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Pesquisa : B01.050.150.900.649.313.500.380.120 [Categoria DeCS]
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[PMID]:29293647
[Au] Autor:Hofman-Kaminska E; Bocherens H; Borowik T; Drucker DG; Kowalczyk R
[Ad] Endereço:Mammal Research Institute, Polish Academy of Sciences, Bialowieza, Poland.
[Ti] Título:Stable isotope signatures of large herbivore foraging habitats across Europe.
[So] Source:PLoS One;13(1):e0190723, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We investigated how do environmental and climatic factors, but also management, affect the carbon (δ13C) and nitrogen (δ15N) stable isotope composition in bone collagen of the two largest contemporary herbivores: European bison (Bison bonasus) and moose (Alces alces) across Europe. We also analysed how different scenarios of population recovery- reintroduction in bison and natural recovery in moose influenced feeding habitats and diet of these two species and compared isotopic signatures of modern populations of bison and moose (living in human-altered landscapes) with those occurring in early Holocene. We found that δ13C of modern bison and moose decreased with increasing forest cover. Decreasing forest cover, increasing mean annual temperature and feeding on farm crops caused an increase in δ15N in bison, while no factor significantly affected δ15N in moose. We showed significant differences in δ13C and δ15N among modern bison populations, in contrast to moose populations. Variation in both isotopes in bison resulted from inter-population differences, while in moose it was mainly an effect of intra-population variation. Almost all modern bison populations differed in δ13C and δ15N from early Holocene bison. Such differences were not observed in moose. It indicates refugee status of European bison. Our results yielded evidence that habitat structure, management and a different history of population recovery have a strong influence on foraging behaviour of large herbivores reflected in stable isotope signatures. Influence of forest structure on carbon isotope signatures of studied herbivores supports the "canopy effect" hypothesis.
[Mh] Termos MeSH primário: Bison/fisiologia
Isótopos de Carbono/análise
Cervos/fisiologia
Ecossistema
Comportamento Alimentar
Herbivoria
Isótopos de Nitrogênio/análise
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Carbon Isotopes); 0 (Nitrogen Isotopes)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190723


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[PMID]:28705156
[Au] Autor:Berini JL; Badgley C
[Ad] Endereço:Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, 135 B Skok Hall, 2003 Upper Buford Circle, St. Paul, MN, 55108-1052, USA. beri0015@umn.edu.
[Ti] Título:Diet segregation in American bison (Bison bison) of Yellowstone National Park (Wyoming, USA).
[So] Source:BMC Ecol;17(1):27, 2017 Jul 14.
[Is] ISSN:1472-6785
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Body size is a major factor in the nutritional ecology of ruminant mammals. Females, due to their smaller size and smaller rumen, have more rapid food-passage times than males and thereby require higher quality forage. Males are more efficient at converting high-fiber forage into usable energy and thus, are more concerned with quantity. American bison are sexually dimorphic and sexually segregate for the majority of their adult lives, and in Yellowstone National Park, they occur in two distinct subpopulations within the Northern and Central ranges. We used fecal nitrogen and stable isotopes of carbon and nitrogen from American bison to investigate sex-specific differences in diet composition, diet quality, and dietary breadth between the mating season and a time period spanning multiple years, and compared diet indicators for these different time periods between the Northern and Central ranges. RESULTS: During mating season, diet composition of male and female American bison differed significantly; females had higher quality diets, and males had greater dietary breadth. Over the multi-year period, females had higher quality diets and males, greater dietary breadth. Diet segregation for bison in the Central Range was more pronounced during the mating season than for the multi-year period and females had higher quality diets than males. Finally, diet segregation in the Northern Range was more pronounced during the multi-year period than during the mating season, and males had greater dietary breadth. CONCLUSIONS: Female bison in Yellowstone National Park have higher quality diets than males, whereas males ingest a greater diversity of plants or plants parts, and bison from different ranges exhibited more pronounced diet segregation during different times. Collectively, our results suggest that diet segregation in bison of Yellowstone National Park is associated with sex-specific differences in nutritional demands. Altogether, our results highlight the importance of accounting for spatial and temporal heterogeneity when conducting dietary studies on wild ungulates.
[Mh] Termos MeSH primário: Bison/fisiologia
[Mh] Termos MeSH secundário: Ração Animal/análise
Animais
Fezes/química
Comportamento Alimentar
Feminino
Masculino
Parques Recreativos
Estações do Ano
Wyoming
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170715
[St] Status:MEDLINE
[do] DOI:10.1186/s12898-017-0137-9


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[PMID]:28609437
[Au] Autor:Brennan A; Cross PC; Portacci K; Scurlock BM; Edwards WH
[Ad] Endereço:Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, United States of America.
[Ti] Título:Shifting brucellosis risk in livestock coincides with spreading seroprevalence in elk.
[So] Source:PLoS One;12(6):e0178780, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Tracking and preventing the spillover of disease from wildlife to livestock can be difficult when rare outbreaks occur across large landscapes. In these cases, broad scale ecological studies could help identify risk factors and patterns of risk to inform management and reduce incidence of disease. Between 2002 and 2014, 21 livestock herds in the Greater Yellowstone Area (GYA) were affected by brucellosis, a bacterial disease caused by Brucella abortus, while no affected herds were detected between 1990 and 2001. Using a Bayesian analysis, we examined several ecological covariates that may be associated with affected livestock herds across the region. We showed that livestock risk has been increasing over time and expanding outward from the historical nexus of brucellosis in wild elk on Wyoming's feeding grounds where elk are supplementally fed during the winter. Although elk were the presumed source of cattle infections, occurrences of affected livestock herds were only weakly associated with the density of seropositive elk across the GYA. However, the shift in livestock risk did coincide with recent increases in brucellosis seroprevalence in unfed elk populations. As increasing brucellosis in unfed elk likely stemmed from high levels of the disease in fed elk, disease-related costs of feeding elk have probably been incurred across the entire GYA, rather than solely around the feeding grounds. Our results suggest that focused disease mitigation in areas where seroprevalence in unfed elk is high could reduce the spillover of brucellosis to livestock. We also highlight the need to better understand the epidemiology of spillover events with detailed histories of disease testing, calving, and movement of infected livestock. Finally, we recommend using case-control studies to investigate local factors important to livestock risk.
[Mh] Termos MeSH primário: Animais Selvagens/microbiologia
Brucella abortus/fisiologia
Brucelose/microbiologia
Cervos/microbiologia
Gado/microbiologia
[Mh] Termos MeSH secundário: Animais
Teorema de Bayes
Bison
Brucelose/epidemiologia
Bovinos
Surtos de Doenças/veterinária
Geografia
Interações Hospedeiro-Patógeno
Idaho/epidemiologia
Incidência
Modelos Teóricos
Montana/epidemiologia
Fatores de Risco
Estudos Soroepidemiológicos
Wyoming/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171002
[Lr] Data última revisão:
171002
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170614
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0178780


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[PMID]:28585897
[Au] Autor:Pyziel AM; Laskowski Z; Demiaszkiewicz AW; Höglund J
[Ad] Endereço:W. Stefanski Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland.
[Ti] Título:Interrelationships of Dictyocaulus spp. in Wild Ruminants with Morphological Description of Dictyocaulus cervi n. sp. (Nematoda: Trichostrongyloidea) from Red Deer, Cervus elaphus.
[So] Source:J Parasitol;103(5):506-518, 2017 Oct.
[Is] ISSN:1937-2345
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Lungworms from the genus Dictyocaulus cause parasitic bronchitis (dictyocaulosis) characterized by coughing and severe lung pathology in both domestic and wild ruminants. In this study we investigated the interrelationships of Dictyocaulus spp. from European bison (Bison bonasus L.), roe deer (Capreolus capreolus), and red deer (Cervus elaphus) by nucleotide sequence analysis spanning the 18S RNA gene (small subunit [SSU]) and internal transcribed spacer 2 (ITS2) regions of the ribosomal gene array as well as the mitochondrial cytochrome c oxidase subunit 1 (cox1). Molecular analyses of sequence data obtained partly with novel primers from between 10 and 50 specimens from each host were carried out. Bayesian inference analysis revealed that each host species was infected with different genotypes. Analysis of cox1 sequence data showed a diverse genetic background and high evolutionary potential of Dictyocaulus taxa. Data from lungworms of European bison revealed a distinct genotype of Dictyocaulus viviparus, whereas Dictyocaulus capreolus was only found in roe deer. In contrast, red deer were infected with a taxon with unique SSU, ITS2, and cox1 sequences. These results indicate the occurrence of a novel genotype from red deer, which differs significantly from the National Center for Biotechnology Information reference sequence of Dictyocaulus eckerti. The molecular evidence was consistent with a morphological study with description and imaging of Dictyocaulus cervi n. sp. recovered from red deer. Dictyocaulus cervi n. sp. can be distinguished from D. eckerti on the basis of the absence of cervical papillae, the occurrence of a single ring of 4 symmetrical submedian cephalic papillae, length of the tail in females, morphometry of the female reproductive system, and measurements of gubernacula in males. In conclusion, our findings further strengthen the idea that the genetic complexity and diversity among Dictyocaulus lungworms infecting wildlife ruminants is larger than previously believed and warrants further investigation.
[Mh] Termos MeSH primário: Animais Selvagens/parasitologia
Cervos/parasitologia
Infecções por Dictyocaulus/parasitologia
Dictyocaulus/fisiologia
Ruminantes/parasitologia
[Mh] Termos MeSH secundário: Animais
Teorema de Bayes
Bison/parasitologia
Brônquios/parasitologia
Bronquíolos/parasitologia
DNA de Helmintos/química
DNA de Helmintos/isolamento & purificação
DNA Espaçador Ribossômico/química
Dictyocaulus/anatomia & histologia
Dictyocaulus/classificação
Dictyocaulus/genética
Infecções por Dictyocaulus/epidemiologia
Complexo IV da Cadeia de Transporte de Elétrons/genética
Feminino
Masculino
Filogenia
Polônia/epidemiologia
Prevalência
RNA Ribossômico 18S/genética
Traqueia/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Helminth); 0 (DNA, Ribosomal Spacer); 0 (RNA, Ribosomal, 18S); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171025
[Lr] Data última revisão:
171025
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170607
[St] Status:MEDLINE
[do] DOI:10.1645/16-75


  5 / 623 MEDLINE  
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[PMID]:28570908
[Au] Autor:Tabecka-Lonczynska A; Mytych J; Solek P; Kulpa M; Koziorowski M
[Ad] Endereço:Institute of Biotechnology, University of Rzeszow, Werynia 502, 36-100 Kolbuszowa, Poland; Centre of Biotechnology, University of Rzeszow, Werynia 502, 36-100 Kolbuszowa, Poland. Electronic address: annaurz@wp.pl.
[Ti] Título:New insight on the role of melatonin receptors in reproductive processes of seasonal breeders on the example of mature male European bison (Bison bonasus, Linnaeus 1758).
[So] Source:J Photochem Photobiol B;173:84-91, 2017 Aug.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Melatonin receptors (MT1 and MT2) were shown to regulate proper functioning of reproductive system, especially in seasonally breeding animals. European bison is a unique endangered seasonal breeder and knowledge of the molecular mechanisms of its reproduction is crucial for the survival of the species. The aim of this study was to assess gene expression, protein synthesis and immunohistochemical localization of MT1 and MT2 receptors in testicular and spermatic cord vessels tissues collected in pre-rut (June) and post-rut (December) seasons from adult male European bisons in Bialowieza National Park. We confirmed the highest expression of MT1 and MT2 mRNA and protein levels in testis in December, while in spermatic cord gene expression was also highest in December, but protein amounts were comparable in both analyzed periods. Furthermore, immunohistochemical staining revealed the same amount of both receptors in arteries and veins of spermatic cord in both periods and increased amounts in December in Leydig, Sertoli and germ cells. The high level of testicular melatonin in December confirms the inhibition of spermatogenesis and increased anti-oxidant and anti-inflammatory protection. In spermatic cord vessels, it may prevent from age-related changes due to the overexploitation and ensure a constant temperature regardless of changing environmental conditions. This knowledge can contribute to finding a solution of problems associated with male infertility in general and also further explore the mechanisms regulating the proper functions of the male reproductive system.
[Mh] Termos MeSH primário: Receptor MT1 de Melatonina/metabolismo
Receptor MT2 de Melatonina/metabolismo
[Mh] Termos MeSH secundário: Animais
Bison/crescimento & desenvolvimento
Bison/metabolismo
Expressão Gênica
Imuno-Histoquímica
Masculino
RNA Mensageiro/metabolismo
Receptor MT1 de Melatonina/genética
Receptor MT2 de Melatonina/genética
Estações do Ano
Cordão Espermático/metabolismo
Testículo/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Messenger); 0 (Receptor, Melatonin, MT1); 0 (Receptor, Melatonin, MT2)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171006
[Lr] Data última revisão:
171006
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170602
[St] Status:MEDLINE


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[PMID]:28366202
[Au] Autor:Rodríguez-Hidalgo A; Saladié P; Ollé A; Arsuaga JL; Bermúdez de Castro JM; Carbonell E
[Ad] Endereço:Department of Prehistory, Complutense University, Prof. Aranguren s/n, 28040 Madrid, Spain; Institute of Evolution in Africa (IDEA), Madrid, Spain; Institut Català de Paleoecologia Humana i Evolució Social (IPHES), Tarragona, Spain. Electronic address: ajrh78@gmail.com.
[Ti] Título:Human predatory behavior and the social implications of communal hunting based on evidence from the TD10.2 bison bone bed at Gran Dolina (Atapuerca, Spain).
[So] Source:J Hum Evol;105:89-122, 2017 Apr.
[Is] ISSN:1095-8606
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Zooarcheological research is an important tool in reconstructing subsistence, as well as for inferring relevant aspects regarding social behavior in the past. The organization of hunting parties, forms of predation (number and rate of animals slaughtered), and the technology used (tactics and tools) must be taken into account in the identification and classification of hunting methods in prehistory. The archeological recognition of communal hunting reflects an interest in evolutionary terms and their inherent implications for anticipatory capacities, social complexity, and the development of cognitive tools, such as articulated language. Late and Middle Paleolithic faunal assemblages in Europe have produced convincing evidence of communal hunting of large ungulates allowing for the formation of hypotheses concerning the skills of Neanderthals anatomically modern humans as social predators. However, the emergence of this cooperative behavior is not currently understood. Here, faunal analysis, based on traditional/long-established zooarcheological methods, of nearly 25,000 faunal remains from the "bison bone bed" layer of the TD10.2 sub-unit at Gran Dolina, Atapuerca (Spain) is presented. In addition, other datasets related to the archeo-stratigraphy, paleo-landscape, paleo-environmental proxies, lithic assemblage, and ethno-archeological information of communal hunting have been considered in order to adopt a holistic approach to an investigation of the subsistence strategies developed during deposition of the archeological remains. The results indicate a monospecific assemblage heavily dominated by axial bison elements. The abundance of anthropogenic modifications and the anatomical profile are in concordance with early primary access to carcasses and the development of systematic butchering focused on the exploitation of meat and fat for transportation of high-yield elements to somewhere out of the cave. Together with a catastrophic and seasonal mortality pattern, the results indicate the procurement of bison by communal hunting as early as circa 400 kyr. This suggests that the cognitive, social, and technological capabilities required for successful communal hunting were at least fully developed among the pre-Neanderthal paleodeme of Atapuerca during the Lower Paleolithic. Similarly, the early existence of mass communal hunting as a predation technique informs our understanding of the early emergence of predatory skills similar to those exhibited by modern communal hunters. RESUMEN: La zooarqueología es una importante herramienta para la reconstrucción de la subsistencia y también para inferir aspectos relevantes del comportamiento social en el pasado. En este trabajo presentamos el análisis faunístico del llamado "lecho de huesos de bisonte", contenido en la subunidad TD10.2 del yacimiento Gran Dolina (Atapuerca, España). La composición taxonómica y perfil anatómico indican un conjunto monoespecífico fuertemente dominado por elementos del esqueleto axial de bisonte (Bison sp.). Las características y abundancia de las modificaciones antrópicas revelan un acceso primario e inmediato a las carcasas, así como el desarrollo de un procesado carnicero sistemático dirigido a la explotación de la carne y grasa, y a la preparación para el transporte de elementos de alto rendimiento hacia algún lugar fuera de la cavidad. Esas características unidas a un perfil de mortalidad catastrófico y estacional, sugieren la obtención de los bisontes mediante caza comunal. La frecuencia, localización e intensidad de las mordeduras de carnívoro en los restos indica un fuerte saqueo de las carcasas de bisonte una vez abandonadas éstas por los homininos en el yacimiento. La suma de decisiones antrópicas sobre el transporte y el posterior saqueo por carnívoros de los despojos abandonados resulta en un conjunto interpretado como lugar de matanza y procesamiento carnicero de bisontes carroñeados posteriormente por las fieras. Las analogías etnográficas, etnohistóricas y arqueológicas nos han permitido interpretar el "lecho de huesos de bisonte" como cazadero utilizado durante varios eventos estacionales de caza comunal en los que rebaños completos de bisontes fueron sacrificados para ser explotados intensamente por los homininos que ocuparon la cueva. El repetido uso estacional de un punto en el territorio para el desarrollo de tareas específicas muestra ciertas similitudes con el patrón logístico de gestión de los recursos. En el mismo sentido, la existencia temprana de la caza comunal como táctica depredatoria nos informa sobre la emergencia de habilidades cognitivas, tecnológicas y sociales similares a aquellas exhibidas por otros cazadores comunales modernos en un momento tan temprano como el Pleistoceno medio.
[Mh] Termos MeSH primário: Osso e Ossos
Comportamento Cooperativo
Hominidae/fisiologia
Comportamento Predatório
[Mh] Termos MeSH secundário: Animais
Bison
Espanha
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170921
[Lr] Data última revisão:
170921
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170404
[St] Status:MEDLINE


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[PMID]:28363057
[Au] Autor:Krishnakumar S; Whiteside DP; Elkin B; Thundathil JC
[Ti] Título:A PRELIMINARY ASSESSMENT OF THE EFFECTS OF REPRODUCTIVE SEASONALITY ON SEMINAL PLASMA CHARACTERISTICS IN NORTH AMERICAN BISON (BISON BISON).
[So] Source:J Zoo Wildl Med;48(1):91-101, 2017 Mar.
[Is] ISSN:1042-7260
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The two subspecies of the North American bison, plains ( Bison bison bison) and wood ( Bison bison athabascae) bison, are seasonal breeders. The objective of this study was to conduct a preliminary investigation into the effects of season on semen. To test the hypothesis that there are seasonal effects on seminal plasma, protein profiles of seminal plasma from plains and wood bison (n = 2 of each subspecies) were compared between breeding and nonbreeding seasons. Using two-dimensional gel electrophoresis of seminal plasma proteins, 54 of 170 spots (plains bison) and 19 of 153 spots (wood bison) had differential expression (≥2-fold; P < 0.01) between seasons. Based on immunoblotting, BSP5 and TIMP-2 (two fertility-associated proteins in cattle) were higher during the breeding vs. nonbreeding season. Furthermore, epididymal sperm incubated with seminal plasma from the nonbreeding season had lower postthaw progressive motility (17.33 ± 7.47 vs. 22.09 ± 6.67%; mean ± SD) and an increased ability to undergo a lysophosphatidylcholine-induced acrosome reaction (77.83 ± 8.47 vs. 52.67 ± 7.76%; mean ± SD) as compared to epididymal sperm incubated with seminal plasma from the breeding season. In a heterologous in vitro fertilization system (using bovine oocytes), cleavage rate was higher for sperm exposed to seminal plasma from the breeding vs. the nonbreeding season (75.35 ± 16.55 vs. 33.63 ± 12.44%; mean ± SD). This study suggested that differential expression of seminal plasma characteristics modulating sperm function is one of the mechanisms by which reproductive seasonality affects sperm function in the North American bison.
[Mh] Termos MeSH primário: Bison/fisiologia
Estações do Ano
Sêmen/química
[Mh] Termos MeSH secundário: Animais
Masculino
Sêmen/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170619
[Lr] Data última revisão:
170619
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170401
[St] Status:MEDLINE
[do] DOI:10.1638/2016-0041.1


  8 / 623 MEDLINE  
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[PMID]:28237324
[Au] Autor:Cervantes MP; Palomino JM; Anzar M; Mapletoft RJ; Mastromonaco GF; Adams GP
[Ad] Endereço:Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Canada.
[Ti] Título:In vitro-production of embryos using immature oocytes collected transvaginally from superstimulated wood bison (Bison bison athabascae).
[So] Source:Theriogenology;92:103-110, 2017 Apr 01.
[Is] ISSN:1879-3231
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Two experiments were done to test the hypothesis that morphologic characteristics of wood bison cumulus-oocyte complexes (COC) are reflective of the ability of the oocyte to develop to an advanced embryonic stage after in vitro maturation, fertilization and culture, and to determine the effect of prolonging the interval from the end of superstimulation treatment to oocyte collection (FSH starvation period). Experiments were done during the anovulatory season. In Experiment 1, ovarian superstimulation was induced in 10 bison with two doses of FSH given at 48 h intervals beginning at the time of follicular wave emergence. COC were collected 3 days (72 h) after the last dose of FSH by follicular aspiration and classified as compact, expanded or denuded. The COC were matured in vitro for 24 h before fertilization in vitro (Day 0). Embryo development was assessed on Days 3, 7 and 8. The blastocyst rate was 7/34, 2/10 and 0/3 in COC classified as compact, expanded and denuded, respectively; however, only compact COC resulted in embryos that reached the expanded blastocyst stage. In Experiment 2, COC were collected at either 3 or 4 days (72 or 96 h) after the last dose of FSH (n = 16 bison/group) to determine the effect of the duration of FSH starvation on oocyte competence. The COC were classified as compact good (>3 layers of cumulus cells), compact regular (1-3 layers of cumulus cells), expanded or denuded, and then matured, fertilized and cultured in vitro. Although follicles were larger (P < 0.05) in the 4-day FSH starvation group, there was no effect of starvation period on the distribution of COC morphology; overall, 112/194 (57.7%) were compact, 29/194 (26.3%) were expanded, 39/194 (20.1%) were denuded, and 14/194 (7.2%) were degenerated (P < 0.05). Similarly, there was no effect of starvation period on embryo development. Compact good COC had the highest cleavage (88%) and blastocyst rates (54%; P < 0.05), followed by compact regular COC at 73% and 25%, respectively. Expanded and denuded COC had low cleavage (40% vs. 59%, respectively) and blastocyst rates (5% vs. 8%, respectively). We conclude that morphologic characteristics of wood bison COC are reflective of the ability of the oocyte to develop into an embryo in vitro. Importantly, oocytes collected from superstimulated bison during the anovulatory season were competent to develop to the blastocyst stage following in vitro maturation, fertilization and culture.
[Mh] Termos MeSH primário: Bison/fisiologia
Técnicas de Cultura Embrionária/veterinária
Fertilização In Vitro/veterinária
Recuperação de Oócitos/veterinária
Oócitos/fisiologia
[Mh] Termos MeSH secundário: Animais
Feminino
Hormônio Foliculoestimulante
Projetos Piloto
Superovulação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9002-68-0 (Follicle Stimulating Hormone)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170227
[St] Status:MEDLINE


  9 / 623 MEDLINE  
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Biondo, Alexander Welker
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[PMID]:28187776
[Au] Autor:Zimpel CK; Brum JS; de Souza Filho AF; Biondo AW; Perotta JH; Dib CC; Bonat M; Neto JS; Brandão PE; Heinemann MB; Guimaraes AM
[Ad] Endereço:Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87-Cidade Universitária, São Paulo, SP, CEP 05508-270, Brazil.
[Ti] Título:Mycobacterium bovis in a European bison (Bison bonasus) raises concerns about tuberculosis in Brazilian captive wildlife populations: a case report.
[So] Source:BMC Res Notes;10(1):91, 2017 Feb 10.
[Is] ISSN:1756-0500
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Tuberculosis caused by Mycobacterium bovis is an important worldwide zoonosis and has been reported to cause clinical disease in several animal species, including captive wildlife. This report describes a case of M. bovis infection in a European bison from a Brazilian zoo and compiles a number of literature reports that raise concern regarding tuberculosis among captive wildlife in Brazil. CASE PRESENTATION: A 13 year-old captive-born male bison (Bison bonasus) from a Brazilian zoo began presenting weight loss, diarrhea and respiratory symptoms, which inevitably led to his death. At the animal's necropsy, inspection of the thoracic and abdominal cavities revealed multiple enlarged lymph nodes, ranging from 4 to 10 cm, and pulmonary nodules containing caseous masses with firm white materials consistent with mineralization. Histopathology findings showed a significant amount of acid-alcohol resistant bacilli compatible with Mycobacterium spp. Specimens from lymph nodes and lungs were cultured on Petragnani and Stonebrink media, and specific PCR assays of the bacterial isolate identified it as M. bovis. CONCLUSION: The European bison reported herein died from a severe form of disseminated tuberculosis caused by M. bovis. A review of the available literature indicates possible widespread occurrence of clinical disease caused by M. bovis or M. tuberculosis affecting multiple animal species in Brazilian wildlife-related institutions. These likely underestimated numbers raise concern regarding the control of the disease in captive animal populations from Brazil.
[Mh] Termos MeSH primário: Animais de Zoológico/microbiologia
Bison/microbiologia
Mycobacterium bovis/patogenicidade
Tuberculose/diagnóstico
[Mh] Termos MeSH secundário: Animais
Brasil
Evolução Fatal
Pulmão/microbiologia
Pulmão/patologia
Linfonodos/microbiologia
Linfonodos/patologia
Masculino
Mycobacterium bovis/isolamento & purificação
Tuberculose/microbiologia
Tuberculose/patologia
Perda de Peso
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170212
[St] Status:MEDLINE
[do] DOI:10.1186/s13104-017-2413-3


  10 / 623 MEDLINE  
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[PMID]:28187706
[Au] Autor:Palacio P; Berthonaud V; Guérin C; Lambourdière J; Maksud F; Philippe M; Plaire D; Stafford T; Marsolier-Kergoat MC; Elalouf JM
[Ad] Endereço:Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France.
[Ti] Título:Genome data on the extinct Bison schoetensacki establish it as a sister species of the extant European bison (Bison bonasus).
[So] Source:BMC Evol Biol;17(1):48, 2017 Feb 10.
[Is] ISSN:1471-2148
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The European bison (Bison bonasus), now found in Europe and the Caucasus, has been proposed to originate either from the extinct steppe/extant American bison lineage or from the extinct Bison schoetensacki lineage. Bison schoetensacki remains are documented in Eurasian Middle Pleistocene sites, but their presence in Upper Pleistocene sites has been questioned. Despite extensive genetic studies carried out on the steppe and European bison, no remains from the fossil record morphologically identified as Bison schoetensacki has been analyzed up to now. RESULTS: In this paper, we analyzed a 36,000-year-old Bison schoetensaki bone sample from the Siréjol cave (France) and a cave hyena coprolite (fossilized feces) found in a nearby cave and containing large amounts of Bovinae DNA. We show that the Bovinae mitochondrial DNA sequences from both samples, including a complete mitochondrial genome sequence, belong to a clade recently reported in the literature. This clade only includes ancient bison specimens without taxonomic identification and displays a sister relationship with the extant European bison. The genetic proximity of Bison schoetensacki with specimens from this clade is corroborated by the analysis of nuclear DNA single nucleotide polymorphisms. CONCLUSIONS: This work provides genetic evidence supporting the continuing presence of Bison schoetensacki up to the Upper Pleistocene. Bison schoetensacki turns out to be a sister species of Bison bonasus, excluding the steppe bison Bison priscus as a direct ancestor of the European bison.
[Mh] Termos MeSH primário: Bison/genética
Fósseis
[Mh] Termos MeSH secundário: Animais
Cavernas
DNA Mitocondrial/genética
Europa (Continente)
França
Genoma Mitocondrial
Filogenia
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170212
[St] Status:MEDLINE
[do] DOI:10.1186/s12862-017-0894-2



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