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590 results for “Neotropical fish”
FIGURE 1. Gymnotus ardilai. Holotype IAvHP 3477 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 1. Gymnotus ardilai. Holotype IAvHP 3477 (CAR 05), female, 430 mm TL. Lateral view.
FIGURE 4 in Inventory of the freshwater fishes from a densely collected area in South America — a case study of the current knowledge of Neotropical fish diversity
FIGURE 4. Number of freshwater fish species per family in the Rio Grande do Sul State, Brazil.
Fig. 50 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 50. Mimagoniates pulcher, developing male, MNRJ 4233, 37.0 mm SL; anterior 13 anal-fin rays, lateral view, left side.
Fig. 32 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 32. Mimagoniates inequalis, adult male, MCP 9892, 37.0 mm SL; osteology of caudal skeleton and caudal-fin squamation (lower left inset) lateral view, left side. Cartilage represented by crosshatching.
Fig. 3 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 3. Lophiobrycon weitzmani, paratype, adult male, LIRP 4338, 33.1 mm SL, Brazil, Minas Gerais, rio Grande basin, upper rio Paraná, município de Delfinópolis, Estância Carmen Sílvia, córrego Bom Jesus. Modified from Castro et al. (2003).
Fig. 1. Cladogram depicting hypothesized relationships among Clade A in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Fig. 1. Cladogram depicting hypothesized relationships among Clade A characids as modified here from Malabarba & Weitzman (2003) with indication of non-inseminating and inseminating groups.
FIGURE 2 in Genetic evidence supports polygamous mating system in a wild population of Prochilodus lineatus (Characiformes: Prochilodontidae), a Neotropical shoal spawner fish
FIGURE 2 | Alternative schematic representations of spawning in Prochilodus lineatus. A. Schematic drawing of spawning moment of Prochilodus lineatus (=Prochilodus scrofa), according to Godoy (1975), whom described that males, positioned in the center of the river channel, performed distinctive sounds, possibly attracting females (figure drawn by Josiane Ribolli and Dennis Fernando Moreno, inspired from the original by Godoy, M. P, 1975, fig. 153, p.684); B. Hypothetical schematic representation of reproduction and spawning of P. lineatus in the wild according to direct observations made by Evoy Zaniboni-Filho (personal communication). The exhausted mature female is marked with an asterisk. Figure drawn by Josiane Ribolli and Dennis Fernando Moreno.
FIGURE 1 in Genetic evidence supports polygamous mating system in a wild population of Prochilodus lineatus (Characiformes: Prochilodontidae), a Neotropical shoal spawner fish
FIGURE 1 | Inferred parentage and mating patterns derived from analysis of 87 Prochilodus lineatus larvae sampled at the Middle Uruguay River in Brazil. A. Number of adults identified as parents of the sampled larvae; B. Number of different mates inferred for males and females.
FIGURE 5 in Habitat and community structure modulate fish interactions in a neotropical clearwater river
FIGURE 5 | Agonistic interactions between fishes in three habitats of the Olho d´Água River, upper Paraguay River basin, Brazil. Arrow thickness is proportional to agonistic interaction intensity in all three habitats; grey circles are proportional to the mean abundance of each species. Ast lac = Astyanax lacustris, Ast lin = Astyanax lineatus, Ast mar = Astyanax marionae, Bry mel = Bryconops melanurus, Cha spp = Characidium spp., Cre lep = Crenicichla lepidota, Cre vit = Crenicichla vittata, Hyp equ = Hyphessobrycon eques, Jup aca = Jupiaba acanthogaster, Lep vit = Leporellus vittatus, Moe bon = Moenkhausia bonita, Odo peq = Odontostilbe pequira, Par nas = Parodon nasus, Pro lin = Prochilodus lineatus, Ser cal = Serrapinnus calliurus.
FIGURE 4 in Habitat and community structure modulate fish interactions in a neotropical clearwater river
FIGURE 4 | Principal coordinate analysis (PCoA) and permutational analysis of variance (PERMANOVA) to demonstrate feeding pressure variation among habitats accounting for A. species and B. trophic groups, points sized according to the sum of the feeding pressure in the sample (logarithm scaled for better visualization). Red lines indicate significative variables (p <0.05) while black lines non-significative. Anc spp = Ancistrus spp., Ast lac = Astyanax lacustris, Ast lin = Astyanax lineatus, Ast mar = Astyanax marionae, Bry hil = Brycon hilarii, Cha spp = Characidium spp., Cic dim = Cichlasoma dimerus, Cre lep = Crenicichla lepidota, Hyp equ = Hyphessobrycon eques, Jup aca = Jupiaba acanthogaster, Lep fri = Leporinus friderici, Meg mac = Megaleporinus macrocephalus, Lep str = Leporinus striatus, Lep vit = Leporellus vittatus, Odo peq = Odontostilbe pequira, Par nas = Parodon nasus, Pro lin = Prochilodus lineatus, Ser cal = Serrapinnus calliurus.
Fig. 7 in Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas
Fig. 7. Integrated biomarkers response index (IBR) values for each experimental site along Água das Araras stream (S1, S2, S3, S4, and S5) where in situ tests were performed. Biomarkers results are represented in relation to the reference site (0). The area above 0 reflects induction of the biomarker, and below 0 indicates reduction of the biomarker.
Fig. 5 in Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas
Fig. 5. Activity (mean ± SEM, n = 8) of acetylcholinesterase in muscle (A) and brain (B) of A. altiparanae exposed in situ for seven days in five sites along Água das Araras stream (S1, S2, S3, S4, and S5) and in a reference site (Ref). Different letters indicate significant differences between sites (P <0.05).
Fig. 1 in Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas
Fig. 1. Maps are showing South America (A), Paraná State (B) and Água das Araras stream (C) indicating the five experimental sites along of the stream (S1, S2, S3, S4, and S5) and the reference site (Ref), which is a small stream within a forest fragment named "Parque Estadual Mata São Francisco".
Fig. 1 in The effect of structural enrichment in hatchery tanks on the morphology of two neotropical fish species
Fig. 1. Schematic drawing of the four types of structuring applied in the tanks: Control: the tank did not receive any type of structuring; Logs: the tank was structured with six eucalyptus tree logs, set in the middle of the tank so that they were submersed after the tank was filled. Three of the logs were arranged along the tank and the other three were arranged perpendicular; Artificial macrophytes: the tank received plastic macrophytes hung on a kind of clothesline placed above the tank, so that the plastic filaments came in contact with the water. Each tank received twenty five plastic macrophytes, arranged in five parallel rows of five plants each; Logs and artificial macrophytes: the tank received both types of structures, submersed logs and artificial macrophytes.
FIGURE 2 in Seeking for gaps in taxonomic descriptions of endemic fishes: a pathway to challenge the Linnean shortfall in a Neotropical basin
FIGURE 2 | Accumulation curve considering the taxonomic description of endemic fish species made between 1758 and 2023 in the Tocantins-Araguaia River basin, Brazil.
FIGURE 3 in Seeking for gaps in taxonomic descriptions of endemic fishes: a pathway to challenge the Linnean shortfall in a Neotropical basin
FIGURE 3 | Results of cross-site analysis between the number of endemic fish species descriptions and sampling effort (A), and cross-species analysis between the year of description and altitude (B), and fish body size of endemic species (C).
Fig. 24 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 24. Cynodon septenarius, new species, holotype, MZUSP 32590, mm SL, Brazil, Amazonas, Rio Tefe´, SupiãPucu.
Fig. 15 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 15. Weberian apparatus of Hydrolycus armatus, MZUSP 32607; left side, lateral view, anterior to left.
Fig. 14 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 14. Weberian apparatus of Cynodon gibbus, MZUSP 32587; left side, lateral view, anterior to left.
Fig. 10 in The Neotropical Fish Subfamily Cynodontinae (Teleostei: Ostariophysi: Characiformes): A Phylogenetic Study and a Revision of Cynodon and Rhaphiodon
Fig. 10. Symplectic and adjoining bones of (A) Hydrolycus armatus, MZUSP 32607; (B) Acestrorhynchus lacustris, MZUSP 27893; and (C) Hoplias sp., MZUSP 32372; left side, medial view, anterior to right.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.