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162 results for “Brycon”
Fig. 3 in Genetic diversity and population structure of Brycon nattereri (Characiformes: Bryconidae): a Neotropical fish under threat of extinction
Fig. 3. Haplotype network based on partial sequencing of the D-loop region (mtDNA) of 92 individuals of Brycon nattereri from the Laranjinha River. Circle sizes are pro- portional to haplotype frequency.
FIGURE 2 in A new species of Auriculostoma (Trematoda: Allocreadiidae) from the intestine of Brycon guatemalensis (Characiformes: Bryconidae) from the Usumacinta River Basin, Mexico, based on morphology and 28 S rDNA sequences, with a key to species of the genus
FIGURE 2. Scanning electron micrographs of Auriculostoma lobata n. sp. (A) Anterior end with oral sucker bearing muscular lobe on either side, genital atrium and ventral sucker. (B) Pair of muscular lobes with a short posterior ‘‘ free’ ’ end, and 4 apical dome-like papillae (white arrows). (C) Lateral view of muscular lobe. (D) Distribution of dome-like papillae over oral sucker, 6 anterior (white arrows), 4 on the inner surface (white triangle), and 5 on the outer surface (white arrows).
Fig. 2 in Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855) (Characidae: Bryconinae) in the wild, with a note on following behavior
Fig. 2. Mean values of proportion of time expressing different foraging tactics by Brycon devillei for each season in the RPSP, between July 2006 and April 2009.
Fig. 3 in Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855) (Characidae: Bryconinae) in the wild, with a note on following behavior
Fig. 3. Two individuals of Brycon devillei aligned sideways to the timburé, Leporinus garmani, on a sand bank in the rio Preto channel. Photo by P. G. Azevedo.
Figure 1 in Anatomical and histological traits of Brycon amazonicus liver cultivated in a semi-intensive system
Figure 1. Graphical representation resulting from the analysis of the weight-length ratio of B. amazonicus cultivated semi-intensively, in four stages of body growth.
Figure 4 in Anatomical and histological traits of Brycon amazonicus liver cultivated in a semi-intensive system
Figure 4. Microscopic image of Brycon amazonicus liver from semi-intensive cultivation. Note the cordonal aspect of the hepatocytes, the absence of lobulation and the presence of blood vessels without pancreatic tissue wrap (arrowhead) and with pancreatic cells surrounding them (arrow). HE, 200X. Bar = 50µm.
Figure 3 in Anatomical and histological traits of Brycon amazonicus liver cultivated in a semi-intensive system
Figure 3. Behavior of semi-intensively cultivated Brycon amazonicus hepatosomatic relationship, according to body growth. Different letters represent significant differences between groups (P <0.05).
Figure 2 in Anatomical and histological traits of Brycon amazonicus liver cultivated in a semi-intensive system
Figure 2. Brycon amazonicus liver after removal of the celomatic cavity and dissection of an individual belonging to the PIII. Note the hepatic lobation and gallbladder (G) located next to the right hepatic lobe, and the red-brown color of de liver.
Fig. 1 in Fresh, equilibrated and post-thaw sperm quality of Brycon orbignyanus (Valenciennes, 1850) and Prochilodus lineatus (Valenciennes, 1837) treated with either salmon GnRHa and domperidone or pituitary extract
Fig. 1. Motility rate of fresh, equilibrated and post-thaw sperm of Brycon orbignyanus (A; n = 18 males) and Prochilodus lineatus (B; n = 21 males). Motility rate was evaluated after 0, 20, 40 and 60s (fresh and equilibrated sperm) or after 10, 30, 50 and 70s of activation (post-thaw sperm). *Motility evaluated at 60s was lower than that at 0s post-activation (Scott-Knott, P <0.05). § Motility evaluated at 10s post-activation was the highest (Scott-Knott, P <0.05).
Fig. 2 in Fresh, equilibrated and post-thaw sperm quality of Brycon orbignyanus (Valenciennes, 1850) and Prochilodus lineatus (Valenciennes, 1837) treated with either salmon GnRHa and domperidone or pituitary extract
Fig. 2. Post-thaw sperm velocities (curvilinear = VCL; straight-line = VSL; average path = VAP) of Brycon orbignyanus (A; n = 18 males) and Prochilodus lineatus (B; n = 21 males) evaluated after 10, 30, 50 and 70s after activation. * Mean at 10s was the highest (Scott-Knott, P <0.05).
Fig. 3 in Influence of a large dam and importance of an undammed tributary on the reproductive ecology of the threatened fish matrinxã Brycon orthotaenia Günther, 1864 (Characiformes: Bryconidae) in southeastern Brazil
Fig. 3. Histological sections of Brycon orthotaenia testis stained with Hematoxilin-eosin: (a) resting stage with seminiferous tubules cointaining only spermatogonia (S), (b)(c) maturing/mature with seminiferous tubules full of spermatozoa (Z) in acidophilic secretion (arrows) and (d) spent testis with few spermatozoa (Z) in the lumen (L) in acidophilic secretion (arrow). Bar = (a) 30 µm, (b), (d) 70 µm, (c) 80 µm.
Fig. 1 in Influence of a large dam and importance of an undammed tributary on the reproductive ecology of the threatened fish matrinxã Brycon orthotaenia Günther, 1864 (Characiformes: Bryconidae) in southeastern Brazil
Fig. 1. Location of the study sites of the upper rio São Francisco, downstream from the Três Marias Dam, Minas Gerais State (MG), Brazil. Site 1, immediately downstream from the Três Marias Dam and site 2, below the confluence with the rio Abaeté.
Fig. 6 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 6. Olfactory epithelium of representatives of Otophysi. a. Cyprinus carpio (Cypriniformes); b. Brycon orbignyanus (Characiformes); c. Pimelodus maculatus (Siluriformes) and; Sternopygus macrurus (Gymnotiformes). Scale bars = 1 mm.
Fig. 5 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 5. Brain of Gymnotus carapo (Gymnotiformes: Gymnotidae), LIRP 7767, 129.0 mm SL. a. dorsal; b. lateral and c. ventral views. Apt = Area postrema; Bol = bulbus olfactorius; Ch = chiasma opticum; Cocb = corpus cerebelli; Dien = diencephalon; Eg = eminentia granularis; ELL = electrosensory lateral line lobus; Hl = lateral nucleus of hypotalhamus; Hyp = hypophysis; LobX = lobus vagi; Mo = medulla oblongata; Ms = medulla spinalis; ndl = lateral portion of nucleus diffusus; nE = nucleus electrosensorius; Sv = saccus vasculosus; Tect = tectum opticum; Tv = tela ventriculi; Vcocb = valvula cerebellum. Cranial Nerves: nI = nervus olfactorius; nII = nervus opticus; nV = nervus trigeminus; nVI = nervus abducens; nVII = nervus fascialis; nVIII = nervus octavus; nlla = nervus lineae lateralis anterior; nllp = nervus lineae lateralis posterior; nIX = nervus glossopharyngeus; nX = nervus vagus.
Fig. 2 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 2. Brain of Brycon orbignyanus (Characiformes: Bryconidae), LIRP 6309, 175.5 mm SL. a. dorsal; b. lateral and c. ventral views. Apt = Area postrema; Bol = bulbus olfactorius; Ch = chiasma opticum; Cocb = corpus cerebelli; Dien = diencephalon; Eg = eminentia granularis; Hyp = hypophysis; Hyt = hypothalamus; Lih = lobus inferior hypothalami; LobX = lobus vagi; Mo = medulla oblongata; Ms = medulla spinalis; Pob = nervus tractus olfactorius; Sv = saccus vasculosus; Tect = tectum opticum;; Telen = Telencephalon Tl = Torus lateralis; Tv = tela ventriculi; Cranial Nerves: nI = nervus olfactorius; nII = nervus opticus; nIII = nervus oculomotorius; nIV = nervus trochlearis; nV = nervus trigeminus; nVI = nervus abducens; nVII = nervus fascialis; nVIII = nervus octavus; nLLa = nervus lineae lateralis anterior; nLLp = nervus lineae lateralis posterior; nIX = nervus glossopharyngeus; nX = nervus vagus and; nSo = nervus spino-occipitales.
Fig. 1 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 1. Brain of Brycon orbignyanus (Characiformes: Bryconidae), LIRP 6309, 175.5 mm SL. Main encephalic divisons (Telencephalon, Diencephalon, Mesencephalon, Rhombencephalon + Medulla oblongata and Medulla spinalis) in different colors. a. dorsal; b. lateral and c. ventral views.
Fig. 3 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 3. Brain of Cyprinus carpio (Cypriniformes: Cyprinidae), LIRP 8923, 72.3 mm SL. a. dorsal; b. lateral and c. ventral views. Apt = Area postrema; Bol = bulbus olfactorius; Ch = chiasma opticum; Cocb = corpus cerebelli; Dien = diencephalon; Eg = eminentia granularis; Hyp = hypophysis; Hyt = hypothalamus; Lih = lobus inferior hypothalami; LobVII = lobus facialis; LobX = lobus vagi; Mo = medulla oblongata; Ms = medulla spinalis; Pob = nervus tractus olfactorius; Tect = tectum opticum; Telen = Telencephalon; Tl = Torus lateralis; Tv = tela ventriculi. Cranial Nerves: nI = nervus olfactorius; nII = nervus opticus; nIII = nervus oculomotorius; nIV = nervus trochlearis; nV = nervus trigeminus; nVI = nervus abducens; nVII = nervus fascialis; nVIII = nervus octavus; nlla = nervus lineae lateralis anterior; nllp = nervus lineae lateralis posterior; nIX = nervus glossopharyngeus; nX = nervus vagus and; nSo = nervus spino-occipitales.
Fig. 4 in The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations
Fig. 4. Brain of Diplomystes mesembrinus (Siluriformes: Diplomystidae), LBP 449, 72.62 mm SL. a. dorsal; b. lateral and c. ventral views. Apt = Area postrema; Bol = bulbus olfactorius; Ch = chiasma opticum; Cocb = corpus cerebelli; Dien = diencephalon; Eg = eminentia granularis; Hyp = hypophysis; Hyt = hypothalamus; Lih = lobus inferior hypothalami; LobVII = lobus facialis; LobX = lobus vagi; Mo = medulla oblongata; Ms = medulla spinalis; Pob = nervus tractus olfactorius; Tect = tectum opticum; Telen = Telencephalon; Tl = Torus lateralis; Tv = tela ventriculi. Cranial Nerves: nI = nervus olfactorius; nII = nervus opticus; nIII = nervus oculomotorius; nIV = nervus trochlearis; nV = nervus trigeminus; nVI = nervus abducens; nVII = nervus fascialis; nVIII = nervus octavus; nlla = nervus lineae lateralis anterior; nllp = nervus lineae lateralis posterior; nIX = nervus glossopharyngeus; nX = nervus vagus and; nSo = nervus spino-occipitales.
FIGURE 7 in Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection
FIGURE 7 | Correlation between total length and number of rays with hooks in males of Brycon orbignyanus. X axis: total length in cm. Y axis: number (n°) of anal fin rays that developed hooks.
FIGURE 4 in Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection
FIGURE 4 | Anal fin of Brycon orbignyanus with hooks. b: base of the hook. fr: first ray. lr: last ray. s: hooks. sg: rays segment. sr: second ray. st: hook cusp. Scales: A and B. 1.0 cm; C and D. 200 µm; E. 100 µm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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