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215 results for “characids”
Fig. 3 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 3. Bryconadenos tanaothoros, new species, MCP 30516, SL 32.0 mm, adult female. Brazil: Mato Grosso, córrego Tatu, on the road MT-423, GPS coordinates 11°28'36"S 54°58'47"W. Adult female freshly fixed in formalin. The dark chromatophores of this specimen associated with the lateral line are displayed almost evenly throughout the lateral line's length. The anal fin shows no evidence of a gland.
Fig. 2 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 2. Bryconadenos tanaothoros, new species, MCP 29476, SL 43.5 mm, adult male. Brazil: Mato Grosso, rio Ferro on the road between Novo Mato Grosso and Nova Ubiratã, about 25 km SW of Novo Mato Grosso, upper rio Xingu basin, GPS coordinates 13°3'32"S 55°2'12"W. Sexually active male specimen freshly fixed in formalin. The dark chromatophores of this specimen associated with the lateral line are contracted and barely visible anteriorly and do not show at all posteriorly. The position of the anal-fin gland can be seen as a yellowish brown oval area just posterior to the proximal end of the white pigment along the anterior border of the anal fin.
Fig. 10 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 10. Pelvic fin length as a function of SL by sex for males = S and females = z of Bryconadenos tanaothoros. For explanation see text under sexual dimorphism.
Fig. 8 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 8. Bryconadenos tanaothoros, new species, USNM 352061, paratype, SL 34.4 mm, adult female. Lateral view of left side of anterior region of anal fin illustrating absence of glandular organ. Brazil: Mato Grosso: tributary to rio Suiazinho, near Ribeirão Cascalheira.
Fig. 6 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 6. Attonitus irisae, Vari & Ortega USNM 349698, SL 45.5 mm, adult male. Lateral view of left side of entire anal fin showing fusion of pterygiophores and respective medial radials of anterior two branched rays. Note that the pterygiophores bear anterior and posterior median blades for the origin of the large erectors and depressors anales muscles. Peru: Huanuco; Pachitea, río Huambo at mouth into río Pachitea.
Fig. 1 in Influence of feeding plasticity on the fitness of small Neotropical characids
Fig. 1. Study area in the Pantanal of Mato Grosso do Sul State, Brazil. A and B indicate the sampling sites in lagoons associated with the Miranda River.
Fig. 2 in Influence of feeding plasticity on the fitness of small Neotropical characids
Fig. 2. Food resources (% IAi) consumed by Hyphessobrycon eques, Odontostilbe pequira, Psellogrammus kennedyi and Serrapinnus calliurus, in the lagoons A and B (Ain, aquatic invertebrates; Tin, terrestrial invertebrates; Tes, Testacea; FSc, fish scale; Pla, plant; Alg, algae; Det, detritus).
FIGURE 2 in Radiotagging a long-distance migratory characid fish: reproduction after surgery, tag losses, and effects in weight
FIGURE 2 | Percentage weight variation of fish that remained alive in the pond until the end of the experiment. Tagging occurred in 16–18/11/2016, survey 1 in 24/08/2016, survey 2 in 28/09/2016, survey 3 in 21/10/2016, survey 4 in 09/11/2016, and survey 5 in 03/05/2017. Reproduction occurred between survey 4 and survey 5.
FIGURE 1 in Radiotagging a long-distance migratory characid fish: reproduction after surgery, tag losses, and effects in weight
FIGURE 1 | Mortality by event, treatment, and sex. Tagging occurred in 16–18/11/2016, survey 1 in 24/08/2016, survey 2 in 28/09/2016, survey 3 in 21/10/2016, survey 4 in 09/11/2016, and survey 5 in 03/05/2017. Reproduction occurred between survey 4 and survey 5. We excluded fishes with unidentified sex from the figure.
Fig. 2 in Diet-morphology relationship in the stream-dwelling characid Deuterodon stigmaturus (Gomes, 1947) (Characiformes: Characidae) is partially conditioned by ontogenetic development
Fig. 2. Principal Coordinate Analysis (PCoA) showing PCo1 and PCo2 based on Bray-Curtis dissimilarities of diet composition of 75 individuals of the stream-dwelling characid Deuterodon stigmaturus. Food items name abbreviations are listed in Table 3.
Fig. 1 in Diet-morphology relationship in the stream-dwelling characid Deuterodon stigmaturus (Gomes, 1947) (Characiformes: Characidae) is partially conditioned by ontogenetic development
Fig. 1. Location of the sampling site of Deuterodon stigmaturus (black dot) in the Paraíso stream, a tributary of the Mampituba River in Southern Brazil coastal region, between Rio Grande do Sul (RS) and Santa Catarina (SC) states.
Fig. 5 in Diet-morphology relationship in the stream-dwelling characid Deuterodon stigmaturus (Gomes, 1947) (Characiformes: Characidae) is partially conditioned by ontogenetic development
Fig. 5. Relationships between diet composition of Deuterodon stigmaturus summarized by the PCo1 of a Principal Coordinate Analysis (PCoA) and intestine length independent of standard length (ILresiduals). Higher PCo1 values indicate a greater proportion of terrestrial plants (Terrplant) and lower values indicate a greater proportion of filamentous algae (Filalgae). Sampling months (dashed lines) were used as random effect variable and IL
Fig. 4 in Diet-morphology relationship in the stream-dwelling characid Deuterodon stigmaturus (Gomes, 1947) (Characiformes: Characidae) is partially conditioned by ontogenetic development
Fig. 4. Relationships between diet composition of Deuterodon stigmaturus summarized by the PCo1 of a Principal Coordinate Analysis (PCoA) and the standard length (SL) of individuals. Higher values of PCo1 indicate a greater proportion of terrestrial plants (Terrplant) and lower values indicate a greater proportion of filamentous algae (Filalgae) ingested by individuals. Sampling months (dashed lines) were used as random effect variable and SL was used as a fixed effect (solid line) variable to fit a linear mixed-effects model.
FIGURE 6 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 6 | Psalidodon jequitinhonhae. Two live specimens from Fanado River, tributary of Araçuaí River, Barragem das Almas, Minas Novas Municipality, Minas Gerais State, Brazil, Jequitinhonha River basin, 17°14'16.1"S 42°35'25.9"W. MZUEL 16425, not measured. Photo: José L. O. Birindelli.
FIGURE 5 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 5 | Psalidodon jequitinhonhae, LBP 8311, 55.9 mm SL. To the left: lateral view of maxillary, premaxillary and dentary teeth. To the right: medial view of premaxillary and dentary teeth.
FIGURE 4 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 4 | Psalidodon jequitinhonhae. Specimens from Jequitinhonha River, Itaobim Municipality, Minas Gerais State, Brazil, 16°30'36"S 41°20'02"W. LBP 8311, male, 57.7 mm SL, female, 57.4 mm SL.
FIGURE 1 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 1 | A. Tetragonopterus rutilus var. Jequitinhonhae [sic] as illustrated by Steindachner (1877: plate II, fig. 3). B. Astyanax fasciatus jequitinhonhae as illustrated by Eigenmann (1921: plate 50, fig. 3; MCZ 20901; 83 mm; Jequitinhonha Rive, Brazil.
FIGURE 3 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 3 | Neighbor-joining tree based on p-distance model generated with a sequence fragment of the gene COI with 197 base pairs. The tree includes the lectotype of Tetragonopterus rutilus jequitinhonhae (NWM 57760:2) (dark blue) and species of the stethaprionine genera Psalidodon, Astyanax, Andromakhe, and Deuterodon. Sequences obtained from modern specimens of P. jequitinhonhae in light blue. Rooted in Serrapinnus heterodon.
FIGURE 7 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 7 | Distribution map of Psalidodon jequitinhonhae, encompassing its occurrence in the Jequitinhonha and Pardo river basins, Minas Gerais and Bahia States, Brazil.
Fig. 4 in A new genus and species of characid fish from the Amazon basin - the recognition of a relictual lineage of characid fishes (Ostariophysi: Cheirodontinae: Cheirodontini)
Fig. 4. Lateral view (left side) of the head of the holotype of Amazonspinther dalmata showing the pattern of neuromasts distribution (MCP 38623, 19.63 mm SL).
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