57 resultados para Zoos


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While hemoplasma infections in domestic cats are well studied, almost no information is available on their occurrence in wild felids. The aims of the present study were to investigate wild felid species as possible reservoirs of feline hemoplasmas and the molecular characterization of the hemoplasma isolates. Blood samples from the following 257 wild felids were analyzed: 35 Iberian lynxes from Spain, 36 Eurasian lynxes from Switzerland, 31 European wildcats from France, 45 lions from Tanzania, and 110 Brazilian wild felids, including 12 wild felid species kept in zoos and one free-ranging ocelot. Using real-time PCR, feline hemoplasmas were detected in samples of the following species: Iberian lynx, Eurasian lynx, European wildcat, lion, puma, oncilla, Geoffroy's cat, margay, and ocelot. "Candidatus Mycoplasma haemominutum" was the most common feline hemoplasma in Iberian lynxes, Eurasian lynxes, Serengeti lions, and Brazilian wild felids, whereas "Candidatus Mycoplasma turicensis" was the most prevalent in European wildcats; hemoplasma coinfections were frequently observed. Hemoplasma infection was associated with species and free-ranging status of the felids in all animals and with feline leukemia virus provirus-positive status in European wildcats. Phylogenetic analyses of the 16S rRNA and the partial RNase P gene revealed that most hemoplasma isolates exhibit high sequence identities to domestic cat-derived isolates, although some isolates form different subclusters within the phylogenetic tree. In conclusion, 9 out of 15 wild felid species from three different continents were found to be infected with feline hemoplasmas. The effect of feline hemoplasma infections on wild felid populations needs to be further investigated.

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Francisella tularensis, a small Gram-negative facultative intracellular bacterium, is the causative agent of tularaemia, a severe zoonotic disease transmitted to humans mostly by vectors such as ticks, flies and mosquitoes. The disease is endemic in many parts of the northern hemisphere. Among animals, the most affected species belong to rodents and lagomorphs, in particular hares. However, in the recent years, many cases of tularaemia among small monkeys in zoos were reported. We have developed a real-time PCR that allows to quantify F. tularensis in tissue samples. Using this method, we identified the spleen and the kidney as the most heavily infected organ containing up to 400 F. tularensis bacteria per simian host cell in two common squirrel monkeys (Saimiri sciureus) from a zoo that died of tularaemia. In other organs such as the brain, F. tularensis was detected at much lower titres. The strain that caused the infection was identified as F. tularensis subsp. holarctica biovar I, which is susceptible to erythromycin. The high number of F. tularensis present in soft organs such as spleen, liver and kidney represents a high risk for persons handling such carcasses and explains the transmission of the disease to a pathologist during post-mortem analysis. Herein, we show that real-time PCR allows a reliable and rapid diagnosis of F. tularensis directly from tissue samples of infected animals, which is crucial in order to attempt accurate prophylactic measures, especially in cases where humans or other animals have been exposed to this highly contagious pathogen.

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Parasites are of major clinical significance in captive primates in zoos, particularly those with direct life cycles. Oxyurid nematodes can be a persistent problem, as infection intensity and environmental contamination with infective eggs are usually high. Observations at the Basel Zoo in Switzerland have revealed that particularly black-handed spider monkeys (Ateles geoffroyi) exhibit continuous oxyurid nematode infection(s), despite regular deworming with anthelmintics. In the present study, using a molecular approach, we were able to identify the nematode (Trypanoxyuris atelis) causing this ongoing problem, and we are now evaluating a practical treatment and control regimen to tackle this parasite problem.

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A Educação para a Conservação é um campo de pesquisa que se dedica ao estudo das reflexões éticas e das atitudes humanas direcionadas para com o respeito que se deve ter com o ambiente, principalmente pelo estabelecimento de ações conservacionistas pautadas em interações educativas. Os Zoos, de modo geral, estão inseridos nessa perspectiva, uma vez que se apresentam como instituições de cunho educativo voltadas para a conservação da biodiversidade. No entanto, o discurso expositivo apresentado por esses aparatos culturais no Brasil, muitas vezes, não contempla tais elementos em suas exposições. Por este motivo, buscou-se a análise de exposições zoológicas também no exterior, que contemplassem discursos sobre a conservação da biodiversidade em suas exposições, tendo sido escolhida a exposição do Zoo de Barcelona, Espanha, para a realização desta investigação. A pesquisa teve por objetivos compreender como a conservação da biodiversidade é abordada na exposição deste zoológico catalão, com base na formulação de saberes de referência constituídos a partir de diferentes áreas: os Movimentos Ambientalistas, a Filosofia da Conservação e as Éticas Ambientais. Igualmente, buscou-se compreender como o discurso expositivo sobre conservação encontra-se apresentado nos aparatos expográficos distribuídos ao longo da exposição, bem como em livros e documentos. Compreendendo a investigação como um Estudo de Caso, foram acessados documentos institucionais de acesso público encontrados no site da instituição e textos presentes nos painéis expositivos. As análises foram realizadas com base no referencial teórico da Transposição Didática/Museográfica, que permite o estudo da exposição por ao menos três lógicas: a lógica do discurso; a lógica do espaço; e a lógica do gesto. Além disso, o mesmo referencial prevê o estabelecimento de um saber de referência ou saber sábio pautado no conhecimento epistemológico sobre a conservação da biodiversidade e, nesta pesquisa, no discurso de pesquisadores da área, que foram entrevistados sobre este assunto. Este saber de referência ou saber sábio possibilitou a criação de um conjunto de categorias de análise que pautou a análise do discurso expositivo apresentado pelo Zoo de Barcelona. As categorias criadas foram classificadas em duas dimensões: a dos Valores e a das Ações. Duas categorias, a Antropocêntrica e a Não antropocêntrica constituíram a Dimensão dos Valores e quatro categorias, a Desenvolvimentista, a Sustentabilista, a Sócio-humanística e a Técnico-científica constituíram a Dimensão das Ações. Os resultados apontaram que o discurso expositivo é composto predominantemente por informações Técnico-científicas e Sustentabilistas, ambas as categorias contextualizadas por uma visão não antropocêntrica de valorização da natureza. A forma como o discurso expositivo encontra-se apresentado na parte textual da exposição corrobora a linha conceitual de assuntos abordados nos grandes eventos globais promovidos pela ONU ao longo dos últimos 40 anos, sobre a conservação do meio ambiente. Categorias como a Sócio-humanística, a Antropocêntrica e a Dimensão dos Valores foram pouco abordadas. A categoria Desenvolvimentista não foi encontrada na exposição. Pelas evidências levantadas durante a análise dos dados pode-se concluir que o Zoo de Barcelona apresenta um discurso expositivo conservacionista e que há elementos suficientes na exposição para se apontar o desenvolvimento de uma Educação para a Conservação.

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Subtitle varies slightly.

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image: Miniature Bird House

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Thesis (Master's)--University of Washington, 2016-06

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Veterinarians are increasingly faced with examining and/or treating marine mammals during strandings or following requests from theme parks and zoos. A common request involving seals and sea lions regards dentition, either to age a wild animal or as part of the routine health of captive animals. The major problem with examining dentition is the lack of information available in the literature on normal dentition, particularly in juveniles, where eruption patterns may be used to age the animal. The information presented in this report details typical deciduous dentition in one Californian sea lion, a species commonly encountered in captivity.

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Chimpanzees are native only to the jungles of equatorial Africa, but for the last hundred years, they have also lived in captivity in the United States, most commonly in biomedical research laboratories, but also at Air Force bases for experiments for the space program, at accredited and unaccredited zoos, at circuses, as performers in Hollywood and even in private homes and backyards as pets. But that has been gradually evolving over the last few decades, as more and more chimpanzees move to newly-established chimpanzee sanctuaries. That transition was already underway even before the announcement by the National Institutes of Health (NIH) last year that it will retire all of its remaining chimpanzees from labs to sanctuaries. By thoroughly examining the evolution of these sanctuaries leading up to that seminal decision, along with the many challenges they face, including money, medical care, conflicting philosophies on the treatment of animals and the pitfalls that have led other sanctuaries to the brink of ruin, we can take away a better understanding of why chimpanzee sanctuaries are needed and why caretakers of other animal species are now looking to the chimpanzee sanctuary movement as a model to show how animals can be cared for in retirement.

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Descripción del proceso creativo del visitante adulto de tipo gran público y de los principios que guían la creatividad del conservador en el momento en que concibe una exposición temporal temática.

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BACKGROUND Elephants are classified as critically endangered animals by the International Union for Conservation of Species (IUCN). Elephant endotheliotropic herpesvirus (EEHV) poses a large threat to breeding programs of captive Asian elephants by causing fatal haemorrhagic disease. EEHV infection is detected by PCR in samples from both clinically ill and asymptomatic elephants with an active infection, whereas latent carriers can be distinguished exclusively via serological assays. To date, identification of latent carriers has been challenging, since there are no serological assays capable of detecting seropositive elephants. RESULTS Here we describe a novel ELISA that specifically detects EEHV antibodies circulating in Asian elephant plasma/serum. Approximately 80 % of PCR positive elephants display EEHV-specific antibodies. Monitoring three Asian elephant herds from European zoos revealed that the serostatus of elephants within a herd varied from non-detectable to high titers. The antibody titers showed typical herpes-like rise-and-fall patterns in time which occur in all seropositive animals in the herd more or less simultaneously. CONCLUSIONS This study shows that the developed ELISA is suitable to detect antibodies specific to EEHV. It allows study of EEHV seroprevalence in Asian elephants. Results confirm that EEHV prevalence among Asian elephants (whether captive-born or wild-caught) is high.