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135 results for “Opossums”
FIGURE 1 in Taxonomic review of the slender mouse opossums of the "Parvidens" group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species
FIGURE 1. Scatter plot of the PCA based on 20 log-transformed (in base 10) craniodental measurements of adult female (left) and male (right) specimens of the parvidens and three pinheiroi morphogroups recognized in this report.
FIGURE 2 in Taxonomic review of the slender mouse opossums of the "Parvidens" group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species
FIGURE 2. Scatter plot of canonical scores for discriminant functions 1 and 2 based on 20 log-transformed (in base 10) craniodental measurements of adult female (left) and male (right) specimens of the parvidens and three pinheiroi morphogroups recognized in this report.
FIGURE 8 in Taxonomic review of the slender mouse opossums of the "Parvidens" group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species
FIGURE 8. Lingual view of left lower molars m1–m3 of Marmosops species. A, M. woodalli (UFMT 3719 ♁); B, M. parvidens (MPEG 40404 ♁). The arrow indicates a small accessory cusp between the metaconid and the entoconid. Abbreviations: mecd, metaconid; encd, entoconid. Scale bar 1 mm.
FIGURE 5 in Taxonomic review of the slender mouse opossums of the "Parvidens" group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species
FIGURE 5. Distribution (polygons) and collection localities (symbols) for Marmosops species of the "Parvidens" group in- cluded in this report: M. parvidens (yellow circles); M. pinheiroi (stricto sensu; green circles); M. woodalli (red circles); M. marina sp. nov. (blue circles); sympatry between M. parvidens and M. pinheiroi (s. s.; crosses); type localities (stars). The ranges of M. parvidens and M. pinheiroi were partially based on Voss et al. (2001; 2013) and Díaz-Nieto & Voss (2016). The range of M. woodalli was partially based on Nascimento et al. (2015).
FIGURE 4 in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 4. Eimeria caluromydis. Stieda body (black arrow), substieda body (red arrow) and sporocyst residuum (grey arrow). Scale bar 10µm
FIGURE 3. Eimeria auritanensis. A in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 3. Eimeria auritanensis. A—Polar granule (black arrow) and sporocyst residuum (yellow arrow); B—Stieda body (blue arrow). Scale bar 10µm
FIGURE 2. Eimeria philanderi. A in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 2. Eimeria philanderi. A—Stieda body (black arrow) and sporocyst residuum (blue arrow); B—Polar granule (red arrow). Scale bar 10µm
Data from: New DNA data from a Transthyretin nuclear intron suggest an Oligocene to Miocene diversification of living South America opossums (Marsupialia: Didelphidae).
Phylogenetic relationships of 19 species of didelphid marsupials were studied using two nuclear markers, the non-coding transthyretin intron 1 (TTR) and the coding interphotoreceptor retinoid binding protein exon 1 (IRBP), and two mitochondrial genes, the protein-coding cytochrome b (cyt-b) and the structural 12S ribosomal DNA (12S rDNA). Evolutionary dynamics of these four markers were compared to each other, revealing the appropriate properties presented by TTR intron 1 together with its well supported and resolved phylogenetic signal. Nuclear markers supported the monophyly of medium and large-sized opossums Metachirus+(Chironectes, Lutreolina, Didelphis, Philander), and the paraphyly of mouse-sized opossums, with the genera Gracilinanus, Thylamys, and Marmosops as a sister group to medium and large-sized didelphids. Conflicting branching patterns between mitochondrial and nuclear data involved the phylogenetic position of Marmosa-Micoureus-Monodelphis relative to other mouse-sized opossums. Nuclear phylogenetic inferences among genera were confirmed by the presence of synapomorphic indels observed in TTR intron 1. A Bayesian relaxed molecular clock dating of didelphid evolution using nuclear markers estimated their origin in the Middle Eocene (39.8 million years ago), with subsequent diversification during the Oligocene (Deseadan) and Miocene.
FIGURE 2 in Rediscovery and redescription of Marmosa (Stegomarmosa) andersoni Pine (Mammalia: Didelphimorphia: Didelphidae), an endemic Peruvian mouse opossum, with a reassessment of its affinities
FIGURE 2. Dorsal (above, left) and ventral (above, right) view of the skull and lower jaw (below) of MUSM 14154, a female specimen of M. andersoni reported in the text. Some of the distinctive traits of the species are shown, including the development of the postorbital processes and the first lower premolar's filling in the space between the lower canine and the second lower premolar. Scale bars = 5 mm.
FIGURE 1 in Rediscovery and redescription of Marmosa (Stegomarmosa) andersoni Pine (Mammalia: Didelphimorphia: Didelphidae), an endemic Peruvian mouse opossum, with a reassessment of its affinities
FIGURE 1. Map of southeastern Peru, showing the type locality of Marmosa (Stegomarmosa) andersoni (Hacienda Villa Carmen = black triangle), and the two new localities in the Lower Urubamba Region (black dots: 1 = San Martín 3, and 2 = Cashiriari 3 well-sites). Two major rivers near the collecting localities are named. Inset: Outline map of Peru, indicating the boundaries of the area shown in color.
FIGURE 3 in Rediscovery and redescription of Marmosa (Stegomarmosa) andersoni Pine (Mammalia: Didelphimorphia: Didelphidae), an endemic Peruvian mouse opossum, with a reassessment of its affinities
FIGURE 3. Majority-rule consensus of> 56,000 equally most-parsimonious trees obtained through a heuristic parsimony analysis of nonmolecular characters described by Jansa and Voss (2005), updated by inclusion of M. andersoni. The "caluromyine" outgroups (Glironia venusta, Caluromysiops irrupta, Caluromys lanatus, and C. philander) are not shown. Statistical support values, above branches, based on 200 bootstrap replicates and indicated only for those above 50%.
FIGURE 3. A in Phylogenetic evaluation of taxonomic definition of didelphid mouse opossum of the genus Thylamys from valleys of Coquimbo region, Chile
FIGURE 3. A Specimen of T. e. elegans from Las Docas (UCK22) type locality. B Specimen of T. e. coquimbensis from Paiguano (UCK23) type locality. Fur color of Paiguano mouse opossum is clearer than the T. e. elegans specimen from Las Docas. Eye-rings are conspicuous in T. e. elegans. In T. e. coquimbensis, eye-rings are absent or more narrow than in T. e. elegans, and the ears appear slightly larger and more approximated.
FIGURE 2 in Phylogenetic evaluation of taxonomic definition of didelphid mouse opossum of the genus Thylamys from valleys of Coquimbo region, Chile
FIGURE 2. Dorsal view of the naso-frontal region of Chilean Thylamys used in this study (max: maxillary; nas: nasal; fr: frontal). A T. elegans elegans, UCK22, Las Docas, Valparaíso (Terra Tipica). B T. elegans coquimbensis, NK96879, Fray Jorge National Park. C T. e. coquimbensis, UCK23 Paiguano (Terra Tipica). D Thylamys pallidior, EP476, La Huaica. E T. pallidior, NK96045, Colchane. F T. pallidior, EP440, Quebrada de Camarones.
FIGURE 1 in Phylogenetic evaluation of taxonomic definition of didelphid mouse opossum of the genus Thylamys from valleys of Coquimbo region, Chile
FIGURE 1. Relationships and distribution of Chilean Thylamys. (A) Phylogenetic relationships by means of the ML tree with bootstrap and posterior probability values for parsimony, likelihood and Bayesian Inference based on the mitochondrial gene cyt b. Three subspecies are recovered in T. elegans: T. e. coquimbensis (green), T. e. elegans (purple) and the Loa lineage (light green). "T. pallidior A" (blue) and "T. pallidior B" (red) are in sister relationship with T. elegans. The numbers on the nodes are the bootstrap values of MP and ML and posterior probabilities of the BI. Number in parentheses at tip label of phylogeny correspond to locality number at the map. (B) Map of 43 collecting localities for specimens of Thylamys sequenced for this study or downloaded from GenBank (Table 1). Dots colors on the map represent each of the major clades recovered in the phylogeny. An asterisk (*) at tip labels (tree) and locality numbers (map) correspond to type localities.
Sperm competition drives variation in testis size within and between breeding seasons in the gracile mouse opossum
<p>Data set on <i>Gracilinanus agilis</i> (Didelphimorphia: Didelphidae) with a reproducible script.</p><p> </p>
On following pages: 5. Sangay Shrew-opossum (Caenolestes sangay); 6. Incan Shrew-opossum (Lestoros inca); 7. Long-nosed Shrew-opossum (Rhyncholestes raphanurus). in Caenolestidae
On following pages: 5. Sangay Shrew-opossum (Caenolestes sangay); 6. Incan Shrew-opossum (Lestoros inca); 7. Long-nosed Shrew-opossum (Rhyncholestes raphanurus).
On following pages: 50. Big Lutrine Opossum (Lutreolina crassicaudata); 51. Massoia's Lutrine Opossum (Lutreolina massoia); 52. Virginia Opossum (Didelphis virginiana), 53. Brazilian White-eared Opossum (Didelphis albiventris); 54. Guianan White-eared Opossum (Didelphis imperfecta); 55. Andean White-eared Opossum (Didelphis pernigra); 56. Southern Black-eared Opossum (Didelphis aurita); 57. Northern Black-eared Opossum (Didelphis marsupialis). in Didelphidae
On following pages: 50. Big Lutrine Opossum (Lutreolina crassicaudata); 51. Massoia's Lutrine Opossum (Lutreolina massoia); 52. Virginia Opossum (Didelphis virginiana), 53. Brazilian White-eared Opossum (Didelphis albiventris); 54. Guianan White-eared Opossum (Didelphis imperfecta); 55. Andean White-eared Opossum (Didelphis pernigra); 56. Southern Black-eared Opossum (Didelphis aurita); 57. Northern Black-eared Opossum (Didelphis marsupialis).
On following pages: 78. Dwarf Fat-tailed Opossum (Thylamys velutinus); 79. Elegant Fat-tailed Opossum (Thylamys Mesopotamian Fat-tailed Opossum (Thylamys citellus); 83. Dry Chaco Fat-tailed Opossum (Thylamys pulchellus); 86. Argentine Fat-tailed Opossum (Thylamys sponsorius); 87 Buff-bellied Fat-tailed Opossum (Thylamys venustus elegans); 80. Pallid Fat-tailed Opossum (Thylamys pallidior); 81. Tate's Fat-tailed Opossum (Thylamys tate); 82. 84. Chacoan Fat-tailed Opossum (Thylamys pusillus); 85. Paraguayan Fat-tailed Opossum (Thylamys macrurus),). in Didelphidae
On following pages: 78. Dwarf Fat-tailed Opossum (Thylamys velutinus); 79. Elegant Fat-tailed Opossum (Thylamys Mesopotamian Fat-tailed Opossum (Thylamys citellus); 83. Dry Chaco Fat-tailed Opossum (Thylamys pulchellus); 86. Argentine Fat-tailed Opossum (Thylamys sponsorius); 87 Buff-bellied Fat-tailed Opossum (Thylamys venustus elegans); 80. Pallid Fat-tailed Opossum (Thylamys pallidior); 81. Tate's Fat-tailed Opossum (Thylamys tate); 82. 84. Chacoan Fat-tailed Opossum (Thylamys pusillus); 85. Paraguayan Fat-tailed Opossum (Thylamys macrurus),).
On following pages: 68. Guaiba Mouse Opossum (Cryptonanus guahybae); 69. Unduavi Mouse Opossum (Cryptonanus unduaviensis); 70. Emilie's Opossum (Gracilinanus emiliae); 71. Aceramarca Opossum (Gracilinanus aceramarcae); 72. Agile Opossum (Gracilinanus agilis); 73. Wood Sprite Opossum (Gracilinanus dryas); 74. Northern Gracile Opossum (Gracilinanus marica); 75. Brazilian Gracile Opossum (Gracilinanus microtarsus). in Didelphidae
On following pages: 68. Guaiba Mouse Opossum (Cryptonanus guahybae); 69. Unduavi Mouse Opossum (Cryptonanus unduaviensis); 70. Emilie's Opossum (Gracilinanus emiliae); 71. Aceramarca Opossum (Gracilinanus aceramarcae); 72. Agile Opossum (Gracilinanus agilis); 73. Wood Sprite Opossum (Gracilinanus dryas); 74. Northern Gracile Opossum (Gracilinanus marica); 75. Brazilian Gracile Opossum (Gracilinanus microtarsus).
On following pages: 60. Orinoco Four-eyed Opossum (Philander deltae); 61. Mcllhenny's Foureyed Opossum (Philander mcilhennyi); 62. Mondolfi's Foureyed Opossum (Philander mondolfii); 63. Olrog's Four-eyed Opossum in Didelphidae
On following pages: 60. Orinoco Four-eyed Opossum (Philander deltae); 61. Mcllhenny's Foureyed Opossum (Philander mcilhennyi); 62. Mondolfi's Foureyed Opossum (Philander mondolfii); 63. Olrog's Four-eyed Opossum
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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.