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Registros recuperados: 19
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Estimating body mass of fossil rodents Naturalis
Freudenthal, M.; Martín-Suárez, E..
Reconstructing the body mass of a fossil animal is an essential step toward understanding its palaeoecological role. Length × width (L×W) of the first lower molar (m1) is frequently used as a proxy for body mass in fossil mammals. However, among rodents, Muroidea have no premolar and an elongated m1, whereas other groups have a premolar and a m1 that is not elongated. This leads to an overestimation of body mass in muroids and/or an underestimation in other rodents. To solve this problem we assembled data of upper and lower tooth row length and body mass in extant rodents, and calculated regression equations for all rodents, rodents with premolars, rodents without premolars and for taxonomic groups at superfamily or family level. Data for complete tooth...
Tipo: Article / Letter to the editor Palavras-chave: Rodentia; Body mass; 42.84; 38.22.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/469427
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Estimating head and body length in fossil rodents Naturalis
Freudenthal, M.; Martín-Suárez, E..
We present estimates for head and body length (HBL) of fossil rodents. We assembled HBL data and tooth row length data (LTR, UTR) for a large number of extant rodents, and calculated regression lines of HBL on LTR and UTR for all rodents together (all-rodents equation), and for separate taxonomic groups (family equations). In fossil rodents, data for complete tooth rows are scarce, therefore we use the sum of the lengths of the teeth (LRsum, URsum) as a surrogate for tooth row length. The relation between this parameter and real tooth row length (LTR, UTR) is calculated on the basis of a number of populations for which both parameters are available. We estimate HBL of fossil rodents, using LRsum and URsum and the regression lines of extant rodents, and we...
Tipo: Article / Letter to the editor Palavras-chave: Rodentia; Body mass; Teeth; Tooth row length.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/607530
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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
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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
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La presencia de Ixodes luciae en el noroeste argentino y nuevos huéspedes para Ixodes pararicinus y algunas especies de Amblyomma (Acari: Ixodidae) Rev. Soc. Entomol. Argent.
Autino,Analía G.; Nava,Santiago; Venzal,José M.; Mangold,Atilio J.; Guglielmone,Alberto A..
El análisis de una colección de garrapatas de mamíferos del noroeste argentino, depositados en la Colección de Anexos de la Colección Mamíferos Lillo (CML) de la Universidad Nacional de Tucumán, permitió ampliar el área de distribución de Ixodes luciae Sénevet, a las provincias de Salta y Tucumán e incrementar su rango de huéspedes al roedor sigmodontino Calomys callosus (Rengger) y a los marsupiales de la familia Didelphidae Micoureus constantiae (Thomas), Thylamys cinderella Thomas y Thylamys venustus (Thomas). Se registró a C . callosus y Oligoryzomys destructor (Tschudi) como nuevos huéspedes de Ixodes pararicinus Keirans & Clifford, y a los Carnivora Lycalopex gymnocercus (Fischer) y Oncifelis geoffroyi (d´Orbigny & Gervais)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amblyomma; Carnivora; Didelphimorphia; Ixodes; Rodentia.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802006000100003
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Lamotheoxyuris ackerti n. gen., n. comb. (Nematoda: Heteroxynematidae) parasite of Neotoma spp. (Rodentia: Muridae) RChHN
FALCÓN-ORDAZ,JORGE; FERNÁNDEZ,JESÚS A; GARCÍA-PRIETO,LUIS.
On the basis of the revision of the type material of Aspiculuris ackerti Kruidenier & Mehra, 1959, and new specimens collected from Neotoma nelsoni Goldman, 1905 (Rodentia: Cricetidae), in Veracruz, Mexico, we herein to which A. ackerti is transferred as Lamotheoxyuris ackerti This new genus differs from all other genera included in 1) mouth surrounded by six lips; 2) extension of lateral alae describe a new genus (Lamotheoxyuris n. gen.), (Kruidener & Mehra, 1959) n. gen., n. comb. Heteroxynematinae by the following main traits: reduced; and 3) lack of caudal alae.
Tipo: Journal article Palavras-chave: Aspiculuris ackerti; Mexico; Nematoda; Rodentia; USA.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000200007
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Molecular and phylogenetic analysis of mitochondrial control region in Robertsonian karyomorphs of Graomys griseoflavus (Rodentia, Sigmodontinae) Mastozool. neotrop.
Catanesi,Cecilia I.; Vidal-Rioja,Lidia; Zambelli,Andrés.
The South American rodent Graomys griseoflavus is a species with a Robertsonian (Rb) autosomal polymorphism. A marked genetic differentiation between 2n=42-41 and 2n=38-34 karyomorphic groups was evidenced by cytogenetic and molecular analysis. The mitochondrial control region was sequenced in all Graomys karyomorphs for its characterization and used to trace more accurate phylogenetic relationships. The molecular organization showed to be coincident with the consensus molecular structure described for other rodent taxa, exhibiting the conserved domains ETAS (extended termination-associated sequences), CD (central domain) and CSB (conserved sequence block) 1, 2 and 3. Phylogenetic trees showed that 2n=42-41 and 2n=38-34 karyomorphic groups form separate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rodentia; Graomys; Robertsonian polymorphism; MtDNA; Phylogeny.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000100003
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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
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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
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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
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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
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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
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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
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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
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The porcupine Hystrix (Acanthion) brachyura punungensis subsp. Naturalis
Weers, D.J. van.
A large number of isolated cheek teeth and a mandibular fragment of porcupines from the Late Pleistocene fissure deposits near Punung, Java, are compared with extant H. (Acanthion) brachyura Linnaeus, 1758 (southeast Asia) and H. (Acanthion) javanica (F. Cuvier, 1823) (Java). Middle Pleistocene and Holocene specimens from Java are compared with the latter species. The Punung specimens belong to one species and are considered a new subspecies, Hystrix brachyura punungensis subsp. nov. The Middle Pleistocene specimens are allocated to Hystrix brachyura subsp. and those from the Holocene to Hystrix javanica.
Tipo: Article / Letter to the editor Palavras-chave: Rodentia; Porcupines; Pleistocene; Punung; Java; 42.84; 38.22.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/219301
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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
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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
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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
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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
Registros recuperados: 19
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