Sloth
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Estudo da distribuiÃÃo temporal dos comportamentos em preguiÃas Bradypus variegatus, Wetzel, 1982
Os ritmos biolÃgicos estÃo presentes em todos os organismos vivos. O seu controle endÃgeno à feito por marcapassos, tambÃm chamados de osciladores. Os ritmos endÃgenos estÃo harmonizados, exogenamente, com inÃmeras variÃveis ambientais e geofÃsicas. A principal e mais expressiva delas à o ciclo dia/noite, claro/escuro (CE). O perÃodo endÃgeno de
Publicado em: 2006
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14. Electrocardiographic studies of the three-toed sloth, Bradypus variegatus
Electrocardiograms (ECG) obtained with standard limb leads and augmented unipolar limb leads were recorded from 17 unanesthetized adult sloths. The animals were held in their habitual position in an experimental chair. We determined heart rate and rhythm from the R-R intervals, the amplitude and duration of each wave, and the duration of the segments and int
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-12
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15. Dental morphology of the maned sloth, Bradypus torquatus, Illiger, 1858 / Morfologia dental da preguiça-de-coleira Bradypus torquatus, Illiger, 1858
As preguiças são exclusivamente herbívoras, alimentando-se de folhas, flores, brotos, talos verdes e frutos da umbaúba ou guaruma. A anatomia do dente é o alvo desta pesquisa, que teve suas primeiras investigações objetivando estabelecer dados comparativos de sua dentição e de outros mamíferos, inclusive o homem. Foram estudadas algumas particulari
Publicado em: 2005
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16. Colheita e avaliação do sêmen do bicho-preguiça (Bradypus sp.) / Sêmen collection and avaliation of the sloth (Bradypus sp.)
Os bichos-preguiça são animais extremamente sensíveis e sofrem com a destruição e a fragmentação das matas. Apresentam baixa taxa de crescimento populacional e necessitam serem mais estudados para que se possa pensar na preservação da espécie. Este estudo teve como objetivo captar informações sobre o sêmen deste animal. Para tanto 18 machos fora
Publicado em: 2005
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17. Study of the lingual mucosa and surface of interface epithelium-connective tissue of the maned sloth (Bradypus torquatus, Iliger, 1811), employing light and scanning electron microscopy methods / Estudo da mucosa da língua e da superficie de interface epitélio-tecido conjuntivo da preguiça-de-coleira (Bradypus torquatus, Iliger, 1811), empregando os métodos de microscopia de luz e eletrônica de varredura
Estudo das superfícies dorsal e ventral da língua e da superfície de interface epitélio-tecido conjuntivo de Bradypus torquatus, foi realizado empregando-se os métodos de microscopia de luz e microscopia eletrônica de varredura. As línguas de Bradypus torquatus foram removidas, dissecadas e seccionadas em 3 partes: rostral, média e caudal e tratadas
Publicado em: 2005
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18. Determinação de metabólitos esteroidais para estudo da função ovariana no bicho preguiça (Bradypus variegatus)
The aim of this study was to investigate in sloths (Bradypus variegatus), the circulating levels of estradiol (E2) and progesterone (P4) by monitoring the fecal metabolites of these steroids to obtain information on the estrous cycle and ovarian function. Four apparently healthy female sloths, supplied by IBAMA (Brazilian Environmental Agency) were studied.
Publicado em: 2004
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19. Morfologia do sistema reprodutor masculino da preguiça-de-coleira (Bradypus torquatus, Illiger, 1811) / Morphology of the male reproduction system the three-toed sloth (Bradypus torquatus - Illiger, 1811)
Sloths are mammals (Class: Mammalia) from Order Xenarthra (or Edentata). We used in this research three-toed sloth (Bradypus torquatus) being six males and one female at different ages. These animals had been yielded to the Anatomy Laboratory of Surgery Department at College of Veterinary Medicine and Zootecny of São Paulo University (FMVZ/USP) from the Mat
Publicado em: 2003
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20. Brazilian distribution of Amblyomma varium Koch, 1844 (Acari: Ixodidae), a common parasite of sloths (Mammalia: Xenarthra)
Amblyomma varium, commonly known in Brazil as the "carrapato-gigante-da-preguiça" (sloth's giant tick) is found from southern Central America to Argentina. The present study adds information on the geographical distribution of A. varium, as well as on their hosts, based on material deposited in the main Brazilian collections and on the available literature.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-12
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21. The effect of feeding on the respiratory activity of the sloth
The aim of the present study was to confirm whether feeding influences the resting breathing rate and to observe possible alterations in blood gas and pH levels produced by feeding in unanesthetized sloths (Bradypus variegatus). Five adult male sloths (4.1 ± 0.6 kg) were placed daily in an experimental chair for a period of at least 4 h for sitting adaptati
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-07
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22. THE IMPLEMENTATION OF THE SLOTH PROGRAMMING LANGUAGE / A IMPLEMENTAÇÃO DA LINGUAGEM DE PROGRAMAÇÃO SLOTH
This work describes a new functional programming language and its implementation. Sloth is a non-strict purely functional interpreted programming language, which supports high order functions as first class values, structured data types, and pattern-matching based function definitions. Sloth was created for academical use in activities related to the use and
Publicado em: 2002
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23. Sloth biology: an update on their physiological ecology, behavior and role as vectors of arthropods and arboviruses
This is a review of the research undertaken since 1971 on the behavior and physiological ecology of sloths. The animals exhibit numerous fascinating features. Sloth hair is extremely specialized for a wet tropical environment and contains symbiotic algae. Activity shows circadian and seasonal variation. Nutrients derived from the food, particularly in Bradyp
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-01
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24. Phalangeal curvature and positional behavior in extinct sloth lemurs (Primates, Palaeopropithecidae)
Recent paleontological discoveries in Madagascar document the existence of a diverse clade of palaeopropithecids or “sloth lemurs”: Mesopropithecus (three species), Babakotia (one species), Palaeopropithecus (three species), and Archaeoindris (one species). This mini-radiation of now extinct (“subfossil”) lemurs is most closely related to the living
The National Academy of Sciences of the USA.