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	Provedor de dados Mastozool. neotrop. (11) Zoologia (6) Biota Neotropica (5) Genet. Mol. Biol. (5) Rev. Bras. Zool. (3) Naturalis (3) Acta Amazonica (3) Iheringia, Sér. Zool. (3) Infoteca-e (1) Anais da ABC (AABC) (1) Arq. Bras. Med. Vet. Zootec. (1) BABT (1) International Journal of Morphology (1) Pap. Avulsos de Zool. (São Paulo) (1) RChHN (1) Rev. Soc. Entomol. Argent. (1) Mais... Autor Fagundes,Valéria (3) Castro,Dolores del Carmen (2) Freudenthal, M. (2) Martín-Suárez, E. (2) Nava,Santiago (2) Pardiñas,Ulyses F. J. (2) Teta,Pablo (2) Yonenaga-Yassuda,Yatiyo (2) ABEL,Isis (1) ABREU,MAURY S.L. (1) ARAÚJO SARAIVA,Elane de (1) ARDENTE,Natália Carneiro (1) Adega,Filomena (1) Aguieiras,Marcia (1) Almeida,A.B. (1) Althoff,Sérgio Luiz (1) Amaro-Ghilard,Renata Cecília (1) Amorim,M. (1) Asfora,Paulo H (1) Assis-Neto,Antônio Chaves (1) Mais... 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Última Description of the karyotype of Rhagomys rufescens Thomas, 1886 (Rodentia, Sigmodontinae) from Southern Brazil Atlantic forest Genet. Mol. Biol. Testoni,André Filipe; Althoff,Sérgio Luiz; Nascimento,André Paulo; Steiner-Souza,Francisco; Sbalqueiro,Ives José. Rhagomys rufescens (Rodentia: Sigmodontinae) is an endemic species of the Atlantic forest from Southern and Southeastern Brazil. Some authors consider Rhagomys as part of the tribe Thomasomyini; but its phylogenetic relationships remain unclear. Chromosomal studies on eight specimens of Rhagomys rufescens revealed a diploid number of 2n = 36 and a number of autosome arms FN = 50. GTG, CBG and Ag-NOR banding and CMA3/DAPI staining were performed on metaphase chromosomes. Eight biarmed and nine acrocentric pairs were found in the karyotype of this species. The X and Y chromosomes were both acrocentric. Most of the autosomes and the sex chromosomes showed positive C-bands in the pericentromeric region. The X chromosome showed an additional heterochromatic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhagomys rufescens; Thomasomyini; Rodentia; Atlantic forest; Karyotype. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300017 Testing the Rio Doce as a riverine barrier in shaping the Atlantic rainforest population divergence in the rodent Akodon cursor Genet. Mol. Biol. Colombi,Victor Hugo; Lopes,Silvia Ramira; Fagundes,Valéria. Akodon cursor occurs in dense rainforest from northern (8º S) to southern (26º S) states along the Atlantic coast of Brazil. Previous karyological and molecular data revealed two major clades, one including northern (8-15º S) and the other southern (19-26º S) populations. The center of geographic distribution (15-20º S), which included the state of Espírito Santo, was identified as a potential vicariance region. Since river barriers are among the most discussed models in the study of Neotropical diversification, we examined whether the Rio Doce (19º S) plays an important role in shaping the population genetic divergence of A. cursor by including samples from Espírito Santo in the analysis. Our results showed that the northern-southern division region in... Tipo: Info:eu-repo/semantics/other Palavras-chave: Akodontini; Atlantic Forest; Cytochrome b; Gene flow; Phylogeography; Rodentia. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400029 Hidden heterochromatin: characterization in the Rodentia species Cricetus cricetus, Peromyscus eremicus (Cricetidae) and Praomys tullbergi (Muridae) Genet. Mol. Biol. Paço,Ana; Adega,Filomena; Guedes-Pinto,Henrique; Chaves,Raquel. The use of in situ restriction endonuclease (RE) (which cleaves DNA at specific sequences) digestion has proven to be a useful technique in improving the dissection of constitutive heterochromatin (CH), and in the understanding of the CH evolution in different genomes. In the present work we describe in detail the CH of the three Rodentia species, Cricetus cricetus, Peromyscus eremicus (family Cricetidae) and Praomys tullbergi (family Muridae) using a panel of seven REs followed by C-banding. Comparison of the amount, distribution and molecular nature of C-positive heterochromatin revealed molecular heterogeneity in the heterochromatin of the three species. The large number of subclasses of CH identified in Praomys tullbergi chromosomes indicated that the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Constitutive heterochromatin; In situ restriction endonuclease digestion; Rodentia. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100009 Multiple interstitial ribosomal sites (NORs) in the Brazilian squirrel Sciurus aestuans ingrami (Rodentia, Sciuridae) with 2n = 40: an overview of Sciurus cytogenetics Genet. Mol. Biol. Fagundes,Valéria; Christoff,Alexandre Uarth; Amaro-Ghilard,Renata Cecília; Scheibler,Daniel R.; Yonenaga-Yassuda,Yatiyo. This is the first time the karyotype of the Brazilian squirrel Sciurusaestuans ingrami, with 2n = 40, is described. The karyotype of this species comprises 18 pairs of biarmed and one minute pair of acrocentric autosomes, a medium-sized submetacentric X and a medium-sized acrocentric Y. Four pairs have an interstitial secondary constriction, co-located with nucleolar organizer regions (NORs), identified by silver-staining technique and fluorescent in situ hybridization (FISH) with ribosomal 18S/28S probes. The occurrence of multiple interstitial NORs is rare in rodents, and this is one of the few examples, identified by a molecular cytogenetics approach. Tipo: Info:eu-repo/semantics/article Palavras-chave: Squirrels; Chromosomes; Karyotype; NORs; Rodentia. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000300007 Karyological geographic variation of Oligoryzomys nigripes Olfers, 1818 (Rodentia, Cricetidae) from Brazil Genet. Mol. Biol. Paresque,Roberta; Silva,Maria José de Jesus; Yonenaga-Yassuda,Yatiyo; Fagundes,Valéria. The karyotypes of 85 specimens of Oligoryzomys nigripes (Rodentia, Sigmodontinae) collected in the Cerrado and Atlantic Forest of seven states of Brazil were analyzed. Eighty four specimens presented a karyotype with 2n = 62 and one individual had 2n = 61 due to a monosomy of the X chromosome. High levels of intra- and inter-population karyotypic variability, due to sex chromosomes heteromorphisms and pericentric inversions in four autosomes (pairs 2, 3, 4 and 8), led to a variation of the autosomal arm numbers (fundamental number, FN) from 78 to 82. Synaptonemal complex analyses revealed normal meiosis in males heterozygous for pericentric inversions. We found 39 different cytotypes, 27 of which are herein described for the first time. A literature survey... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pericentric inversion; Oryzomyini; Oligoryzomys nigripes; Rodentia; Clinal variation. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100010 Una nueva especie de Hoplopleura (Phthiraptera, Anoplura) parásita de tres especies de Bibimys (Muridae, Sigmodontinae, Rodentia) Iheringia, Sér. Zool. Castro,Dolores del Carmen; Gonzalez,Alda. A new species Hoplopleura massoiai is described, based on specimens collected on three species of Bibimys Massoia, 1979: B. torresi Massoia, 1979, B. chacoensis (Shamel, 1931) and B. labiosus (Winge, 1887), from Chaco, Misiones and Buenos Aires provinces, Argentina. Male, female, first nymphal instar, external architecture of eggs and sites of oviposition are described, providing differences with its close relative Hoplopleura scapteromydis Ronderos, 1965; comments on distribution of the new species on its hosts are done. Tipo: Info:eu-repo/semantics/article Palavras-chave: Phthiraptera; Anoplura; Hoplopleura; Rodentia; Argentina. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000200009 Nymphal Stages of Abrocomophaga hellenthali (Phthiraptera, Gyropidae), a parasite of Octodon degus (Rodentia, Octodontidae) Iheringia, Sér. Zool. Cicchino,Armando C.; Castro,Dolores del Carmen. The three nymphal instars of Abrocomophaga hellenthali Price & Timm, 2000 are described and compared with both sexes of the adult stage. The most remarkable quali and quantitative body features of all instars are cathegorized and its progression along the development stated. Tipo: Info:eu-repo/semantics/article Palavras-chave: Abrocomophaga; Phthiraptera; Nymphal instars; Rodentia. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400003 Small mammal distributional patterns in Northwestern Argentina Iheringia, Sér. Zool. Sandoval,María L.; Escalante,Tania; Barquez,Rubén. ABSTRACT Quantitative evaluations of species distributional congruence allow evaluating previously proposed biogeographic regionalization and even identify undetected areas of endemism. The geographic scenery of Northwestern Argentina offers ideal conditions for the study of distributional patterns of species since the boundaries of a diverse group of biomes converge in a relatively small region, which also includes a diverse fauna of mammals. In this paper we applied a grid-based explicit method in order to recognize Patterns of Distributional Congruence (PDCs) and Areas of Endemism (AEs), and the species (native but non-endemic and endemic, respectively) that determine them. Also, we relate these distributional patterns to traditional biogeographic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Didelphimorphia; Distributional congruence; Geographical patterns; Rodentia. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000400505 Mamíferos encontrados ao Sul do Estado do Acre, Brasil. Infoteca-e DRUMOND, P. M.; SILVA, F. P. C. da; ROSAS, G. K. C.; GAIA, C.. Entre os anos de 2004 e 2008, sete inventários de mamíferos foram realizados em quatro áreas sob manejo florestal madeireiro e não madeireiro localizadas ao sul do Estado do Acre. A partir de transectos lineares instalados nas áreas, foi possível identificar 32 espécies pertencentes às ordens Artiodactyla, Perissodactyla, Carnivora, Primates, Rodentia e Xenarthra, que incluíram as espécies ameaçadas de extinção, de distribuição geográfica restrita ou pouco conhecidas. Entre os animais observados destaca-se a predominância dos primatas nas quatro áreas estudadas. Nesse caso, especula-se sobre a possibilidade desse grupo taxonômico ser utilizado como bioindicador da qualidade ambiental das áreas de manejo florestal no Estado do Acre. Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Western Amazon; Amazonia Occidental; Manejo florestal; RESEX Chico Mendes; Acre; Amazônia Ocidental; Relaciones entre el hombre y la vida salvaje; Mamíferos; Manejo de vida silvestre; Manejo forestal; Xenarthra.; Comunidades rurales; Administração florestal; Propriedade rural; Inventário.; Assentamento; Fauna silvestre; Mamífero; Rodentia; Forest management; Rural communities; Human-wildlife relations; Wildlife management; Mammals; Artiodactyla; Perissodactyla; Carnivora; Primates.. Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/951784 Staining Procedure of Cartilage and Skeleton in Adult Bats and Rodents International Journal of Morphology Cortés-Delgado,Natalia; Pérez-Torres,Jairo; Hoyos,Julio Mario. Transparency technique to demonstrate cartilage and skeleton has been used from years 70. This consists basically of the muscle digestion through an enzyme (trypsine), and the staining of cartilage and skeleton using alcian blue and alizarin red on specimens previously fixed to formalin. This technique can be used to study the state of the cartilage and the bones in different stages of the development and to observe abnormalitys. Also it can be used to demonstrate museum specimen skeleton preserved in liquid. In this article is showed the application of this technique for the first time in rodents and adult bats, besides some annotations to optimize the procedure. Tipo: Journal article Palavras-chave: Chiroptera; Rodentia; Cartilage; Bone; Morphology. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400032 Movements of Norway rats (Rattus norvegicus) in two poultry farms, Exaltación de la Cruz, Buenos Aires, Argentina Mastozool. neotrop. Gómez Villafañe,Isabel E.; Muschetto,Emiliano; Busch,María. The aim of this work was to study the range of movements of Norway rats in two poultry farms in Exaltación de la Cruz, Buenos Aires Province. Three female and three male rats were followed by radio-telemetry. The mean home range was 0.024 ha (0.0024 to 0.0525 ha) and the mean maximum distance between localization points was 33.70 m (10 m to 66 m). The maximum daily movement registered was 65 m. Individuals captured near sheds or pigpens did shorter displacements than those captured on the perimeter of each farm. Our results indicate that Norway rats moved only short distances in poultry farms. Tipo: Info:eu-repo/semantics/article Palavras-chave: Home range; Movements; Poultry farms; Radio-tracking; Rodentia. Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832008000200007 Variación morfológica cualitativa y cuantitativa en Abrothrix longipilis (Cricetidae, Sigmodontinae) Mastozool. neotrop. Teta,Pablo; Pardiñas,Ulyses F. J.. Se estudió la taxonomía alfa de Abrothrix longipilis (Waterhouse, 1837), uno de los abrotriquinos más ampliamente distribuidos y abundantes en las porciones australes de Argentina y Chile. Se realizó un análisis morfológico cualitativo (6 caracteres discretos) y cuantitativo (18 medidas cráneo-dentarias) de 477 especímenes adultos, agrupados primero según un criterio geográfico y luego según su pertenencia a los clados definidos por un estudio filogeográfico previo basado en 2 marcadores moleculares. Los análisis multivariados (análisis de componentes principales y análisis discriminantes “libres de tamaño”) indican que A. longipilis es un complejo que incluye por lo menos 2 especies, A. longipilis stricto sensu, aquí restringida al... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abrotrichini; Argentina; Chile; Cráneo; Morfometría; Muroidea; Rodentia; Taxonomía. Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000200009 La Jayupa de la altura (Cuniculus taczanowskii, Rodentia, Cuniculidae), un nuevo registro de mamífero para la fauna de Bolivia Mastozool. neotrop. Ríos-Uzeda,Boris; Wallace,Robert B.; Vargas,Julieta. En esta nota se reporta el primer registro de Cuniculus taczanowskii para la fauna de Bolivia, basado en un espécimen colectado en Octubre del año 2002. Para facilitar identificaciones, esta nota incluye comparaciones morfológicas entre esta especie y C. paca, una especie común en los bosques de las tierras bajas de Bolivia. Además, y en base a comunicaciones personales de otros investigadores presentamos una posible distribución de C taczanowskii.en el noroeste de Bolivia. Tipo: Info:eu-repo/semantics/article Palavras-chave: Cuniculus taczanowskii; Rodentia; Cuniculidae; Distribución; Bolivia. Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832004000100014 Primer registro de la rata cangrejera de Tweedy Ichthyomys Tweedii (Sigmodontinae: Ichthyomyini) en la provincia del Azuay, Ecuador Mastozool. neotrop. Santillán,Vinicio; Segovia,Edgar. Se presenta un nuevo registro de la rata cangrejera de Tweedy Ichthyomys tweedii para Ecuador en base a un ejemplar colectado en la provincia del Azuay, a unos 80 km de su localidad típica. Este registro extiende no solo la distribución sino también el rango altitudinal. Se describen las características del hábitat de la nueva localidad. Tipo: Info:eu-repo/semantics/report Palavras-chave: Ecuador; Rodentia; Sigmodontinae. Ano: 2013 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832013000200016 Terrestrial mammals of the Jequitinhonha River basin, Brazil: a transition area between Atlantic Forest and Cerrado Mastozool. neotrop. Geise,Lena; Pereira,Luciana G; Astúa,Diego; Aguieiras,Marcia; Lessa,Leonardo G; Asfora,Paulo H; Dourado,Francisco; Esberárd,Carlos E. L. Here we present an extensive survey for non-volant mammals along the margins of the Jequitinhonha River, which represents a contact area between the Cerrado and Atlantic Forest biomes. Our data were ob­tained after 13 trapping expeditions (from 2005 to 2012) on both banks of the river, from its source to its mouth, enriched by data obtained from a literature review and voucher specimens deposited in six mammal collections. All collected specimens were identified through their karyotypes and/or morphology. We obtained data for 75 localities (34 at the rigth margin, 42 at the left margin; 30 in the Cerrado and 45 in the Atlantic Forest). We obtained voucher records for 91 species, ca. 17% of all known Brazilian terrestrial non-volant mam­mals. Our results... Tipo: Info:eu-repo/semantics/article Palavras-chave: Barriers; Didelphimorphia; Karyotypes; Rodentia; Species richness. Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832017000100009 The role of Cerradomys Subflavus (Rodentia, Cricetidae) as seed predator and disperser of the palm Allagoptera arenaria Mastozool. neotrop. Grenha,Viviane; Macedo,Margarete V.; Pires,Alexandra S.; Monteiro,Ricardo F.. Small rodents are among the most abundant vertebrate seed predators in the tropics and palm fruits are a rich source of energy for them. Allagoptera arenaria is a nurse plant species at restinga vegetation in southeastern Brazil. Forty-five adult A. arenaria were marked to estimate fruit crop size and seed predation by rodents. Two trapping sessions were carried out to identify the rodent seed predators. In addition, a fruit removal experiment was conducted to investigate the role of rodents as seed dispersers. Of the 7409 seeds collected, 24% were damaged by rodents. Predation rates ranged from 0 to 64% per plant and the number and the proportion of damaged seeds increased significantly with crop size. In the removal experiments, 64% of the fruits were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Arecaceae; Rodentia; Seed dispersal; Seed predation; Arecaceae; Depredación de semillas; Dispersión de semillas; Rodentia. Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100007 Variación morfológica de Oligoryzomys longicaudatus magellanicus (rodentia: sigmodontinae) al oeste de los campos de hielo patagónico sur en Chile Mastozool. neotrop. Guzmán,Jonathan A; Ortiz,Juan Carlos; Cañón,Carola. Oligoryzomys es uno de los géneros de roedores más ampliamente distribuido en el territorio chileno. Se describe la variabilidad morfológica de individuos provenientes de localidades al oeste de Campos de Hielo Patagónico Sur entre los 48° S y 51° S. Análisis uni y multivariados realizados sobre la base de mediciones del cuerpo, mandíbula y cráneo no mostraron diferencias significativas por sexo, pero sí por procedencia geográfica. Los individuos insulares presentaron valores mayores para casi todos los caracteres evaluados, lo que podría corresponderse con la ausencia de predadores y competidores. Morfológica y distribucionalmente, los individuos analizados son asignados a la subespecie Oligoryzomys longicaudatus magellanicus del extremo sur del continente. Tipo: Info:eu-repo/semantics/article Palavras-chave: Islas; O. l. magellanicus; Patagonia Occidental; Rodentia; Variación morfológica. Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832015000200015 Nuevo registro de Ichthyomys pittieri (Rodentia: Cricetidae) para la Cordillera de la Costa Central, Venezuela, con notas sobre su historia natural y distribución Mastozool. neotrop. García,Franger J; Machado,Marjorie; Delgado-Jaramillo,Mariana Isabel; Aular,Luis; Mújica,Yoiber. Ichthyomys pittieri (Rodentia: Cricetidae), descrito en la década de 1960 para la Cordillera de la Costa Central de Venezuela, es un roedor sigmodontino endémico de este país, conocido por pocos ejemplares en colecciones y sin reportes desde hace al menos 13 años. En este artículo se documenta un nuevo registro en el Parque Nacional Yurubí, estado Yaracuy, confirmando su presencia en el área. Se adiciona información de historia natural para este roedor, incluyendo parámetros físicos, químicos y ambientales del riachuelo donde fue capturado, en un bosque submontano a 800 m. Por último, se reportan algunas medidas externas y cráneo-dentarias y se actualiza la distribución conocida. Tipo: Info:eu-repo/semantics/report Palavras-chave: Ichthyomys pittieri; Parque Nacional Yurubí; Rodentia; Sierra de Aroa; Yaracuy. Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000200010 New host records and geographic distribution of species of Trichuris (Nematoda: Trichuriidae) in rodents from Argentina with an updated summary of records from America Mastozool. neotrop. Robles,María del Rosario; Navone,Graciela T. Species of Trichuris have a cosmopolitan distribution and parasitize a broad range of mammalian hosts. Although, the prevalence and intensity of this genus depends on many factors, the life cycles and characteristics of the environment have been the main aspect used to explain their geographical distribution. In this paper, we provide new host and geographical records for the species of Trichuris from Sigmodontinae rodents in Argentina. Moreover, we present comprehensive data about previous records of the genus from rodents in North and South America, and mainly in Argentina. A total of 563 specimens including in 25 species of rodents from 12 provinces and 43 localities from Northeast and Southern Argentina were sampled for Trichuris. Six species of... Tipo: Info:eu-repo/semantics/article Palavras-chave: America; Argentina; Nematoda; Rodentia; Sigmodontinae; Trichuris. Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000100008 Graomys hypogaeus Cabrera, 1934 es un sinónimo de Eligmodontia moreni (Thomas, 1896) Mastozool. neotrop. Teta,Pablo; D'Elía,Guillermo; Pardiñas,Ulyses F. J.. Se estudió el holotipo de Graomys hypogaeus Cabrera, 1934, una especie correspondiente al género Eligmodontia de acuerdo a autores previos. Sobre la base de caracteres morfológicos y métricos se concluye que G. hypogaeus debe ser considerado un sinónimo junior de Eligmodontia moreni (Thomas, 1896), una especie ampliamente distribuida en el centro-oeste de Argentina. Tipo: Info:eu-repo/semantics/article Palavras-chave: Argentina; Catamarca; Cricetidae; Phyllotini; Rodentia. Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100026 Registros recuperados: 47 Primeira ... 1 2 3 ... Última

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