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3,421 results for “Amazon”
Fig. 1 in Acanthoatractis xinguensis n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of yellow-spotted Amazon river turtle, Podocnemis unifilis Troschel (Testudines: Podocnemididae) in Brazilian Amazon
Fig. 1. Line drawings of Acanthoatractis xinguensis n. gen., n. sp. (Male) (A) Cephalic extremity, apical view. (B) Cephalic extremity, apical view, highlighting the oral opening surrounded by sclerotized pieces and the distribution of open end wrench-shaped sclerotized structures. (C) Anterior extremity of body, ventral view. (D) Whole body, lateral view. (E) Details of spicules. (F) Posterior extremity of body, ventral view.
Fig. 3 in Acanthoatractis xinguensis n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of yellow-spotted Amazon river turtle, Podocnemis unifilis Troschel (Testudines: Podocnemididae) in Brazilian Amazon
Fig. 3. Scanning electron micrographs of Acanthoatractis xinguensis n. gen., n. sp. (A) Male, cephalic extremity, subapical view. (B) Anterior extremity of body, ventrolateral view. Inset: Detail of deirid, lateral view (Scale-bar: 10 μm); Detail of excretory pore, ventral view (Scale-bar: 10 μm). (C) Posterior extremity of male, ventrolateral, distribution of caudal papillae (arrowheads). Detail of phasmid, ventrolateral view (Scale-bar: 5 μm); Postcloacal papillae, ventrolateral view (Scalebar: 10 μm). (D) Posterior extremity of female, ventrolateral view, lines indicate vulva and anus. Abbreviations: Amphid, Am; anus, An; deirid, De; excretory pore, Ep; single median papilla, Sm; vulva, Vu.
Fig. 1 in A new species of Orientatractis (Nematoda: Cosmocercoidea: Atractidae) parasite of Yellow-Spotted Amazon River Turtle, Podocnemis unifilis Troschel, 1848 (Testudines: Podocnemididae) in Brazilian Amazon
Fig. 1. Line drawings of Orientatractis matosi n. sp. (A) Female, whole body, ventral view. (B) Female, cephalic extremity, apical view (C) Posterior end of female, lateral view. (D) Male, whole body, lateral view. (E) Anterior extremity of body, ventrolateral view. (F) Details of spicules and gubernaculum. (G) Male, posterior end, ventral view.
Fig. 2 in A new species of Orientatractis (Nematoda: Cosmocercoidea: Atractidae) parasite of Yellow-Spotted Amazon River Turtle, Podocnemis unifilis Troschel, 1848 (Testudines: Podocnemididae) in Brazilian Amazon
Fig. 2. Scanning electron micrographs of Orientatractis matosi n. sp. (A) Cephalic extremity, apical view (amphidial pores, arrowheads). (B) Anterior extremity of body, lateral view, lines indicate deirid and excretory pore. (C) Posterior extremity of female, ventrolateral view, lines indicate vulva and anus. (D) Posterior extremity of male, ventrolateral, distribution of caudal papillae (arrows) and phasmids (arrowheads). Abbreviations: anus, An; deirid, De; excretory pore, Ep; vulva, Vu; single large submedian spine, a; submedian pointed spines, b. Inset: Cephalic end details, ventrolateral view (Scale-bar: 5 μm), Detail of excretory pore (Scale-bar: 5 μm).
Fig. 5 in Ophiotaenia karipuna n. sp. (Eucestoda: Proteocephalidae), a parasite of Erythrolamprus miliaris (Linnaeus, 1758), with redescription of Ophiotaenia arandasi (Santos and Rolas, 1973) from the Brazilian Amazon
Fig. 5. Scanning electron micrographs of Ophiotaenia karipuna n. sp. A, subapical view of the scolex (arrows indicate apical organ). B, scolex latero–ventral view. C, detail of the apex of scolex (arrows indicate apical organ). D, tegument surface on the upper edge of the sucker. E, tegument surface of luminal region of suckers. F, tegument surface between suckers and neck. Scale–bars: A, B, 100 μm; C, E, 5 μm; D, 10 μm; F, 30 μm.
Figura 1 in Ophiotaenia karipuna n. sp. (Eucestoda: Proteocephalidae), a parasite of Erythrolamprus miliaris (Linnaeus, 1758), with redescription of Ophiotaenia arandasi (Santos and Rolas, 1973) from the Brazilian Amazon
Figura 1. Line drawings of Ophiotaenia arandasi. A, scolex, frontal view. B, mature proglottid. C, gravid proglottid. D, terminal genitalia, ventro–dorsal. E, fully formed egg with fully developed embryonic hooks in the oncosphere. F–G, sections at the level of the cirrus–sac and the ovary, respectively. Scale–bars: A, C 200 μm; B 100 μm; D 100 μm; E 25 μm; F, G 100 μm.
Fig. 4 in Ophiotaenia karipuna n. sp. (Eucestoda: Proteocephalidae), a parasite of Erythrolamprus miliaris (Linnaeus, 1758), with redescription of Ophiotaenia arandasi (Santos and Rolas, 1973) from the Brazilian Amazon
Fig. 4. Line drawings of Ophiotaenia karipuna n. sp. from Brazilian Amazon. A, section at the level of cirrus–sac. B, section at level of testes. C, section at level of ovary. D, terminal genitalia, ventro–dorsal. E, fully formed egg with fully developed embryonic hooks in the oncosphere. Scale–bars: A, B, C, D, 50 μm; E, 25 μm.
Fig. 3 in Ophiotaenia karipuna n. sp. (Eucestoda: Proteocephalidae), a parasite of Erythrolamprus miliaris (Linnaeus, 1758), with redescription of Ophiotaenia arandasi (Santos and Rolas, 1973) from the Brazilian Amazon
Fig. 3. Line drawings of Ophiotaenia karipuna n. sp. from Brazilian Amazon. A, scolex, frontal view. B, mature proglottid, ventral view. C, gravid proglottid, ventro–dorsal view. Scale–bars: A, B, C, 200 μm. Abbreviations: Apical organ, AO.
Figura 2 in Ophiotaenia karipuna n. sp. (Eucestoda: Proteocephalidae), a parasite of Erythrolamprus miliaris (Linnaeus, 1758), with redescription of Ophiotaenia arandasi (Santos and Rolas, 1973) from the Brazilian Amazon
Figura 2. Scanning electron micrographs of Ophiotaenia arandasi. A, dorso-ventral view of the scolex. B, sub-lateral view of the scolex. C, microtriches at the apex of the scolex. D, luminal surface of the sucker. E, upper surface of the neck. F, posterior surface of the neck. Scale–bars: A 100 μm; B 50 μm; C, E 5 μm; F 10 μm.
FIGURE 4 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 4 | Neighbor joining (NJ) tree of Hoplias inferred from partial COI (Cytochrome c Oxidase Subunit I gene) sequences using the Kimura 2-parameter model. The lateral bar indicates the partitions of species delimitation performed by the GMYC, ABGD and BIN analysis. The clade Hoplias misionera nested individuals from the La Plata and Amazon basins (blue tips).
FIGURE 7 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 7 | Updated distribution map of Hoplias misionera showing former known localities in Argentina and southern Brazil (Rosso et al., 2016) and the new records from Amazon basin (triangles). Star = type locality.
FIGURE 1 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 1 | Hoplias misionera, UFOPA AMTRA131-19, 237 mm SL, Amazonas River, Alenquer, Pará, Brazil. Lateral view. Scale bar = 1 cm. Photo by L.R.R. Rodrigues.
FIGURE 2 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 2 | Configuration of the medial margins of the dentary in Hoplias misionera. A. Y-shaped, UFOPA AMTRA126-19, 214 mm SL. B. V-shaped, UFOPA AMTRA127-19, 232 mm SL. Scale bars = 1 cm. Photos by L. R. R. Rodrigues. Illustration by T. M. A. Lima.
FIGURE 6 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 6 | Partial idiogram of the four largest chromosome pairs of Hoplias malabaricus (karyomorphs C and F) and H. misionera showing marked size reduction from the first to second metacentric pair only in the karyomorph F.
FIGURE 3 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 3 | Last vertical series of scales on the base of the caudal-fin rays. Comparison between Hoplias misionera (A), UFOPA AMTRA131-19, 237 mm SL and Hoplias cf. malabaricus (B), UFOPA AMTRA110, 201 mm SL. Scale bars = 1 cm. Photos by L. R. R. Rodrigues. Illustration by T. M. A. Lima.
FIGURE 5 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations
FIGURE 5 | Karyotype of Hoplias misionera from Amazon basin (2n=40 chromosomes). Conventional Giemsa stained (A), C-banded (B) and mapping of 18S rDNA FISH probes (green signals) (C). The Ag-NOR bearing chromosomes are showed in the box.
FIGURE 3 in Diversity of Loricariidae (Actinopterygii: Siluriformes) assemblages in two Conservation Areas of the Middle Xingu River, Brazilian Amazon, and their suitability for sustainable ornamental fisheries
FIGURE 3 | Principal component analysis (PCA) for composition of ornamental fish species based on the method of capture (Hellinger transformation), considering the two extractive reserves.
FIGURE 4 in Diversity of Loricariidae (Actinopterygii: Siluriformes) assemblages in two Conservation Areas of the Middle Xingu River, Brazilian Amazon, and their suitability for sustainable ornamental fisheries
FIGURE 4 | Principal Component Analysis (PCA) of fish composition in the drainages of both the Xingu and Iriri River RESEXes (Hellinger transformation). Only species names that made greatest contributions to compositional differences are shown.
FIGURE 2 in Diversity of Loricariidae (Actinopterygii: Siluriformes) assemblages in two Conservation Areas of the Middle Xingu River, Brazilian Amazon, and their suitability for sustainable ornamental fisheries
FIGURE 2 | Venn diagram showing the compositions of the Loricariidae species found in both extractive reserves.
FIGURE 5 in Reproductive biology of seven fish species of commercial interest at the Ramsar site in the Baixada Maranhense, Legal Amazon, Brazil
FIGURE 5 | Relative frequency of gonadal maturation stages during the rainy and dry seasons. (A) Cichla monoculus; (B) Hassar affinis; (C) Hoplias malabaricus; (D) Plagioscion squamosissimus; (E) Prochilodus lacustris; (F) Pygocentrus nattereri; and G. Schizodon dissimilis, caught in Baixada Maranhense Protection Area, between January 2012 and December 2016. Immature (IP); Developing phase (DP); Spawning capable (SP); Regression (RP); Regeneration (RGP), F (Female) and M (Males).
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.