Sloth
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Identification of the tributary branches of the hepatic portal vein in the common sloth, Bradypus variegatus Schinz, 1825 (Pilosa: Bradypodidae)
RESUMO Bradypus variegatus, a preguiça-comum, pertence à família Bradypodidae, sendo considerada um modelo biológico a ser aplicado em pesquisas multidisciplinares. Este estudo foi desenvolvido a fim de ser aplicado à clínica médica e ao manejo adequado da preguiça-comum. Foram utilizadas 10 preguiças, obtidas após morte natural. Os animais foram f
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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2. Feeding habits of giant otters Pteronura brasiliensis (Carnivora: Mustelidae) in the Balbina hydroelectric reservoir, Central Brazilian Amazon
This study aimed to identify the diet of giant otters, Pteronura brasiliensis (Zimmermann, 1780) in the Balbina reservoir (01º55'S, 59º29'W), to compare it with literature data on the diet of giant otters from non-dammed areas, and to verify the effects of the seasonal changes in water levels on the feeding habits of Balbina otters. A total of 254 feces sa
Zoologia (Curitiba). Publicado em: 2010-02
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3. Esforço fiscal e transferências de recursos aos municípios cearenses / Tax effort and resource transfers to the municipalities of Ceará
This work investigates the relationship between tax revenue per capita and resource transfers in Ceará between 2003 and 2007, aiming to determine if the resources transferred are contributing to reward tax effort and/or reduce inequality, since this tends to encourage the self - sufficiency of the municipalities of Ceará. To do this, panel data models were
Publicado em: 2009
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4. Mammalian chromosome evolution: comparative studies by chromosome painting on two sloth species of Bradypodidae family and two marsupial species / Evolução cromossômica em mamíferos: estudos comparativos por pintura cromossômica em duas espécies de preguiças da família Bradypodidae e em duas espécies de marsupiais da família Didelphidae
In an attempt to shed additional light on mammalian karyotype evolution, we studied, by chromosome painting, the chromosomes of species from two mammalian basal groups, sloths and marsupials. We compared human chromosomes with the chromosomes of two species of three-toed sloths, Bradypus torquatus and Bradypus variegatus, establishing homologies. Analyzing t
Publicado em: 2009
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5. Novel 12S mtDNA findings in sloths (Pilosa, Folivora) and anteaters (Pilosa, Vermilingua) suggest a true case of long branch attraction
We sequenced 12S RNA mtDNA for the majority of the extant species of sloths and anteaters and compared our results with previous data obtained by our group using 16S RNA mtDNA in the same specimens and to GenBank sequences of the extinct giant sloth Mylodon. Our results suggest that pigmy-anteaters may be a case of the long-branch attraction phenomenon and a
Genetics and Molecular Biology. Publicado em: 2008
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6. Contextualização taxonômica, tafonômica e morfométrica dos remanescentes ósseos da megamastofauna da Gruta Cuvieri (MG), um sítio paleontológico do Pleistoceno tardio / Taxonomic, taphonomic and morphometric contextualization of the megamastofauna bone remains from Cuvieri Cave (MG), a Late Pleistocene Palaeontological Site.
The limited knowledge regarding the Brazilian megafauna (due to a mainly taxonomist tradition of brazilian paleontologists) and the lack of controlled stratigraphic excavations of paleontological sites in Brazil motivated the excavations of Cuvieri Cave, Minas Gerais, using an unprecedented method of excavation in the country, based on detailed exhumation of
Publicado em: 2008
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7. A simple protocol for the extraction and sequence analysis of DNA from study skin of museum collections
Museum collections have been widely used as sources of biological samples for molecular biology studies and there are several methodologies and techniques to obtain and analyze DNA from tissues archived in museums, but most of these protocols have been developed for a specific tissue or are commercial kits. We present a simple protocol for extracting and amp
Genetics and Molecular Biology. Publicado em: 2007
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8. Ritmo biolÃgico da temperatura corporal em preguiÃas (Bradypus variegatus)
Sloths are heterothermal mammals showing a mean Body Temperature (BT) of around 33ÂC, and behavioral responses possibly related with the light-dark cycle (LD) and ambient temperature. Reports on studies regarding BT rhythmicity during the 24h period are inconclusive. The aim of the present study was to characterize the biological rhythm of BT in Bradypus va
Publicado em: 2007
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9. ContribuiÃÃes ao estudo do eletrocardiograma e da pressÃo arterial em preguiÃas, Bradypus variegatus
Os objetivos deste trabalho foram caracterizar o eletrocardiograma (ECG) e estabelecer o ritmo endÃgeno da pressÃo arterial (PA) em livre-curso, correlacionando-o à ocorrÃncia de comportamentos, em preguiÃas, Bradypus variegatus. Para a caracterizaÃÃo do ECG foram estudados 16 animais (12m e 4f), cedidos pelo IBAMA, os quais foram previamente aclimati
Publicado em: 2007
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10. Fecal estradiol and progesterone metabolite levels in the three-toed sloth (Bradypus variegatus)
The present study was carried out to assess the possibility of measuring fecal steroid hormone metabolites as a noninvasive technique for monitoring reproductive function in the three-toed sloth, Bradypus variegatus. Levels of the estradiol (E2) and progesterone (P4) metabolites were measured by radioimmunoassay in fecal samples collected over 12 weeks from
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-02
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11. Métodos emergentes de física-estatística aplicados a séries temporais
The main objective of the present work was to apply recently developed in methods in physics-statistics to the time series, especifically in this work, to intervals of heart beats obtained from blood pressure signs (BP) of the sloth (Bradypus variegatus), with the purpose of identifying differences in fractality terms in the system of autonomous control rela
Publicado em: 2006
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12. Perfil hematimÃtrico e identificaÃÃo da hemoglobina do bicho preguiÃa Bradypus variegatus
The objective of the present study was to carry out hematimetric profile and identify the types of hemoglobin (Hb) present in the blood of the sloth, Bradypus variegatus, evaluating the influence of sex over these parameters. The present study was carried out in ten sloths (6 male and 4 female), unanaesthetized, kept in a restricted area, weighting (XÂSD) 3
Publicado em: 2006