6 results on '"Duarte, José Maurício Barbanti"'
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2. Distribution of the elusive and threatened Brazilian dwarf brocket deer refined by non-invasive genetic sampling and distribution modelling
- Author
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de Oliveira, Márcio Leite, do Couto, Hilton Thadeu Zarate, and Duarte, José Maurício Barbanti
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- 2019
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- View/download PDF
3. Scat detection dogs, DNA and species distribution modelling reveal a diminutive geographical range for the Vulnerable small red brocket deer Mazama bororo.
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Duarte, José Maurício Barbanti, Talarico, Ângela Cristina, Vogliotti, Alexandre, Garcia, José Eduardo, Oliveira, Márcio Leite, Maldonado, Jesús E., and González, Susana
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MAZAMA , *DEER populations , *ENDEMIC animals - Abstract
The small red brocket deer Mazama bororo is endemic to the Brazilian Atlantic Forest, a biome that has been greatly fragmented and altered by human activities. This elusive species is morphologically similar to the red brocket deer Mazama americana and the Brazilian dwarf brocket deer Mazama nana, and genetic typing is necessary for reliable identification. To determine the geographical range of M. bororo more accurately, we conducted non-invasive genetic sampling using scat detection dogs trained to locate deer faeces. We surveyed 46 protected areas located within the species’ potential distribution and collected a total of 555 scat samples in 30 of the protected areas. Using a polymerase chain reaction–restriction fragment length polymorphism approach, we genotyped 497 scat samples (89%) and detected M. bororo in seven localities in three Brazilian states. The results support a range extension of the small red brocket deer to latitudes 23 and 28°S and longitudes 47 and 49°W. We show that the species’ distribution is associated with 37,517 km2 of the Ombrophilous Dense Forest in the Brazilian Atlantic Forest, and this conclusion is supported by species distribution modelling. The small red brocket deer is the largest endemic species in Brazil and may have the smallest geographical distribution of any Neotropical deer species. This species occupies fragmented landscapes and is threatened by human encroachment, poaching, and predation by dogs, and based on our findings we recommend policy intervention for conservation planning of the Ombrophilous Dense Forest. [ABSTRACT FROM AUTHOR]
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- 2017
- Full Text
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4. Cryptosporidium parvum in brown brocket (Mazama gouazoubira) from Brazil: First report of the subtype IIaA16G3R1 in cervids.
- Author
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Teixeira, Weslen Fabricio Pires, De Oliveira, Márcio Leite, de Faria Peres, Pedro Henrique, Nagata, Walter Bertequini, Santana, Bruna Nicoleti, Oliveira, Bruno César Miranda, Duarte, José Maurício Barbanti, Cardoso, Tereza Cristina, Lopes, Welber Daniel Zanetti, and Bresciani, Katia Denise Saraiva
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CRYPTOSPORIDIUM , *CRYPTOSPORIDIUM parvum , *MALACHITE green , *CYTOCHROME b , *FISHER exact test , *CRYPTOSPORIDIOSIS - Abstract
This research had as objective to evaluate the occurrence and to characterize genetically the infections by Cryptosporidium in Mazama gouazoubira. By a non-invasive harvest methodology using trained sniffer dogs to locate fecal samples of cervids, 642 fecal samples were obtained from six Brazilian localities. The cervids species responsible for the excretion of each fecal sample were identified by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), using the mitochondrial cytochrome b target gene (cyst b) and the restriction enzymes Sspl, Afl III and BstN. From this identification, 437 fecal samples of M. gouazoubira were selected for research of Cryptosporidium spp. performed through negative staining with malachite green and polymerase chain reaction (nPCR), with the subunit of 18S rRNA gene, followed by sequencing the amplified products. In the samples that were diagnosed the presence of parasite species with zoonotic potential, genotyping was also performed using nPCR with the subunit of GP60 gene. Statistical analysis consisted of the Fisher exact test to verify the association of the presence of the enteroparasite in relation to the presence of cattle in each locality, and the McNemar tests and Kappa correlation coefficient used to compare the results obtained between the two diagnostic techniques. In the fecal samples of M. gouazoubira the occurrences of Cryptosporidium were diagnosed in 1.6% (7/437) and 1.1% (5/437), respectively, through nPCR and microscopy. Cryptosporidium. parvum was diagnosed in 100% (7/7) of the samples submitted to sequencing (18S gene). The IIaA16G3R1 subtype was diagnosed in five of the C. parvum samples submitted to genotyping (GP60 gene). This is the first world report of C. parvum in M. gouazoubira and subtype IIaA16G3R1 in cervids. Unlabelled Image • This is the first study of Cryptosporidium performed in free-living cervids in Brazil. • This is the first world report of C. parvum in M. gouazoubira. • This is the first report of subtype IIaA16G3R1 in cervids. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
5. Historical distribution patterns, phylogenetics and phylogeographics relations of small red brocket deer, Mazama bororo DUARTE, 1996 (Mammalia: Cervidae)
- Author
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Mantellatto, Aline Meira Bonfim [UNESP], Universidade Estadual Paulista (Unesp), Duarte, José Maurício Barbanti [UNESP], and González, Susana [UNESP]
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Diversidade genética ,Conservação ,Cytochrome b ,DNA from natural history collections ,Conservation ,DNA de coleções de museus ,Genetic diversity ,Mazama americana jucunda ,Citocromo b - Abstract
Submitted by ALINE MEIRA BONFIM MANTELLATTO null (alinemeira22@hotmail.com) on 2016-10-26T12:27:30Z No. of bitstreams: 1 Tese_Aline_Meira_Bonfim_Mantellatto.pdf: 3628073 bytes, checksum: fb09b14fa5d50ef174174cbe54e46f70 (MD5) Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-11-01T15:24:33Z (GMT) No. of bitstreams: 1 mantellato_amb_dr_jabo.pdf: 3628073 bytes, checksum: fb09b14fa5d50ef174174cbe54e46f70 (MD5) Made available in DSpace on 2016-11-01T15:24:33Z (GMT). No. of bitstreams: 1 mantellato_amb_dr_jabo.pdf: 3628073 bytes, checksum: fb09b14fa5d50ef174174cbe54e46f70 (MD5) Previous issue date: 2016-10-03 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Considerada a espécie de cervídeo brasileira mais ameaçada de extinção, Mazama bororo, foi recentemente descrita em 1996. Devido a isso, aspectos básicos de sua biologia ainda são desconhecidos. Dessa maneira, o presente trabalho teve como objetivo utilizar DNA extraído de espécimes recentes e de museus para descrever a sua distribuição histórica, investigar a existência de padrões filogeográficos, avaliar a taxonomia da espécie e os erros de identificação no material analisado pertencente aos acervos científicos de museus. Para tanto, foi realizada a extração de DNA de 200 amostras de ossos turbinais obtidos em museus de história natural e 78 destes espécimes foram identificados a partir de iniciadores do gene citocromo b (224bp). O total de 22 espécimes identificados como pertencentes à espécie Mazama bororo permitiu conhecer áreas inéditas da distribuição histórica e, possivelmente atuais, da espécie, como os estados de Rio Grande do Sul, Minas Gerais, Goiás, Espírito Santo e Bahia. Além disso, a comparação entre o DNA dos holótipos de Mazama bororo e de Mazama americana jucunda indica que a espécie M. bororo corresponde à subespécie M. americana jucunda, descrita em 1913, demonstrando a necessidade de elevar essa subespécie à categoria de espécie. Análises filogeográficas da espécie demonstram que M. bororo não apresenta uma estruturação populacional histórica e que diversidade genética é baixa quando comparada a outras espécies, um indicativo de que políticas de manutenção e conservação dessa espécie são essenciais a sua permanência. Comparando-se as identificações morfológicas presentes nos museus com as identificações obtidas a partir do marcador molecular utilizado observa-se que a taxa de erro decorrente da classificação baseada em caracteres morfológicos foi de 26%. Entretanto, espera-se que, com o auxílio do DNA de coleções científicas, a seleção de caracteres morfológicos não convergentes para este grupo seja possível, permitindo assim a realização de identificações morfológicas corretamente. Mazama bororo was recently described in 1996 and is considered the most threatened species of Brazilian deer. Due to this, basic aspects of its biology are still unknown. Thus, this research project aims to use DNA extracted from recent specimens and from natural history collections to review the taxonomy, to describe historical distribution and to investigate the existence of phylogeographic patterns on M. bororo. For this purpose, we extracted DNA from 200 samples of turbinate bones obtained from natural history collections and 78 of these were identified from cytochrome b initiator (224bp). We obtained a total of 22 specimens identified as M. bororo. This result allowed identify unpublished areas on historical and perhaps current distribution of M. bororo in states such as Rio Grande do Sul, Minas Gerais, Goiás, Espírito Santo and Bahia. Moreover, the comparison among the DNA from holotype of M. bororo and Mazama americana jucunda indicates that M. bororo corresponds to the subspecies M. americana jucunda, described in 1913, highlighting the need to raise this subspecies to full species status. Our results also demonstrates that M. bororo did not show a genetic structuration of their populations and that their genetic diversity is lower than other species, highlighting the need to increase conservation and environment policy efforts to maintenance of this species. Finally, when we compare the morphological identification available on natural history collections with the identification obtained from molecular markers we found that the error rate resulting from the classification based on morphological characters was 26%. Nevertheless, we expect with the help of DNA from natural history collections will be possible to select non-convergent morphological characters for this group, allowing thus correct morphological identifications. FAPESP: 2013/05944-7
- Published
- 2016
6. Variantes moleculares de Mazama americana (MAMMALIA, CERVIDAE) no estado de Rondônia
- Author
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Gualberto, André Ferrari [UNESP], Universidade Estadual Paulista (Unesp), and Duarte, José Maurício Barbanti [UNESP]
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Filogenia ,PCR ,Red brocket deer ,Genes mitocondriais ,Mazama americana ,Cytochrome b ,Convergência evolutiva ,Mitochondrial genes ,Reação em cadeia de polimerase ,Rondonia ,Convergent evolution ,Phylogeny ,Citocromo b - Abstract
Made available in DSpace on 2014-06-11T19:26:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-10-07Bitstream added on 2014-06-13T19:53:59Z : No. of bitstreams: 1 gualberto_af_me_jabo.pdf: 464930 bytes, checksum: 799ea2a9f048c84fac80100f93c28e4f (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O veado-mateiro (Mazama americana) é a maior espécie do Gênero Mazama, e encontra distribuído geograficamente por quase toda a região neotropical. Animais originários do Estado de Rondônia têm apresentado importantes diferenças citogenéticas em relação ao padrão de outras populações, o que suscita necessidade de estudos mais aprofundados para definição da sua posição filogenética. O presente estudo objetivou identificar as diferentes populações de veado-mateiro desta região, verificando a existência de mais de uma espécie no local. Para tanto, foram obtidos 51 fragmentos de tecido de animais caçados por indígenas e pela população local em todas as regiões do Estado dos quais 33 tiveram seu DNA extraídos, amplificados (região de 480pb do citocromo b) e seqüenciados de forma satisfatória. Estas seqüências foram alinhadas e comparadas, gerando 21 haplótipos que se encontram distribuídos de forma aleatória pelas diversas regiões de coleta. Estes haplótipos serviram de base para a elaboração de redes de distância e árvores filogenéticas que quando analisadas sugeriram a existência de espécies crípticas dentro do que hoje se denomina Mazama americana no Estado de Rondônia. The red brocket deer is the largest species of Mazama genus and it is distributed in almost all Neotropical regions. Individuals originated from Rondônia state in Brazil have been presented important cytogenetic differences when compared with populations of other regions of country; however more studies are necessary to define correct phylogenetic position of species. The objective of present study was performed the identification of different populations of red brocket deer from Rondônia state by verification of occurrence of more than one species on mentioned region. For this, 51 fragments of tissues from hunted animals were obtained with Indians and local people of all regions of Rondônia state. In 31 fragments of tissues the DNA was successful extract, amplified (480 bp region of cytochrome b) and sequenced. These sequences were aligned and compared creating 21 haplotypes, which are distributed in a randomly way thru the different regions of sampling. The haplotypes were used to elaborate distance nets and phylogenetic trees, which when analyzed suggested the existence of cryptic species on Mazama americana species that occurs in Rondônia state.
- Published
- 2008
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