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590 results for “Neotropical fish”
Fig. 62 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 62. Mimagoniates lateralis. Caudal peduncle depth as function of SL by sex.
Fig 43 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig 43. Mimagoniates barberi, dorsal-fin length as function of SL by sex.
Fig. 44 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 44. Mimagoniates barberi, caudal peduncle depth as function of SL by sex.
Fig. 2 in The effect of structural enrichment in hatchery tanks on the morphology of two neotropical fish species
Fig. 2. The number of individuals for each species per class of standard length for each treatment.
Fig. 18 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 18. Left pectoral girdle of Hydrolycus armatus, MZUSP 32607; lateral view, anterior to left.
Fig. 17 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 17. Left pectoral girdle of Hydrolycus armatus, MZUSP 32607; medial view, anterior to right.
Fig. 26. Rhaphiodon vulpinus, MZUSP 32809, 305 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 26. Rhaphiodon vulpinus, MZUSP 32809, 305 mm SL, Brazil, Para´, Rio Xingu, Belo Monte.
Fig. 19 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 19. Caudal skeleton of Cynodon gibbus, MZUSP 32587; left side, lateral view, anterior to left.
Fig. 28 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 28. Rhaphiodon vulpinus, holotype, MHNN 822, 303 mm SL, Brazil.
Time-calibrated phylogeny of Neotropical Freshwater Fishes
<p>The Neotropical Freshwater Fish (NFF) fauna exhibits the greatest phenotypic disparity and species richness among all continental aquatic vertebrate faunas, with more than 6,345 species distributed across the mostly tropical regions of Central and South America. The two several decades have seen a proliferation of molecular phylogenies, often at the species level, covering almost all 875 valid NFF genera. This study presents the most comprehensive genome-wide, time-calibrated phylogenetic hypothesis of NFF species to date, based on DNA sequences generated over decades through collaborative efforts of the multinational ichthyological research community. Our purpose is to compile an extensive dataset and organize it systematically, allowing for continuous refinement and expansion, thereby enabling researchers to evaluate macroevolutionary hypotheses in the NFF. Using thousands of DNA sequences from dozens of studies, we compiled a supermatrix of 51 markers across 5,984 taxa, comprising 3,167 species representing 50% of NFF species, and estimating divergence times based on a fossil-calibrated phylogenomic tree of fishes. We used this dataset to infer the most species-rich time-calibrated phylogeny of the NFF taxa to date, summarizing the collective efforts of the ichthyological research community since the midpoint of the last century. We hope this dataset provides a framework for forthcoming evolutionary studies of the NFF fauna, documenting macro-scale patterns in the world's most diverse continental vertebrate fauna.</p>
Fig. 1 in The dawn of phylogenetic research on Neotropical fishes: a commentary and introduction to Baskin (1973), with an overview of past progress on trichomycterid phylogenetics
Fig. 1. Title page and examiners' page of Baskin (1973).
Fig. 2 in Effect of anesthetic, tag size, and surgeon experience on postsurgical recovering after implantation of electronic tags in a neotropical fish: Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)
Fig. 2. Examples of tag expulsion (left) and antenna migration (right) of Prochilodus lineatus.
Fig. 3 in Effect of anesthetic, tag size, and surgeon experience on postsurgical recovering after implantation of electronic tags in a neotropical fish: Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)
Fig. 3. Healthy (left) and infected (right) viscera on necropsy of Prochilodus lineatus.
Fig. 1 in Effect of anesthetic, tag size, and surgeon experience on postsurgical recovering after implantation of electronic tags in a neotropical fish: Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)
Fig. 1. Criteria and examples for the surgical and postsurgical rankings.
FIGURE 31 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 31 | Holotype of Rhamphichthys lineatus, MNHN 3982, 530 mm LEA, lake near Río Ucayali, Peru.
FIGURE 33 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 33 | Rhamphichthys lineatus, UF 116566, 390 mm LEA, Río Nanay, Loreto, Peru.
FIGURE 38 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 38 | Holotype of Rhamphichthys marmoratus, MNHN 3959, Rio Araguaia, Brazil.
FIGURE 63 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 63 | Distribution of Rhamphichthys rostratus based on examined museum specimens.
TABLE 2 in Seeking for gaps in taxonomic descriptions of endemic fishes: a pathway to challenge the Linnean shortfall in a Neotropical basin
<p><b>TABLE 2 |</b> Statistics of the multiple linear regression between the year of description of endemic fish species and altitude and fish body size (Cross-species analysis). P values in bold indicate significant results (p <0.05). SE = Standard error.</p><table><tbody><tr><th></th><th><b>Estimate</b></th><th><b>SE</b></th><th><b>t value</b></th><th><b>p value</b></th></tr></tbody><tbody><tr><th><b>Intercept</b></th><td>1991.44</td><td>2.378</td><td>837,28</td><td><0.001</td></tr><tr><th><b>Altitude</b></th><td>8.03</td><td>2.445</td><td>3.28</td><td><b>0.001</b></td></tr><tr><th><b>Fish body size</b></th><td>-11.05</td><td>2.445</td><td>-4.52</td><td><0.001</td></tr></tbody></table>
TABLE 1 in Seeking for gaps in taxonomic descriptions of endemic fishes: a pathway to challenge the Linnean shortfall in a Neotropical basin
<p><b>TABLE 1 |</b> Statistics of the linear regression between the number of descriptions of endemic fish species and the sampling effort (Cross-sites analysis). P value in bold indicate significant results (p <0.05). SE = Standard error.</p><table><tbody><tr><th></th><th><b>Estimate</b></th><th><b>SE</b></th><th><b>t value</b></th><th><b>p value</b></th></tr></tbody><tbody><tr><th><b>Intercept</b></th><td>-0.22</td><td>0.079</td><td>-2.88</td><td>0.004</td></tr><tr><th><b>Sampling effort</b></th><td>0.29</td><td>0.03</td><td>8.91</td><td><0.001</td></tr></tbody></table>
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