Consulta: creatorFacets:"Lessa,Gisele"
Registros recuperados: 8
Data/hora: 02/06/2024 10:42:29

Densidade populacional de raposa-do-campo Lycalopex vetulus (Carnivora, Canidae) em áreas de pastagem e campo sujo, Campinápolis, Mato Grosso, Brasil
Provedor de dados: 76
Autores: Rocha,Ednaldo C.; Silva,Elias; Feio,Renato N.; Martins,Sebastião V.; Lessa,Gisele.
Diante da crescente descaracterização do Bioma Cerrado em função da expansão da fronteira agropecuária na região central do Brasil, torna-se importante avaliar a capacidade de adaptação das espécies ao ambiente antropizado. Neste sentido, este trabalho foi desenvolvido com o objetivo de estimar e comparar a densidade populacional da raposa-do-campo Lycalopex vetulus (Lund, 1842) em duas áreas com diferentes graus de alteração, pastagem e campo sujo, em Campinápolis, Mato Grosso. Para tanto, no período entre agosto a novembro de 2005, foram efetuados censos noturnos ao longo de transectos lineares, totalizando percursos de 129,8 km na área de campo sujo e 62,08 km na área de pastagem. Estimativas de densidade populacional foram geradas utilizando o programa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campo sujo; Pastagem; Densidade populacional; Raposa-do-campo; Lycalopex vetulus.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100011

Nuevos datos morfológicos y una hipótesis filogenética para Phaenomys (Rodentia, Cricetidae)
Provedor de dados: 81
Autores: Pardiñas,Ulyses F. J; D&amp;#8217;Elía,Guillermo; Lessa,Gisele; Passamani,Marcelo; Teta,Pablo.
Sobre la base de 2 ejemplares del roedor Phaenomys ferrugineus (Thomas), endémico de la Selva Atlántica, se aporta información novedosa sobre su anatomía y resultados del primer análisis filogenético basado en secuencias de ADN que incluye al género. Este sigmodontino se caracteriza por un cráneo con crestas supraorbitarias marcadas, un importante desarrollo de la región basicraneana, un patrón de circulación carotídea primitiva, tegmen timpánico presente, barra alisfenoidea ausente y mandíbula con gran desarrollo del sector donde inserta el músculo pterigoideo interno. Phaenomys presenta 12 costillas, un estómago unilocular-hemiglandular, carece de vesícula biliar y muestra un ciego de gran tamaño. Una hipótesis filogenética basada en datos moleculares...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brasil; Juliomys; Thomasomyini; Wiedomys; Wilfredomys.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000200006

A new genus for Habrothrix angustidens and Akodon serrensis (Rodentia, Cricetidae): again paleontology meets neontology in the legacy of lund
Provedor de dados: 81
Autores: Pardiñas,Ulyses F. J; Geise,Lena; Ventura,Karen; Lessa,Gisele.
Describimos un nuevo género de roedor sigmodontino para ubicar una especie fósil de los depósitos de Lagoa Santa, Habrothrix angustidens Winge y una especie viviente del sudeste de la Selva Atlántica descripta en los comienzos de la centuria pasada, Akodon serrensis Thos. Tentativamente, ambas formas son consideradas sinónimos a la espera de una revisión detallada de la diversidad del género. El nuevo género pertenece a la División Akodonde la diversa tribu Akodontini donde, sobre la base de evidencia molecular, resulta hermano de Thaptomys, otro akodontino especialista de selva. El nuevo género se caracteriza por una combinación única de rasgos morfológicos incluyendo una cola más corta que el largo cabeza-cuerpo, garras de los dedos de la mano y el pie...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Akodontini; Deltamys; Lagoa Santa; Muroidea; Selva Atlántica.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832016000100011

Chromosomal differentiation in Kerodon rupestris (rodentia: caviidae) from the brazilian semi-arid region
Provedor de dados: 81
Autores: Lessa,Gisele; Corrêa,Margaret M. O; Pessôa,Leila M; Zappes,Ighor A.
Kerodon rupestris (Wied, 1820) is the most specialized species among caviid rodents and is endemic to the extensive rocky outcrops in the semi-arid region in Brazil. Herein we describe different karyotypes for K. rupestris, based on samples collected in Itapajé, Ceará (CE), Iraquara in Bahia (BA), and Botumirim in Minas Gerais (MG). Our samples included northern, center and southern populations in the range of the species dis­tribution. The results were compared with a karyotype from Pernambuco previously described for the species. The diploid number (2n = 52) was constant among the analyzed population samples, but the fundamental number (FN) varied from 92 in Itapajé (CE) and Iraquara (BA), to 94 in Botumirim (MG). Pericentric inversions affecting one...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: C-Bands; Cytogenetics; Kerodon rupestris; NOR.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832013000200013

Vanished Lagoa Santa: rodent species loss in the last two centuries
Provedor de dados: 81
Autores: Boroni,Natália L; Pardiñas,Ulyses F. J; Lessa,Gisele.
The extensive work developed by Peter Lund and other naturalists in the nineteenth century in Lagoa Santa Karst has generated a large volume of data on the extinct and extant local fauna. Despite these classic pioneer works, little work has been done about the fauna currently present in the region. Therefore, this study analyzes the richness and diversity of the modern fauna of small rodents of the Lagoa Santa region and compares the results with the historical data of Lund and Winge. We collected owl pellets from calcareous caves in Lagoa Santa, Cordisburgo and Sete Lagoas. These pellets were divided in two categories for comparison: &amp;#8216;superficial&amp;#8217; (collected on the surface of the cave floor) and &amp;#8216;stratified&amp;#8217;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Environmental degradation; Herluf Winge; Owl pellets; Peter Lund.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832018000100003

Taxonomic identification using geometric morphometric approach and limited data: an example using the upper molars of two sympatric species of Calomys (Cricetidae: Rodentia)
Provedor de dados: 103
Autores: Boroni,Natália Lima; Lobo,Leonardo Souza; Romano,Pedro Seyferth R.; Lessa,Gisele.
ABSTRACT The taxonomic identification of micromammals might be complicated when the study material is fragmented, as it is the case with pellets and fossil material. On the other hand, tooth morphology generally provides accurate information for species identification. Teeth preserve notably well, retaining their original morphology, unlike skulls and mandibles, which can get crushed or have missing parts. Here, we explored a geometric morphometrics approach (GM) to identify fragmented specimens of two sympatric Calomys Waterhouse, 1837 species - Calomys tener (Winge, 1888) and Calomys expulsus (Lund, 1841) - using the morphology of intact molars as the basis for identification. Furthermore, we included some specimens of uncertain taxonomic identification...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Owl pellets; Sigmodontinae; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100315

The cuticular profile of the aristiform hair as a characteristic feature of Abrawayaomys (Rodentia: Cricetidae)
Provedor de dados: 103
Autores: Duarte,Tarcísio de Souza; Lessa,Gisele.
ABSTRACT The cuticle is the outermost of the three cellular layers of the mammalian hair. It comprises numerous keratinized scales, whose morphology, combined with other microscopic characteristics of the hair, confers characteristic signature traits to various different species. This study aimed to analyze whether the cuticular patterns of the aristiform hair had any signature implications for the two species of the genus Abrawayaomys Cunha &amp; Cruz, 1979. We identified the cuticular profiles of A. ruschi and A. chebezi. Both species have similar hair pattern. The base of the hair shows "irregular waved" scales with smooth and continuous edges, and the apex showed "transversal waved" small-sized scales with continuous and ornamented edges. The middle...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Micromorphology; Sigmodontinae; Spines; Taxonomy; Tricology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000400321

Heterogeneidade estrutural e diversidade de pequenos mamíferos em um fragmento de mata secundária de Minas Gerais, Brasil
Provedor de dados: 104
Autores: Paglia,Adriano Pereira; De Marco Júnior,Paulo; Costa,Fernando Martins; Pereira,Ronaldo Fernandes; Lessa,Gisele.
The aim is to determine the relationship between the diversity of small mammals and the structural heterogeneity and/or secondary successional stages in an Atlantic forest fragment at Viçosa (Minas Gerais). We used Sherman and hook live traps to sample this fauna, monthly from may 1992 to april 1993 in three areas: an abandoned plantation of Melinis minutiflora (campo) and two distinct forest areas (capoeira and mata). The structural heterogeneity was determined as a function of the presence of dead trees, pioneer species, epiphytes, the distances between trees, the tree height and basal area measured by a modified quadrant sample method (Cottam &amp;amp; Curtis 1945). lt was sampled a total of 340 individuals belonging to 17 species. The homogeneous...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community structure; Habitat heterogeneity; Small mammal diversity.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100010