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288 results for “Sigmodontinae”
FIGURE 3 in New record of Rhagomys rufescens (Thomas 1886) (Rodentia: Muridae Sigmodontinae) in the Atlantic forest of southeastern Brazil
FIGURE 3. Dorsal (a), ventral (b) and lateral (c) views of the skull and (d) mandible of the specimen (MN 65545) of R. rufescens collected in the present study.
FIGURE 2 in New record of Rhagomys rufescens (Thomas 1886) (Rodentia: Muridae Sigmodontinae) in the Atlantic forest of southeastern Brazil
FIGURE 2. Lateral (a), ventral (b) and dorsal (c) views of the specimen (MN 65545) of R. rufescens collected in the present study.
FIGURE 4 in New record of Rhagomys rufescens (Thomas 1886) (Rodentia: Muridae Sigmodontinae) in the Atlantic forest of southeastern Brazil
FIGURE 4. Lateral (a), upper (b), and lower (c) toothrows of the here analyzed specimen (MN 65545) of R. rufescens.
FIGURE 1 in New record of Rhagomys rufescens (Thomas 1886) (Rodentia: Muridae Sigmodontinae) in the Atlantic forest of southeastern Brazil
FIGURE 1. Collecting localities of R. rufescens in Atlantic forest of southeastern Brazil: 1—Picinguaba, Ubatuba (SP) in "floresta ombrófila densa" (light gray) and 2—Mata do Paraíso, Viçosa (MG) in "floresta estacional semidecidual" (dark gray).
FIGURE 1. Maximum parsimony tree constructed under a 7 in Taxonomic status of Brucepattersonius albinasus (Rodentia: Sigmodontinae)
FIGURE 1. Maximum parsimony tree constructed under a 7:1 ts:tv ratio scheme, with six haplotypes of B. griserufescens, the holotype of B. albinasus and two haplotypes from GenBank: B. iheringi and B. soricinus. Tree length = 555, CI = 0.9225, RI = 0.8673, RC = 0.8001. Numbers above the branches are bootstrap values (1000 / 500 replicates from MP / ML analyses).
FIGURE 4 in New data on the distribution, natural history and morphology of Kunsia tomentosus (Lichtenstein, 1830) (Rodentia: Cricetidae: Sigmodontinae)
FIGURE 4. Scatter plot of the scores for the first two principal component functions extracted from the covariance matrix of log-transformed craniodental measurements of Kunsia tomentosus samples.
FIGURE 2 in New data on the distribution, natural history and morphology of Kunsia tomentosus (Lichtenstein, 1830) (Rodentia: Cricetidae: Sigmodontinae)
FIGURE 2. Ventral view of stomach of Kunsia tomentosus (MN 62570) in frontal section shows the glandular epithelium distribution confined in the diverticulum (after Carleton, 1973).
FIGURE 1 in New data on the distribution, natural history and morphology of Kunsia tomentosus (Lichtenstein, 1830) (Rodentia: Cricetidae: Sigmodontinae)
FIGURE 1. Distribution of Kunsia tomentosus:?. Type locality region, between Rio Grande do Sul and Santa Catarina states, Brazil; 1. Escola Agrotécnica de Humaitá, Humaitá, Amazonas, Brazil; 2. Isla Redonda de Caravana, Beni, Bolívia; 3. San Joaquín, Beni, Bolivia; 4. Monte de río Machupo, San Joaquín, Beni, Bolivia; 5. Parque Nacional Noel Kempff Mercado, Los Fierros, Santa Cruz, Bolivia; 6. Margabalito, Santa Cruz, Bolívia; 7. Parque Nacional Noel Kempff Mercado, Velasco, Santa Cruz, Boliva; 8. 45 km E of Aserradero Moira, Santa Cruz, Bolívia; 9. Fazenda Planalto, Vilhena, Rondônia, Brazil; 10. Último Acampamento, Chapada dos Parecis, Mato Grosso, Brazil; 11. Campos Novos, Serra do Norte, Chapada dos Parecis, Mato Grosso, Brazil; 12. Campos do Riacho Lambary, Serra do Norte, Chapada dos Parecis, Mato Grosso, Brazil; 13. Estação Ecológica Serra das Araras, Porto Estrela, Mato Grosso, Brazil; 14. Expedition Base Camp, 260 km N of Xavantina, Serra do Roncador, Mato Grasso, Brazil; 15. Parque Nacional das Emas, Mineiros, Goiás Brazil; 16. Lagoa Santa, near to Rio das Velhas, Minas Gerais, Brazil.
FIGURE 5 in New data on the distribution, natural history and morphology of Kunsia tomentosus (Lichtenstein, 1830) (Rodentia: Cricetidae: Sigmodontinae)
FIGURE 5. Shape of the posterior border of the palate (as indicated by arrows) of Kunsia tomentosus: a) LHE 1619 (Margabalito, Santa Cruz, Bolivia); b) MPGE 34024 (Humait, Amazonas, Brazil); c) MPEG 31189 (Vilhena, Rondnia, Brazil); d) MN 2054 (lectotype of S. gnambiquarae, Mato Grosso, Brazil); e) MN 62567 (PNE, Gois, Brazil).
FIGURE 1 in New records of Rhagomys rufescens (Rodentia: Sigmodontinae) in the Atlantic forest of Brazil
FIGURE 1. Collecting localities of Rhagomys rufescens. The details of localities are specified in Table 1. In light green lowland forests, in dark green montane forests with altitude range of 500–1000m, and in brown montane forests with altitudes superior to 1000 m. Vegetation map at 1 km resolution from Eva et al. (2002).
FIGURE 2 in Akodon cursor Winge, 1887 (Rodentia: Sigmodontinae): one or two species? New evidences based on molecular data
FIGURE 2. Phylogenetic relationships observed among specimens of Akodon (2n=14, 15 and 16) and outgroups included in the analyses. Consensus tree of 164 most parsimonious trees, with a score of 104 steps. Fifteen variable characters are parsimony uninformative, and 52 variable characters are parsimony informative. Numbers above branches represent bootstrap support, whereas numbers below branches represent the number of steps necessary to collapse a node (decay index). Akodon serrensis and Thaptomys nigrita were used as outgroup. Uppercase letters are abbreviation for states in Brazil: BA=Bahia, ES= Espírito Santo, PR = Paraná, PE=Pernambuco, RS = Rio Grande do Sul, and SP= São Paulo. Haplotype numbering followed Table 1.
FIGURE 1 in Akodon cursor Winge, 1887 (Rodentia: Sigmodontinae): one or two species? New evidences based on molecular data
FIGURE 1. Localities of Akodon (2n=14, 15 and 16) used in PCR-RFLP studies. See Appendix for details of sample localities.
FIGURE 3 in Akodon cursor Winge, 1887 (Rodentia: Sigmodontinae): one or two species? New evidences based on molecular data
FIGURE 3. Median-joining network depicting the phylogenetic relationships among, and geographical assignment of all Akodon cursor mtDNA haplotypes based on cytochrome b PCR-RFLP: yellow São Paulo; red, Espírito Santo; blue, Pernambuco and green Bahia. The size of each circle is proportional to relative abundance of each haplotype and branch length is proportional to number of substitutions. Haplotype numbering followed Table 1.
FIGURE 1 in On the composite nature of the holotype of Loxodontomys pikumche Spotorno et al., 1998 (Rodentia, Cricetidae, Sigmodontinae)
FIGURE 1. Dorsal (above), ventral (middle), and lateral (below) views of the skin of the holotype of Loxodontomys pikumche Spotorno et al., 1998.
FIGURE 2 in On the composite nature of the holotype of Loxodontomys pikumche Spotorno et al., 1998 (Rodentia, Cricetidae, Sigmodontinae)
FIGURE 2. Ventral (left), lateral (middle, above), ventrolateral (middle, below) and dorsal (right) views of the skull and labial view (middle, center) of the left dentary (reversed) of specimen LCM 1759, referred as the holotype of Loxodontomys pikumche by Spotorno et al. (1998: figure 5). Arrows indicate some morphological differences between Phyllotis and Loxodontomys (cf. Braun, 1993; Steppan, 1995; Teta et al., 2009): a—parallel molar toothrow (posteriorly divergent in Loxodontomys); b—well inflated auditory bullae (slightly inflated); c—mandibular condyle obliquely oriented (more transversely oriented); d—hypsodont molars (hypsodonty much less marked); e—M2 larger than M3 (M2 subequal to M3); f—anterior portion of nasal bones slightly expanded in the anterior third (well expanded).
FIGURE 3. a in On the composite nature of the holotype of Loxodontomys pikumche Spotorno et al., 1998 (Rodentia, Cricetidae, Sigmodontinae)
FIGURE 3. a) LCM 1759, skull of the holotype of Loxodontomys pikumche (referred in this work as a specimen of Phyllotis xanthopygus); b) LCM 1755 (or 1759?), Loxodontomys pikumche; c) LCM 1755, a second Loxodontomys individual referred to the same number that the previous one.
FIGURE 1 in Rodents of the subfamily Sigmodontinae (Myomorpha: Cricetidae) as hosts for South American hard ticks (Acari: Ixodidae) with hypotheses on life history
FIGURE 1. Neighbour-joining condensed tree using the Tamura-Nei model for 16S rDNA mitochondrial sequences of all Neotropical (exclusive and non-exclusive) species of Ixodes deposited in GenBank and for Nearctic species usually found on Cricetidae, with species of Argasidae (Ornithodoros moubata and Otobius megnini) as outgroups. Numbers on the branches represent bootstrap support (more than 70 %) generated from 1,000 replications. Codes following each species name correspond to GenBank accession numbers. Names in bold indicate ticks often found on Cricetidae different to Sigmodontinae in the Nearctics and Neotropics. Names underlined indicate ticks often found on Sigmodontinae.
FIGURE 2 in Taxonomic status of Akodon oenos (Rodentia, Sigmodontinae), an obscure species from West Central Argentina
FIGURE 2. Skulls in dorsal (top) and ventral (bottom) views of age class 5 specimens of Akodon oenos and A. spegazzinii: a. CNP 1897 (A. oenos; Llancanelo Natural Reserve, Mendoza); b. CNP 2352 (A. oenos, topotype; La Pega, Mendoza); c. CNP 1493 (A. spegazzinii; Las Chacritas, Catamarca). Scale = 10 mm.
FIGURE 1 in Taxonomic status of Akodon oenos (Rodentia, Sigmodontinae), an obscure species from West Central Argentina
FIGURE 1. Specimen scores of adult individuals of Akodon (age class 3; n = 74) for principal components 1 and 2 (top) and 1 and 3 (bottom) extracted from the variance-covariance matrix of 12 craniodental distances (see text and Table 1). Symbols are: open circle = A. boliviensis; black triangles = A. caenosus; open squares = A. oenos; black squares = A. spegazzinii; black circles = A. sylvanus.
FIGURE 7. A in Taxonomic status of Akodon oenos (Rodentia, Sigmodontinae), an obscure species from West Central Argentina
FIGURE 7. A) Map depicting the Central West portion of Argentina, centred on Mendoza province, with recording localities for Akodon species (compiled from several sources). Numbered localities are: 1. Villavicencio, 2 km S Ruta 32 (32º 31' S, 68º 59' W); 2. La Pega (32º 48' S, 62º 48' W); 3. Puesto de Lima (32º 54' S, 69º 01' W), and 4. Llancanelo Natural Reserve (35º 38' S, 69º 11' W). Star (type locality) and black dots are for A. oenos, yellow dots for A. molinae, and red dots for A. iniscatus. B) Map depicting the Northwestern portion of Argentina, with recording localities for Akodon spegazzinii (taken from Jayat et al., 2010).
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