributed on the scale borders posterior to the head and operculum but these are hard to distinguish from dark chromatophores in the photograph. A row of neuromasts along the ventral border of the dentary is hidden in a deep groove. The small dark dots arranged in rows are the neuromast patterns over the face and opercular region. In the region ventral to the pectoral fin a few neuromasts can be seen partly bordering the scales. Such neuromasts are also present in the dorsal or back region. However, these are sometimes hard to distinguish from the somewhat larger dark chromatophores that often have somewhat indistinct borders. The rows of neuromasts are especially clear in the infraorbital region.
Fig. 7 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 7. Odontostilbe sp., MCP 11136, adult male 37.0 mm SL. SEM photograph of a frontal view of the anterior three premaxillary teeth of the right side. Illustrated for each tooth are a pedicles and a flattened, expanded distal region bordered by approximately 10 tooth cusps. Scale marker = 100 μm.
Fig. 8. Spintherobolus ankoseion, USNM 297935 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 8. Spintherobolus ankoseion, USNM 297935, adult male, 24.5 mm SL. Osteology of ventral procurrent caudal-fin rays and associated bony structures, anterior to right.
FIGURE 4 in Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes)
FIGURE 4 | Maximum likelihood tree of species of Spintherobolus based on partial sequences of the COI gene (531 bp). Numbers represent voucher specimens deposited in LBP (Tab. 1). Vouchers LBP 101792 and 101793 are from rio Ribeira de Iguape drainage, municipality of Juquitiba, and voucher LBP 61600 is from rio Sertãozinho, rio Itapanhaú drainage, municipality of Bertioga, both São Paulo State, Brazil.
FIGURE 3 in Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes)
FIGURE 3 | A. Boxplot for dependent variables body depth (BD), predorsal distance (PD), preanal distance (PA), caudal-peduncle depth (CPD), and upper jaw length (UJL) of Spintherobolus papilliferus from the three drainages: Itapanhaú (IT), Ribeira de Iguape (RI), and upper rio Tietê (UT). B. Scatter plot of LDA features for distinct drainages Itapanhaú (IT – red dots), Ribeira de Iguape (RI – green dots), and upper rio Tietê (UT – blue dots).
FIGURE 5 in Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes)
FIGURE 5 | Map of southeastern South America showing a detail of the map of São Paulo State (dark grey in small map) and the three drainages discussed in this study: upper rio Tietê (yellow), rio Itapanhaú (pink) and rio Ribeira de Iguape (green). Localities 1–4 belong to the upper rio Tietê, locality 5 belongs to rio Itapanhaú and locality 6 belongs to rio Juquiá, rio Ribeira de Iguape drainages. PE = Parque Estadual.
FIGURE 2 in Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes)
FIGURE 2 | Stream stretch affluent of rio Juquiá, rio Ribeira de Iguape, municipality of Juquitiba, São Paulo State, where specimens of Spintherobolus papilliferus were sampled for this study. A. General view showing rapids in the background. B. Rapids pool where specimens were caught.
FIGURE 1 in Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes)
FIGURE 1 | Spintherobolus papilliferus sampled in an affluent of rio Juquiá, rio Ribeira de Iguape drainage, municipality of Juquitiba, São Paulo State, Brazil. A. Live specimen right after capture. B. LISO 426, fixed specimen, 33.0 mm SL. Scale bar = 10 mm.
Fig. 19 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 19. Alternate cladograms of the relationships of the species of Spintherobolus.
Fig. 12. Spintherobolus ankoseion, USNM 297935 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 12. Spintherobolus ankoseion, USNM 297935, adult male, 24.5 mm SL. Jaws & teeth.
Fig. 2. Spintherobolus broccae, USNM 287324 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil
Fig. 2. Spintherobolus broccae, USNM 287324, adult male, 18.2 mm SL, Brazil, Rio de Janeiro.
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