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Registros recuperados: 21
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A comparison of abundance estimators for small mammal populations Rev. Bras. Zool.
Pacheco,Marcelle; Kajin,Maja; Gentile,Rosana; Zangrandi,Priscilla L.; Vieira,Marcus V.; Cerqueira,Rui.
A major difficulty in the application of probabilistic models to estimations of mammal abundance is obtaining a data set that meets all of the assumptions of the model. In this paper, we evaluated the concordance correlation among three population size estimators, the minimum number alive (MNA), jackknife and the model suggested by the selection algorithm in CAPTURE (the best-fit model), using long-term data on three Brazilian small mammal species obtained from three different studies. The concordance correlation coefficients between the abundance estimates indicated that the probabilistic and enumeration estimators were highly correlated, giving concordant population estimates, except for one species in one of the studies. The results indicate the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Rainforest; Capture-mark-recapture; Didelphimorphia; MNA; Rodentia.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200008
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A Molecular Perspective On The Diversification Of Short-Tailed Opossums (Monodelphis: Didelphidae) Mastozool. neotrop.
Solari,Sergio.
As currently understood Monodelphis includes more than 22 species and is the most diverse genus of opossums (Didelphimorphia). No complete evaluation of the systematic relationships of its species has been attempted, despite the fact that several species groups and even genus-level groups have been proposed based on morphology, and that some of them are limited to recognized biogeographic regions. Here, genealogic relationships among 17 species were assessed based on phylogenetic analyses of 60 individual sequences (801 base pairs of the mitochondrial cytochrome b gene). The analyses cast doubts on the monophyly of Monodelphis, but species were consistently discriminated into eight species groups: (a) brevicaudata group, with five species, (b) adusta...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Phylogenetics; Species limits; Taxonomy.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000200007
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Diet variation of the marsupials Didelphys aurita and Philander frenatus (Didelphimorphia, Didelphidae) in a rural area of Rio de Janeiro state, Brazil Mastozool. neotrop.
Ceotto,Paula; Finotti,Ricardo; Santori,Ricardo; Cerqueira,Rui.
We studied the natural diet of two didelphid marsupial species, Didelphis aurita and Philander frenatus, at a rural area on southeastern Brazil, through fecal sample analysis. Data analysis included intraspecific comparisons (age, gender, and climatic seasons) and interespecific comparisons. Frequencies of food items were compared with other studies to analyze diet differences in a spatial scale. Invertebrates were the most frequent food category found in samples of both species, followed by fruits and vertebrates. There were no differences in the consumption of invertebrates, vertebrates and fruits between sexes in the two species, but both consumed more fruits in more humid months. Juveniles of P. frenatus consumed less vertebrates than adults or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Food habits; Mammal ecology; Neotropics.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000100005
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Differencial efficiency of two sampling methods in capturing non-volant small mammals in an area in eastern Amazonia Acta Amazonica
ARDENTE,Natália Carneiro; FERREGUETTI,Átilla Colombo; GETTINGER,Donald; LEAL,Pricila; MARTINS-HATANO,Fernanda; BERGALLO,Helena Godoy.
ABSTRACT This study was the first to evaluate the efficiency of trapping methods in the study of small mammals in the Carajás National Forest, southeastern Brazilian Amazon. It is an area with a unique vegetation type (metalofilic savannah or Canga). The aims of this study were to compare the efficiency of two trapping methods (i.e. live-traps and pitfalls), the bait types used, and evaluate if trapping success varied seasonally. We used four sampling grids, each with six parallel transects. The trap effort for live-traps and pitfalls was 51,840 trap*nights and 10,800 bucket*nights, respectively. We used three types of bait: a paste of peanut butter and sardines, bacon, and bananas. We placed one type of bait in each trap, alternating between points. We...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Live-traps; Pitfall-traps; Didelphimorphia; Rodentia; Capture rate.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200123
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Diversidade de ixodida em roedores e marsupiais capturados no Parque Estadual da Pedra Branca, Rio de Janeiro, Brasil Arq. Bras. Med. Vet. Zootec.
Oliveira,H.H.; Gomes,V.; Amorim,M.; Gazêta,G.S.; Serra-Freire,N.M.; Quinelato,I.P.F.; Morelli-Amaral,V.F.; Almeida,A.B.; Carvalho,R.W.; Carvalho,A.G..
Durante 24 meses foram capturados, inspecionados e liberados no mesmo espaço do Parque Estadual da Pedra Branca, Rio de Janeiro, 96 marsupiais e 64 roedores. Neles foram recolhidos manualmente 105 carrapatos, de 10 espécies em duas famílias. A espécie de carrapato dominante entre os roedores foi Amblyomma longirostre e entre os marsupiais foi Ixodes loricatus. Houve correlação direta significativa entre a temperatura e a intensidade de parasitismo por carrapatos.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ixodidae; Didelphimorphia; Rodentia; Mata Atlântica.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000401097
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Diversity of small land mammals in a subtropical Atlantic forest in the western region of the state of Santa Catarina, southern Brazil Biota Neotropica
Maestri,Renan; Galiano,Daniel; Kubiak,Bruno Busnello; Marinho,Jorge Reppold.
Small land mammals possess features that significantly influence the dynamics of ecosystems and participate in various levels of the food web. In the Brazilian Atlantic Forest the richness of these animals is high, which makes them even more ecologically and numerically relevant in this environment. In this context, we investigated the species composition of small mammals in an unexplored area of southern Brazil, and compared the species composition of this area with other Atlantic Forest regions in order to understand how this community is related to others. The study area was located in an interior Atlantic forest formation, at a transition region between deciduous and Araucaria forests. Small mammals were captured at five collection points using pitfall...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Richness; Species composition; Uruguay River; Rodentia; Didelphimorphia.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400204
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First record of the bushy-tailed opossum, Glironia venusta, Thomas, 1912, (Didelphimorphia) from Manaus, Amazonas, Brazil Acta Amazonica
Calzada,Javier; Delibes,Miguel; Keller,Claudia; Palomares,Francisco; Magnusson,William.
A new record of a very rarely observed mammal, the bushy-tailed opossum, Glironia venusta (Didelphimorphia), was obtained for the Adolpho Ducke Forest Reserve, Manaus, Amazonas state, Brazil. Only 17 other records existed of this species, most from the 1980s. There were only three previous records of the species from Brazil (in the states of Pará, Amazonas and Rondônia). This new record supports the notion that G. venusta is a locally rare species throughout its range, but widely distributed in Brazilian Amazonia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Bushy-tailed opossum; Didelphidae; Didelphimorphia; Glironia venusta.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400027
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Food habits and carnivory by a small size opossum, Gracilinanus agilis (Didelphimorphia: Didelphidae) Mastozool. neotrop.
Lessa,Leonardo G; Geise,Lena.
We investigated the diet of gracile mouse opossum, Gracilinanus agilis (Burmeister, 1854), from the analysis of 144 fecal samples collected between November 2009 and October 2011 in an area of savanna riparian forest in the Brazilian Cerrado. Invertebrates were the most frequently consumed food items (96.5%) followed by fruits of pioneer species (29.8%) and flowers (6%). We also observed the presence of fragments of bird vertebrae and downs in samples from 2 adult males, this being the first record of predation on small vertebrates by G. agilis. The presence of fragments of birds in the feces of the gracile mouse opossum suggests that despite the small size of this species and its primarily insectivorous habits, small vertebrates may be included in its diet.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Cerrado; Didelphimorphia; Diet; Feeding ecology; Marsupials.
Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000100016
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Jumping ability in the arboreal locomotion of didelphid marsupials Mastozool. neotrop.
Delciellos,Ana Cláudia; Vinícius Vieira,Marcus.
Didelphid marsupials are considered to cross discontinuities between arboreal supports using a cautious locomotion, using the prehensile tail as fifth limb. However, this ability was only described for Caluromys philander. We describe and compare the locomotory performance and postural behavior of seven species of didelphid marsupials crossing discontinuities between artificial supports representing arboreal gaps. Individuals were captured in areas of Atlantic Forest in Rio de Janeiro State, Brazil. Animals were stimulated to jump from a fixed horizontal support one meter above the ground to an inclined support of same diameter. We measured the maximum distance of jump (40, 60, 80 or 100 cm) and reach or distance actually reached by the jump. Arboreal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Body size; Didelphimorphia; Ecomorphology; Locomotion.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000200003
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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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Los Metatheria sudamericanos de comienzos del Neógeno (Mioceno Temprano, Edad-mamífero Colhuehuapense): Parte I: Introducción, Didelphimorphia y Sparassodonta Ameghiniana
Goin,Francisco; Abello,Alejandra; Bellosi,Eduardo; Kay,Richard; Madden,Richard; Carlini,Alfredo.
Este trabajo constituye el primero, de una serie de tres, dedicado a revisar la taxonomía de los Metatheria del Mioceno Temprano (Edad-mamífero Colhuehuapense) de América del Sur. Los niveles colhuehuapenses de la Gran Barranca del Lago Colhue Huapi (Departamento de Sarmiento, Provincia del Chubut, Argentina) son los más ricos en especímenes de esta edad. Los paisajes colhuehuapenses de Patagonia central se desarrollaron en la planicie costera de un área peninsular, inicialmente sometida a una intensa erosión y luego agradada por sedimentos fluviales y loéssicos (eólicos). Los registros de la vegetación (palinomorfos y fitolitos) sugieren una etapa de importantes cambios ambientales, desde condiciones xéricas a cálido-húmedas. En zonas elevadas o alejadas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: América del Sur; Patagonia; Mioceno Temprano; Edad Colhuehuapense; Marsupialia; Didelphimorphia; Sparassodonta.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000100003
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Non-volant small mammals at an Atlantic forest area situated nearby a limestone quarry (Limeira quarry), state of São Paulo, Brazil Biota Neotropica
Leiner,Natália Oliveira; Silva,Wesley Rodrigues.
Our aim was to survey the non-flying small mammals inhabiting an Atlantic forest area situated nearby a limestone quarry (Limeira quarry), located at Ribeirão Grande municipality (SP), southeastern Brazil. Species were captured with pitfall and Sherman traps along eight pairs of 60 m transects distributed at four different distances from the quarry (60, 220, 740 and 1300 m). Between October 2005 and January 2008, 20 small mammal species (11 rodents and nine marsupials) were captured through 4080 pitfall trap-nights and 2040 Sherman trap-nights. The high values of richness, diversity (H' = 2.65) and equability (J = 0.88), and the presence of endemic and threatened species indicates a preserved study site and small mammal assemblage. Marmosops incanus,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Faunistic inventory; Mining impacts; Didelphimorphia; Rodentia.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400020
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Patterns of arboreal and terrestrial space use by non-volant small mammals in an Araucaria forest of southern Brazil Anais da ABC (AABC)
ABREU,MAURY S.L.; OLIVEIRA,LARISSA R. DE.
Despite the advances in the techniques for researching arboreal small mammals, detailed ecological data, such as habitat use patterns, are practically nonexistent for many species. Using 150 live-traps installed on the ground, understory (1.0-5.0m) and canopy (>5.0m) we investigated patterns of arboreal and terrestrial space use by small mammals in an Araucaria Forest in southern Brazil (29°29′08″S; 50°12′26″W). We also measured 19 microhabitat variables that could potentially influence the abundance of such mammals on each trap station. The results indicated that Akodon montensis and A. serrensis were mainly terrestrial. Delomys dorsalis was also terrestrial, but it also used understory (17.24% of captures). Juliomys sp. and Gracilinanus microtarsus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Micro-habitat; Mamíferos neotropicais; Rodentia; Estratificação vertical.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200807
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Pequenos mamíferos não voadores em fragmentos de Mata Atlântica e áreas agrícolas em Viana, Espírito Santo, Brasil Biota Neotropica
Pinto,Israel de Souza; Loss,Ana Carolina Covre; Falqueto,Aloísio; Leite,Yuri Luiz Reis.
Nós inventariamos os pequenos mamíferos não-voadores em Viana, Espírito Santo, sudeste do Brasil, em 1981-1982 e 2006-2007. Foram capturados 439 pequenos mamíferos não-voadores pertencentes a três ordens (Didelphimorphia, Rodentia e Lagomorpha) e seis famílias (Didelphidae, Sciuridade, Cricetidae, Muridae, Echimyidae e Leporidae). As espécies mais abundantes foram os roedores Akodon cursor e Nectomys squamipes e o marsupial Metachirus nudicaudatus. Registramos pela primeira vez a ocorrência do roedor equimídeo Euryzygomatomys spinosus no estado do Espírito Santo. A riqueza específica (S = 21) e o índice de diversidade de Shannon (H = 2,23) estão entre os maiores registrados para pequenos mamíferos da Mata Atlântica no estado, mesmo quando comparados aos...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inventário; Didelphimorphia; Lagomorpha; Rodentia.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300030
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Phylogeny of Thylamys (Didelphimorphia, Didelphidae) species, with special reference to Thylamys karimii Iheringia, Sér. Zool.
Carvalho,Bianca de A; Oliveira,Luiz F. B; Mattevi,Margarete S.
The genus Thylamys Gray, 1843 lives in the central and southern portions of South America inhabiting open and shrub-like vegetation, from prairies to dry forest habitats in contrast to the preference of other Didelphidae genera for more mesic environments. Thylamys is a speciose genus including T. elegans (Waterhouse, 1839), T. macrurus (Olfers, 1818), T. pallidior (Thomas, 1902), T. pusillus (Desmarest, 1804), T. venustus (Thomas, 1902), T. sponsorius (Thomas, 1921), T. cinderella (Thomas, 1902), T. tatei (Handley, 1957), T. karimii (Petter, 1968), and T. velutinus (Wagner, 1842) species. Previous phylogenetic analyses in this genus did not include the Brazilian species T. karimii, which is widely distributed in this country. In this study, phylogenetic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytochrome b; Didelphidae; Didelphimorphia; South America; Thylamys phylogeny.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000400012
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Potential seed dispersal by Didelphis albiventris (Marsupialia, Didelphidae) in highly disturbed environment Biota Neotropica
Cantor,Mauricio; Ferreira,Letícia Andrade; Silva,Wesley Rodrigues; Setz,Eleonore Zulnara Freire.
Urban forests are usually isolated and highly disturbed, however they are important shelters for tolerant animal species. Their food habits expose the different ecological roles these animals perform in the habitat. We analyzed the contribution of Didelphis albiventris Lund (1840), as a seed disperser, to the vegetation renewal of an urban forest fragment, describing its frugivorous diet and testing the viability of ingested seeds. Both male and female of white-eared opossum included a vast variety of items in their diet, mainly invertebrates and fruits. Fruits were consumed during all year round and seasonality was not observed. The majority of consumed fruits was from pioneer plant species, which is common in disturbed areas, in accordance to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Seed dispersal; Seed germination; Forest restoration; Remnant forest; Didelphis albiventris.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200004
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Primer registro de Monodelphis kunsi (Didelphimorphia, Didelphidae) para Argentina Mastozool. neotrop.
Jayat,J. Pablo; Miotti,M. Daniela.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Distribution; First record; Monodelphis; Northwestern Argentina.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832005000200014
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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
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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 influence of fire and livestock grazing on the assemblage of non-flying small mammals in grassland-Araucaria Forest ecotones, southern Brazil Rev. Bras. Zool.
Pedó,Ezequiel; Freitas,Thales R. O. de; Hartz,Sandra M..
Grazing and fire, used in pasture regeneration practices, are inter-related activities in livestock management. Both activities affect habitat characteristics by changing the structure of the herbaceous and shrubby vegetation, reducing their biomass and litter cover. This study evaluated the effect of fire and livestock grazing on the assemblage of non-flying small mammals in grassland-Araucaria forest ecotones in southern Brazil. We compared four areas frequently affected by livestock management with four protected areas. Surveys were carried out in four sampling periods, one in each season of 2004. We captured a total of 325 individuals from 12 species of rodents - Akodon montensis Thomas, 1913, Akodon paranaensis Christoff, Fagundes, Sbalqueiro, Mattevi...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Campos; Didelphimorphia; Habitat loss; Rodentia.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000400005
Registros recuperados: 21
Primeira ... 12 ... Última
 

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