Relevant bibliographies by topics / Bradypus tridactylus

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Academic literature on the topic 'Bradypus tridactylus'

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Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Bradypus tridactylus"

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Hayssen, Virginia. "Bradypus tridactylus (Pilosa: Bradypodidae)." Mammalian Species 839 (July 27, 2009): 1–9. http://dx.doi.org/10.1644/839.1.

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Peres, M. A., A. B. Nascimento, V. P. Oliveira, et al. "228 COLLECTION AND EVALUATION OF SEMEN OF SLOTH (BRADYPUS TRIDACTYLUS)." Reproduction, Fertility and Development 18, no. 2 (2006): 222. http://dx.doi.org/10.1071/rdv18n2ab228.

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Sloths are animals that suffer with the destruction and fragmentation of forests. They experience a low population growth rate and need to be studied further for the preservation of the species. The objective of this study was to contribute data relevant to the reproductive physiology of this species, selecting a semen collection method and evaluating seminal characteristics that have never before been described in the literature. Fifteen Bradypus tridactylus males were captured in Manaus, Brazil. Nine of them were captured during the first half of 2004 (Group 1) and the others during the second half (Group 2). The animals were anesthetized with an i.m. injection of a combination of ketamine (10 mg/kg) and xylasine (1 mg/kg). Semen was collected by electroejaculaton using a rectal probe designed for domestic cats. Electrostimulations were given with a 0-100 mA/0-12 V variable electrostimulator in sequences of three progressive intensities, with ten repetitions at each intensity and variation of 10 mA between them. They started with 20 mA and peaked at 60 mA. Each stimulus lasted about 3 s. It was not possible to define the best intensity of stimulus to use and ejaculation could take place at any time of the stimulation (Fisher's exact test). Sperm motility and vigor were immediately analyzed. Sperm count was determined in a Neubauer chamber at a 1:50 (v:v) dilution in formol-saline. Morphology was examined at the same dilution. Fresh semen smears were made and stained using Spermac Stain� (Minit�b, Tiefenbach, Germany) protocol for a better evaluation of the spermatozoa acrosome and midpiece. In both methods 200 cells were counted for morphological evaluation. All animals ejaculated approximately 30 �L to 90 �L of semen. In some ejaculates the semen was too thin and flowed down the penis, so that the volume effectively collected was not sufficient for a complete spermiogram. Spermatozoa presented a wide variety of defects, and some physical characteristics differed (not significantly) between samples collected during the first and second halves of the year. Motility and vigor were very low, the sperm did not show forward progression, only oscillatory movement. However, a high percentage (80%) of spermatozoa were moving. The concentration in Group 1 ranged from 5000 spermatozoa/mm3 to 685 500 spermatozoa/mm3 (mean � 218 571.4 � 242 499.4). Sperm concentation was not assessed in Group 2. The morphology of the head could be elongated or squared, or the head could have a base narrower than the apex. The tail showed a unique feature: the midpiece narrowed abruptly, forming a nip in its transition to the tail. This was similar in appearance to the segmental aplasia of the mitochondrial sheath, but it was considered normal because it was observed in all spermatozoa. Although further studies are necessary to standardize the semen evaluation of sloths and to define the best protocol for electroejaculation, this pioneering study has shown the characteristics of sloth spermatozoa and the possibility of collecting semen throughout the electroejaculation process in this species. This work was supported by Fapesp 03/07457-4.
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Tuúry, E., A. Costa Messias, K. Belák, and E. J. Gimeno. "Acute Disseminated Toxoplasmosis in a Captive Three-toed Sloth (Bradypus tridactylus)." Journal of Comparative Pathology 125, no. 2-3 (2001): 228–31. http://dx.doi.org/10.1053/jcpa.2001.0495.

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Peres, M. A., E. J. Benetti, M. P. Milazzotto, J. A. Visintin, M. A. Miglino, and M. E. O. A. Assumpção. "Collection and evaluation of semen from the three-toed sloth (Bradypus tridactylus)." Tissue and Cell 40, no. 5 (2008): 325–31. http://dx.doi.org/10.1016/j.tice.2008.03.001.

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Sonntag, Chas F. "A Contribution to the Anatomy of the Three-toed Sloth (Bradypus tridactylus)." Proceedings of the Zoological Society of London 91, no. 1 (2009): 157–77. http://dx.doi.org/10.1111/j.1096-3642.1921.tb03254.x.

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KLEINSCHMIDT, Traute, Josefine MÄRZ, and Gerhard BRAUNITZER. "The Primary Structure of Pale-Throated Three-Toed Sloth (Bradypus tridactylus,Xenarthra) Hemoglobin." Biological Chemistry Hoppe-Seyler 370, no. 1 (1989): 303–8. http://dx.doi.org/10.1515/bchm3.1989.370.1.303.

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BELL, THOMAS. "XII. Observations on the Neck of the Three-toed Sloth, Bradypus tridactylus, Linn." Transactions of the Zoological Society of London 1, no. 2 (2010): 113–16. http://dx.doi.org/10.1111/j.1096-3642.1835.tb00608.x.

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Toyama, Yoshiro, Francisco Ureña Calderón, and Rafael Quesada. "Ultrastructural study of crystalloids in Sertoli cells of the three-toed sloth (Bradypus tridactylus)." Cell and Tissue Research 259, no. 3 (1990): 599–602. http://dx.doi.org/10.1007/bf01740789.

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Palmeira, Denia, Fittipaldi Duarte, Sara Espe Huggins, Carlos Peres Da Costa, and Angela Merice Leal. "Responses of the three-toed sloth, Bradypus tridactylus, to some commonly used pharmacologic agents. I. Autonomic drugs." Comparative Biochemistry and Physiology Part C: Comparative Pharmacology 88, no. 2 (1987): 275–85. http://dx.doi.org/10.1016/0742-8413(87)90122-8.

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Taube, Erica, Jean-Christophe Vie, Pascal Fournier, Christophe Genty, and Jean-Marc Duplantier. "Distribution of Two Sympatric Species of Sloths (Choloepus didactylus and Bradypus tridactylus) along the Sinnamary River, French Guiana1." Biotropica 31, no. 4 (1999): 686–91. http://dx.doi.org/10.1111/j.1744-7429.1999.tb00418.x.

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Dissertations / Theses on the topic "Bradypus tridactylus"

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Corrêa, Ana Paula Melo, and 95-99962-6272. "Verificando a ocorrência de hibridização entre duas espécies de preguiça, Bradypus tridactylus Linnaeus, 1758 e Bradypus variegatus, Schinz, 1825 no município de Manaus, Amazonas - Brasil." Universidade Federal do Amazonas, 2015. http://tede.ufam.edu.br/handle/tede/6157.

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Submitted by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2018-02-09T14:38:37Z No. of bitstreams: 2 Dissertação_Ana Paula M. Correa.pdf: 1855323 bytes, checksum: 8f38a1d8bb308528223d18c49141047c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2018-02-09T14:39:09Z (GMT) No. of bitstreams: 2 Dissertação_Ana Paula M. Correa.pdf: 1855323 bytes, checksum: 8f38a1d8bb308528223d18c49141047c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 2018-02-09T14:39:09Z (GMT). No. of bitstreams: 2 Dissertação_Ana Paula M. Correa.pdf: 1855323 bytes, checksum: 8f38a1d8bb308528223d18c49141047c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2015-06-11<br>CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Belonging to Infraorder Hairy, Bradipodiade family, Bradypus tridactylus and Bradypus variegatus sloths can be found in the Amazon biome. They present diagnostic characters such as color of the face coat and throat which are golden yellow and brown, absence and presence of black spot around the eyes, respectively, that distinguish them from each other. In forest fragments of Manaus-AM, it is possible to observe sloths that have intermediate characteristics between the two species. The objective of this study was to identify the sloths found in Manaus, checking for the occurrence of hybridization between them. A total of 32 samples were used, seven control region of B. variegatus, one of the region control B. tridactylus and the other 24 forest fragments belonging to the city of Manaus, where we identify individuals of B. variegatus, B. tridactylus and Bradypus sp., based on morphological characteristics. For the present study we used the control of mitochondrial DNA region (Dloop) and 10 microsatellite loci of the nuclear DNA. Results of molecular analyzes of Dloop show the existence of two well-supported monophyletic clades, separating the two species of sloths: B. tridactylus and B. variegatus, in the north and south of the Rio Negro and Amazon, respectively. Through analysis of the STRUCTURE program, it was found that the number of genetically distinct groups biological was K=2, it is possible to distinguish pure individuals of each species, and it was possible to observe the existence of individuals association with different proportions one of the clusters. These individuals were identified as hybrids, and it is possible to can check the occurrence of F1 generation, F2 and backcross, indicating the fertility of them. The consequences of the existence of fertile hybrids to the evolutionary process of the species involved can range from insignificant to drastic, so that it is necessary studies that generate empirical information, aimed at assisting in the development of management strategies, conservation and protection of these species.<br>Pertencentes a Infraordem Pilosa, família Bradipodiade, as preguiças Bradypus tridactylus e Bradypus variegatus podem ser encontradas no bioma Amazônia. Apresentam caracteres diagnósticos como cor da pelagem da face e da garganta em amarelo dourado e marrom, e ausência e presença de mancha negra ao redor dos olhos, respectivamente, que as distinguem entre si. Nos fragmentos florestais da região do município de Manaus-AM, é possível observar preguiças que possuem características intermediarias entre as duas espécies. O objetivo deste trabalho foi identificar as preguiças encontradas em Manaus, verificando se há ocorrência de hibridização entre elas. Foram utilizadas um total de 32 amostras, sendo sete da região controle de B. variegatus, uma da região controle de B. tridactylus e as outras 24 pertencentes aos fragmentos florestais da cidade de Manaus, em que são identificados indivíduos de B. variegatus, B. tridactylus e Bradypus sp., baseando-se nas características morfológicas. Para o presente estudo foram utilizadas a região controle do DNA mitocondrial (Dloop) e 10 loci microssatélites do DNA nuclear. Resultados das análises moleculares de Dloop mostram a existência bem suportada de dois clados monofiléticos, separando as duas espécies de preguiça: B. tridactylus e B. variegatus, ao norte e ao sul do Rio Negro e Amazonas, respectivamente. Através da análise do programa STRUCTURE, verificou-se que o numero de grupos biológicos geneticamente distintos foi de K=2, sendo possível distinguir indivíduos puros de cada uma das espécies, bem como foi possível observar a existência de indivíduos com diferentes proporções de associação a um dos clusters. Esses indivíduos foram identificados como híbridos, em que é possível verificar a ocorrência de geração F1, F2 e retrocruzamentos, indicando a fertilidade dos mesmos. A consequência da existência de híbridos férteis para o processo evolutivo das espécies envolvidas podem variar de insignificantes a drásticas, sendo necessários estudos que gerem informações empíricas, visando auxiliar na elaboração de estratégias de manejo, conservação e proteção dessas espécies.
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Vidal, Leandro Vieira, and 92-99508-7917. "Área de uso, uso do espaço e padrão de atividades de Bradypus tridactylus (Pilosa: bradypodidae) em um fragmento florestal na Amazônia Central." Universidade Federal do Amazonas, 2018. https://tede.ufam.edu.br/handle/tede/6604.

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Submitted by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2018-09-14T13:15:51Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) DISSERTAÇÂO _LEANDRO VIDAL- VERSÃO FINALL.pdf: 2148487 bytes, checksum: 97db0a5fabcaf39c90f18a9e37087c47 (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2018-09-14T13:16:04Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) DISSERTAÇÂO _LEANDRO VIDAL- VERSÃO FINALL.pdf: 2148487 bytes, checksum: 97db0a5fabcaf39c90f18a9e37087c47 (MD5)<br>Made available in DSpace on 2018-09-14T13:16:04Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) DISSERTAÇÂO _LEANDRO VIDAL- VERSÃO FINALL.pdf: 2148487 bytes, checksum: 97db0a5fabcaf39c90f18a9e37087c47 (MD5) Previous issue date: 2018-07-23<br>FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas<br>Studying the lives of animals is important since it assists in obtaining information about ecology, life history, social organization, foraging, food preferences and reproduction, basic and essential elements within the habitat. Equally important, they are research that aims to clarify aspects of the activity pattern, since it allows to understand the interactions between organisms and their respective habitats that is the basis of any conservation activity. The research was carried out in the forest fragment of the Federal University of Amazonas, Central Amazonia, with an area of 776 ha. Our objectives were to estimate the area of use of the Bradypus tridactylus sloths with the help of two data collection techniques and to verify possible behavioral pattern throughout the 24 hour cycle. For comparative measurements, radio telemetry monitoring techniques using VHF transmitters and VHF + GPS logger transmitters were used, the area of use was estimated using two methods, the minimum polygon convex (MPC) as well as Kernel. Areas of Bradypus tridactylus ranged from 1.3ha to 28ha for Kernel and from 1.3ha to 26ha for Minimo convex polygon (MPC) for GPS monitoring. VHF telemetry ranged from 0.59ha to 50.49ha for Kernel and from 0.27 to 10.53ha for MPC. Sloths with smaller body sizes showed larger areas of use and this can be explained by being young animals in search of territories. Sloths used the space in order to return to previously used sites, showing a possible optimal foraging strategy, which may be related to the distribution of plant species used in the diet. For the activity pattern, the most frequent behavior was rest with 81% corroborating with other researches already performed with sloths. Rest mostly occurred at night and dawn while the other behaviors occurred in the morning and afternoon. The behavioral difference between individuals can be explained by individual oscillation or environmental variation. In general, sloths presented a pattern of catemeral activities,since they moved in both day and night, however, behaviors such as wakefulness and self-seeding seem to be influenced by photoperiodic changes.<br>Estudar a área de vida dos animais é importante visto que auxilia na obtenção informações a respeito da ecologia, história de vida, organização social, forrageio, preferências alimentares e reprodução, elementos básicos e essenciais dentro do hábitat. Igualmente importante, são pesquisas que objetivam esclarecer aspectos do padrão de atividades, uma vez que permite compreender as interações entre organismos e os seus respectivos habitats que é a base de qualquer atividade de conservação. A pesquisa foi realizada no fragmento florestal da Universidade Federal do Amazonas, Amazônia Central, com área de 776 ha. Nossos objetivos foram estimar a área de uso das preguiças Bradypus tridactylus com auxílio de duas técnicas de coleta de dados e aferir possível padrão comportamental ao longo do ciclo de 24 horas. Dez indivíduos foram monitorados para se estimar a área de uso e oito para as estimativas comportamentais. Foram utilizadas técnicas de monitoramento através de rádio telemetria, usando transmissores VHF e transmissores VHF+GPS logger, a área de uso foi estimada através de dois métodos, o mínimo polígono convexo (MPC) bem como Kernel. As áreas de uso de Bradypus tridactylus variaram de 1,3ha a 28ha para Kernel e de 1,3ha a 26ha para mínimo polígono convexo (MPC), para monitoramento via GPS. Já para telemetria VHF variou de 0,59ha a 50,49ha para Kernel e de 0,27 a 10,53ha para MPC. As preguiças com menores tamanhos corporais apresentaram áreas de uso maiores e isso pode ser explicado por serem animais jovens em busca de territórios. As preguiças utilizaram o espaço de modo a retornar a locais previamente utilizados, mostrando possível memória espacial, podendo ter relação com a distribuição de espécies vegetais usadas na dieta. Para o padrão de atividades, o comportamento mais frequente foi repouso com 81%, corroborando com outras pesquisas já realizada com preguiças. Repouso ocorreu majoritariamente a noite e madrugada, enquanto os outros comportamentos ocorreram pela manhã e tarde. A diferença comportamental entre os indivíduos pode ser explicada pela oscilação individual ou variação ambiental. De modo geral, as preguiças apresentaram padrão de atividades catemeral, visto que se deslocaram tanto de dia quanto a noite, no entanto, comportamentos como vigília e auto-catação parecem ter influência das mudanças fotoperiódicas.
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Books on the topic "Bradypus tridactylus"

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Three-Toed Sloths. Bearport Pub Co Inc, 2013.

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Conference papers on the topic "Bradypus tridactylus"

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Renata Rocha Vidal, Vidal, Dias Ana Beatriz Dias, and Morini Adriana Caroprezo Morini. "DESCRIÇÃO MACROSCÓPICA DO FÍGADO DE PREGUIÇA-DE-BENTINHO (BRADYPUS TRIDACTYLUS, LINNAEUS, 1758)." In III Congresso Internacional das Ciências Agrárias. Instituto Internacional Despertando Vocações, 2018. http://dx.doi.org/10.31692/2526-7701.iiicointerpdvagro.2018.00415.

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Ana Beatriz Silva, Dias, Vidal Renata Rocha, and Morini Adriana Caroprezo. "MORFOLOGIA DO INTESTINO DELGADO DA PREGUIÇA-DE-BENTINHO (BRADYPUS TRIDACTYLUS) LINNAEUS, 1758." In III CONGRESSO INTERNACIONAL DAS CIÊNCIAS AGRÁRIAS. INSTITUTO INTERNACIONAL DESPERTANDO VOCAÇÕES, 2018. http://dx.doi.org/10.31692/2526-7701.iiicointerpdvagro.2018.00579.

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