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Pesquisa : F01.145.113.069.500 [Categoria DeCS]
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[PMID]:29362437
[Au] Autor:Otero XL; De La Peña-Lastra S; Pérez-Alberti A; Ferreira TO; Huerta-Diaz MA
[Ad] Endereço:Departamento de Edafoloxía e Química Agrícola, Campus Vida, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
[Ti] Título:Seabird colonies as important global drivers in the nitrogen and phosphorus cycles.
[So] Source:Nat Commun;9(1):246, 2018 01 23.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Seabirds drastically transform the environmental conditions of the sites where they establish their breeding colonies via soil, sediment, and water eutrophication (hereafter termed ornitheutrophication). Here, we report worldwide amounts of total nitrogen (N) and total phosphorus (P) excreted by seabirds using an inventory of global seabird populations applied to a bioenergetics model. We estimate these fluxes to be 591 Gg N y and 99 Gg P y , respectively, with the Antarctic and Southern coasts receiving the highest N and P inputs. We show that these inputs are of similar magnitude to others considered in global N and P cycles, with concentrations per unit of surface area in seabird colonies among the highest measured on the Earth's surface. Finally, an important fraction of the total excreted N (72.5 Gg y ) and P (21.8 Gg y ) can be readily solubilized, increasing their short-term bioavailability in continental and coastal waters located near the seabird colonies.
[Mh] Termos MeSH primário: Aves/fisiologia
Ecossistema
Nitrogênio/metabolismo
Fósforo/metabolismo
[Mh] Termos MeSH secundário: Migração Animal/fisiologia
Animais
Regiões Antárticas
Aves/classificação
Conservação dos Recursos Naturais
Água Doce
Geografia
Ciclo do Nitrogênio
Oceanos e Mares
Água do Mar
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
27YLU75U4W (Phosphorus); N762921K75 (Nitrogen)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180125
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02446-8


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[PMID]:29311457
[Au] Autor:Kenzaka T; Kataoka K; Fujimitsu T; Tani K
[Ad] Endereço:Environmental Science and Microbiology, Faculty of Pharmacy, Osaka Ohtani University.
[Ti] Título:[Intestinal Microbiota in Migrating Barn Swallows around Osaka].
[So] Source:Yakugaku Zasshi;138(1):117-122, 2018.
[Is] ISSN:1347-5231
[Cp] País de publicação:Japan
[La] Idioma:jpn
[Ab] Resumo:Migratory birds are considered as vectors of infectious diseases, owing to their potential for transmitting pathogens over large distances. The populations of barn swallow (Hirundo rustica) migrate from Southeast Asia to the Japanese mainland during spring and migrate back to Southeast Asia during autumn. This migratory population is estimated to comprise approximately hundreds to thousands of individuals per year. However, to date, not much is known about the gastrointestinal microbiota of the barn swallow. In this study, we characterized the fecal bacterial community in barn swallow. Using 16S rRNA gene metagenomic sequencing analysis, we examined the presence and composition of potentially pathogenic bacteria in the fecal samples, which were collected during spring season from Osaka. The number (±S.D.) of total bacteria was approximately 2.1(±3.4)×10 per gram of feces. In most samples, the bacterial community composition was dominated by families, such as Enterobacteriaceae, Pseudomonadaceae, Mycoplasmataceae, Enterococcaceae, Streptococcaceae, and Alcaligenaceae. However, no relationship was found between the bacterial community composition and geographical area in the fecal samples. Potentially pathogenic bacteria were detected at the rate of >0.1%, which included Pseudomonas spp., Escherichia/Shigella spp., Enterobacter spp., Yersinia spp., Mycoplasma spp., Enterococcus spp., Achromobacter spp., and Serratia spp. Our results suggested that barn swallow is instrumental in the transmission of these genera over large distances.
[Mh] Termos MeSH primário: Migração Animal/fisiologia
Vetores de Doenças
Intestinos/microbiologia
Microbiota
Andorinhas/microbiologia
[Mh] Termos MeSH secundário: Alcaligenaceae/isolamento & purificação
Alcaligenaceae/patogenicidade
Animais
Ásia Sudeste
Enterobacteriaceae/isolamento & purificação
Enterobacteriaceae/patogenicidade
Enterococcaceae/isolamento & purificação
Enterococcaceae/patogenicidade
Fezes/microbiologia
Japão
Mycoplasmataceae/isolamento & purificação
Mycoplasmataceae/patogenicidade
Pseudomonadaceae/isolamento & purificação
Pseudomonadaceae/patogenicidade
Streptococcaceae/isolamento & purificação
Streptococcaceae/patogenicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180110
[St] Status:MEDLINE
[do] DOI:10.1248/yakushi.17-00148


  3 / 4813 MEDLINE  
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[PMID]:28919506
[Au] Autor:Gonçalves DV; Martínez-Freiría F; Crochet PA; Geniez P; Carranza S; Brito JC
[Ad] Endereço:CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Portugal; Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, Portugal; Institute of Evolutionary Biolog
[Ti] Título:The role of climatic cycles and trans-Saharan migration corridors in species diversification: Biogeography of Psammophis schokari group in North Africa.
[So] Source:Mol Phylogenet Evol;118:64-74, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Highlands, hydrographic systems and coastal areas have been hypothesised to form corridors across the hyperarid Sahara desert in North Africa, allowing dispersal and gene flow for non-xeric species. Here we aim to provide a genetic test for the trans-Saharan corridor model, and predict the location and stability of ecological-corridors, by combining phylogeography and palaeoclimatic modelling. The model was the Psammophis schokari (Schokari sand racer) group, fast-moving and widely distributed generalist colubrids occurring mostly in arid and semiarid scrublands. We combined dated phylogenies of mitochondrial and nuclear markers with palaeoclimatic modelling. For the phylogeographic analysis, we used 75 samples of P. schokari and P. aegyptius, and Bayesian and Maximum-Likelihood methods. For the ecological models, we used Maxent over the distribution of P. schokari and West African lineages. Models were projected to past conditions (mid Holocene, Last Glacial Maximum and Last Inter-Glacial) to infer climatic stable areas. Climatic stability was predicted to be mostly restricted to coastal areas and not spatially continuous. A putative temporary trans-Saharan corridor was identified in Eastern Sahara, with a more stable one along the Atlantic coast. Six parapatric lineages were identified within P. schokari, four occurring in North Africa. These likely diverged during the Pliocene. The Tamanraset River might have been a vicariant agent. African lineages may have experienced further subsequent diversification during the late Pleistocene. The main P. schokari refugia were probably located along the northern margins of the Sahara, allowing its North-to-South colonization. Trans-Saharan corridors seem to have played a role in P. schokari biogeography, allowing colonization of central Saharan mountains and Sahel. Some might have worked as refugia, and even the most stable corridors may have sections working as filters, depending on each climatic phase. We expect the use of trans-Saharan corridors to decrease for more mesic species or with less dispersal capabilities.
[Mh] Termos MeSH primário: Serpentes/classificação
[Mh] Termos MeSH secundário: África do Norte
Migração Animal
Animais
Teorema de Bayes
Clima
Citocromos b/química
Citocromos b/genética
DNA Mitocondrial/química
DNA Mitocondrial/isolamento & purificação
DNA Mitocondrial/metabolismo
Variação Genética
Funções Verossimilhança
NADH Desidrogenase/química
NADH Desidrogenase/genética
Filogenia
Filogeografia
Análise de Sequência de DNA
Serpentes/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial); 9035-37-4 (Cytochromes b); EC 1.6.99.3 (NADH Dehydrogenase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170919
[St] Status:MEDLINE


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[PMID]:29346390
[Au] Autor:Lin W; McBroome J; Rehman M; Johnson BR
[Ad] Endereço:Department of Entomology and Nematology, University of California, Davis, CA, United States of America.
[Ti] Título:Africanized bees extend their distribution in California.
[So] Source:PLoS One;13(1):e0190604, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Africanized honey bees (Apis mellifera) arrived in the western hemisphere in the 1950s and quickly spread north reaching California in the 1990s. These bees are highly defensive and somewhat more difficult to manage for commercial purposes than the European honey bees traditionally kept. The arrival of these bees and their potentially replacing European bees over much of the state is thus of great concern. After a 25 year period of little systematic sampling, a recent small scale study found Africanized honey bees in the Bay Area of California, far north of their last recorded distribution. The purpose of the present study was to expand this study by conducting more intensive sampling of bees from across northern California. We found Africanized honey bees as far north as Napa and Sacramento. We also found Africanized bees in all counties south of these counties. Africanized honey bees were particularly abundant in parts of the central valley and Monterey. This work suggests the northern spread of Africanized honey bees may not have stopped. They may still be moving north at a slow rate, although due to the long gaps in sampling it is currently impossible to tell for certain. Future work should routinely monitor the distribution of these bees to distinguish between these two possibilities.
[Mh] Termos MeSH primário: Abelhas
[Mh] Termos MeSH secundário: Migração Animal
Animais
California
Dinâmica Populacional
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[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:180119
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190604


  5 / 4813 MEDLINE  
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[PMID]:29320572
[Au] Autor:McCloskey SE; Uher-Koch BD; Schmutz JA; Fondell TF
[Ad] Endereço:U.S. Geological Survey, Alaska Science Center, Anchorage, Alaska, United States of America.
[Ti] Título:International migration patterns of Red-throated Loons (Gavia stellata) from four breeding populations in Alaska.
[So] Source:PLoS One;13(1):e0189954, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Identifying post-breeding migration and wintering distributions of migratory birds is important for understanding factors that may drive population dynamics. Red-throated Loons (Gavia stellata) are widely distributed across Alaska and currently have varying population trends, including some populations with recent periods of decline. To investigate population differentiation and the location of migration pathways and wintering areas, which may inform population trend patterns, we used satellite transmitters (n = 32) to describe migration patterns of four geographically separate breeding populations of Red-throated Loons in Alaska. On average (± SD) Red-throated Loons underwent long (6,288 ± 1,825 km) fall and spring migrations predominantly along coastlines. The most northern population (Arctic Coastal Plain) migrated westward to East Asia and traveled approximately 2,000 km farther to wintering sites than the three more southerly populations (Seward Peninsula, Yukon-Kuskokwim Delta, and Copper River Delta) which migrated south along the Pacific coast of North America. These migration paths are consistent with the hypothesis that Red-throated Loons from the Arctic Coastal Plain are exposed to contaminants in East Asia. The three more southerly breeding populations demonstrated a chain migration pattern in which the more northerly breeding populations generally wintered in more northerly latitudes. Collectively, the migration paths observed in this study demonstrate that some geographically distinct breeding populations overlap in wintering distribution while others use highly different wintering areas. Red-throated Loon population trends in Alaska may therefore be driven by a wide range of effects throughout the annual cycle.
[Mh] Termos MeSH primário: Migração Animal
Aves/fisiologia
[Mh] Termos MeSH secundário: Alaska
Animais
América do Norte
Dinâmica Populacional
Estações do Ano
Telemetria
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180111
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189954


  6 / 4813 MEDLINE  
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[PMID]:29320518
[Au] Autor:Johnson BM; Kemp BM; Thorgaard GH
[Ad] Endereço:School of Biological Sciences, Washington State University, Pullman, Washington, United States of America.
[Ti] Título:Increased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha.
[So] Source:PLoS One;13(1):e0190059, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Columbia River and its tributaries provide essential spawning and rearing habitat for many salmonid species, including Chinook salmon (Oncorhynchus tshawytscha). Chinook salmon were historically abundant throughout the basin and Native Americans in the region relied heavily on these fish for thousands of years. Following the arrival of Europeans in the 1800s, salmon in the basin experienced broad declines linked to overfishing, water diversion projects, habitat destruction, connectivity reduction, introgression with hatchery-origin fish, and hydropower development. Despite historical abundance, many native salmonids are now at risk of extinction. Research and management related to Chinook salmon is usually explored under what are termed "the four H's": habitat, harvest, hatcheries, and hydropower; here we explore a fifth H, history. Patterns of prehistoric and contemporary mitochondrial DNA variation from Chinook salmon were analyzed to characterize and compare population genetic diversity prior to recent alterations and, thus, elucidate a deeper history for this species. A total of 346 ancient and 366 contemporary samples were processed during this study. Species was determined for 130 of the ancient samples and control region haplotypes of 84 of these were sequenced. Diversity estimates from these 84 ancient Chinook salmon were compared to 379 contemporary samples. Our analysis provides the first direct measure of reduced genetic diversity for Chinook salmon from the ancient to the contemporary period, as measured both in direct loss of mitochondrial haplotypes and reductions in haplotype and nucleotide diversity. However, these losses do not appear equal across the basin, with higher losses of diversity in the mid-Columbia than in the Snake subbasin. The results are unexpected, as the two groups were predicted to share a common history as parts of the larger Columbia River Basin, and instead indicate that Chinook salmon in these subbasins may have divergent demographic histories.
[Mh] Termos MeSH primário: DNA Mitocondrial/análise
Evolução Molecular
Variação Genética
Salmão/genética
[Mh] Termos MeSH secundário: Migração Animal
Animais
Pesqueiros/história
Haplótipos
História do Século XXI
História Antiga
Atividades Humanas
Modelos Genéticos
Oceano Pacífico
Filogenia
Dinâmica Populacional
Centrais Elétricas
Rios
[Pt] Tipo de publicação:COMPARATIVE STUDY; HISTORICAL ARTICLE; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180111
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190059


  7 / 4813 MEDLINE  
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[PMID]:29324772
[Au] Autor:Contina A; Bridge ES; Ross JD; Shipley JR; Kelly JF
[Ad] Endereço:Oklahoma Biological Survey, University of Oklahoma, Norman, OK, United States of America.
[Ti] Título:Examination of Clock and Adcyap1 gene variation in a neotropical migratory passerine.
[So] Source:PLoS One;13(1):e0190859, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Complex behavioral traits, such as those making up a migratory phenotype, are regulated by multiple environmental factors and multiple genes. We investigated possible relationships between microsatellite variation at two candidate genes implicated in the control of migratory behavior, Clock and Adcyap1, and several aspects of migratory life-history and evolutionary divergence in the Painted Bunting (Passerina ciris), a species that shows wide variation in migratory and molting strategies across a disjunct distribution. We focused on Clock and Adcyap1 microsatellite variation across three Painted Bunting populations in Oklahoma, Louisiana, and North Carolina, and for the Oklahoma breeding population we used published migration tracking data on adult males to explore phenotypic variation in individual migratory behavior. We found no correlation between microsatellite allele size within either Clock and Adcyap1 relative to the initiation or duration of fall migration in adult males breeding in Oklahoma. We also show the lack of significant correlations with aspects of the migratory phenotype for the Louisiana population. Our research highlights the limitations of studying microsatellite allelic mutations that are of undetermined functional influence relative to complex behavioral phenotypes.
[Mh] Termos MeSH primário: Proteínas Aviárias/genética
Proteínas CLOCK/genética
Variação Genética
Repetições de Microssatélites
Polipeptídeo Hipofisário Ativador de Adenilato Ciclase/genética
Aves Canoras/genética
[Mh] Termos MeSH secundário: Alelos
Migração Animal
Animais
Evolução Biológica
Estudos de Associação Genética
Louisiana
Masculino
Muda/genética
Mutação
North Carolina
Oklahoma
Fenótipo
Aves Canoras/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Avian Proteins); 0 (Pituitary Adenylate Cyclase-Activating Polypeptide); EC 2.3.1.48 (CLOCK Proteins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180206
[Lr] Data última revisão:
180206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190859


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[PMID]:28469028
[Au] Autor:Nourani E; Yamaguchi NM; Higuchi H
[Ad] Endereço:Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan mahle68@gmail.com.
[Ti] Título:Climate change alters the optimal wind-dependent flight routes of an avian migrant.
[So] Source:Proc Biol Sci;284(1854), 2017 May 17.
[Is] ISSN:1471-2954
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Migratory birds can be adversely affected by climate change as they encounter its geographically uneven impacts in various stages of their life cycle. While a wealth of research is devoted to the impacts of climate change on distribution range and phenology of migratory birds, the indirect effects of climate change on optimal migratory routes and flyways, through changes in air movements, are poorly understood. Here, we predict the influence of climate change on the migratory route of a long-distant migrant using an ensemble of correlative modelling approaches, and present and future atmospheric data obtained from a regional climate model. We show that changes in wind conditions by mid-century will result in a slight shift and reduction in the suitable areas for migration of the study species, the Oriental honey-buzzard, over a critical section of its autumn journey, followed by a complete loss of this section of the traditional route by late century. Our results highlight the need for investigating the consequences of climate change-induced disturbance in wind support for long-distance migratory birds, particularly species that depend on the wind to cross ecological barriers, and those that will be exposed to longer journeys due to future range shifts.
[Mh] Termos MeSH primário: Migração Animal
Mudança Climática
Falconiformes/fisiologia
Vento
[Mh] Termos MeSH secundário: Animais
Voo Animal
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180131
[Lr] Data última revisão:
180131
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE


  9 / 4813 MEDLINE  
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[PMID]:29210239
[Au] Autor:Raby GD; Donaldson MR; Nguyen VM; Taylor; Sopinka NM; Cook KV; Patterson DA; Robichaud D; Hinch SG; Cooke SJ
[Ti] Título:Bycatch mortality of endangered coho salmon: impacts, solutions, and aboriginal perspectives.
[So] Source:Ecol Appl;24(7):1803-19, 2014.
[Is] ISSN:1051-0761
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We used biotelemetry and human dimensions surveys to explore potential solutions to migration mortality of an endangered population of coho salmon caught as bycatch in an aboriginal beach seine fishery. From 2009 to 2011, 182 wild coho salmon caught as bycatch in the lower Fraser River (Canada) were radio-tagged and tracked as they attempted to complete their migrations to natal spawning areas over 300 km upstream. Failure to survive to reach terminal radio receiving stations averaged 39% over three years. This mortality estimate is low compared to those obtained from telemetry studies on other salmon fisheries in the Fraser River. However, this value is markedly higher than the mortality estimate currently used to manage the fishery's impact. It is also in contrast to the perceptions of the majority of aboriginal fishers, who did not think survival of coho salmon is affected by capture and release from their fishery. Increased probability of survival was associated with lower reflex impairment, which is consistent with previous findings. Reflex impairment was positively correlated with entanglement time, suggesting that greater efforts by the fishers to release bycatch from their nets quickly would minimize post-release mortality. Survey responses by aboriginal fishers also suggested that they are receptive to employing new bycatch handling methods if they are shown to increase post-release survival. However, attempts to facilitate revival of a subset of captured fish using cylindrical in-river recovery bags did not improve migration success. Fisheries managers could use the new information from this study to better quantify impacts and evaluate different harvest options. Since aboriginal fishers were receptive to using alternate handling methods, efforts to improve knowledge on minimizing reflex impairment through reductions in handling time could help increase bycatch survival. Such a direct integration of social science and applied ecology is a novel approach to understanding conservation issues that can better inform meaningful actions to promote species recovery.
[Mh] Termos MeSH primário: Migração Animal
Pesqueiros
Oncorhynchus kisutch/fisiologia
Grupos Populacionais
Rios
[Mh] Termos MeSH secundário: Animais
Canadá
Conservação dos Recursos Naturais/métodos
Espécies em Perigo de Extinção
Seres Humanos
Telemetria
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180108
[Lr] Data última revisão:
180108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


  10 / 4813 MEDLINE  
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[PMID]:29210236
[Au] Autor:Jones JD; Kauffman MJ; Monteith KL; Scurlock BM; Albeke SE; Cross PC
[Ti] Título:Supplemental feeding alters migration of a temperate ungulate.
[So] Source:Ecol Appl;24(7):1769-79, 2014.
[Is] ISSN:1051-0761
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Conservation of migration requires information on behavior and environmental determinants. The spatial distribution of forage resources, which migration exploits, often are altered and may have subtle, unintended consequences. Supplemental feeding is a common management practice, particularly for ungulates in North America and Europe, and carryover effects on behavior of this anthropogenic manipulation of forage are expected in theory, but have received limited empirical evaluation, particularly regarding effects on migration. We used global positioning system (GPS) data to evaluate the influence of winter feeding on migration behavior of 219 adult female elk (Cervus elaphus) from 18 fed ranges and 4 unfed ranges in western Wyoming. Principal component analysis revealed that the migratory behavior of fed and unfed elk differed in distance migrated, and the timing of arrival to, duration on, and departure from summer range. Fed elk migrated 19.2 km less, spent 11 more days on stopover sites, arrived to summer range 5 days later, resided on summer range 26 fewer days, and departed in the autumn 10 days earlier than unfed elk. Time-to-event models indicated that differences in migratory behavior between fed and unfed elk were caused by altered sensitivity to the environmental drivers of migration. In spring, unfed elk migrated following plant green-up closely, whereas fed elk departed the feedground but lingered on transitional range, thereby delaying their arrival to summer range. In autumn, fed elk were more responsive to low temperatures and precipitation events, causing earlier departure from summer range than unfed elk. Overall, supplemental feeding disconnected migration by fed elk from spring green-up and decreased time spent on summer range, thereby reducing access to quality forage. Our findings suggest that ungulate migration can be substantially altered by changes to the spatial distribution of resources, including those of anthropogenic origin, and that management practices applied in one season may have unintended behavioral consequences in subsequent seasons.
[Mh] Termos MeSH primário: Ração Animal
Migração Animal
Cervos/fisiologia
Comportamento Alimentar
[Mh] Termos MeSH secundário: Animais
Ecossistema
Monitoramento Ambiental
Seres Humanos
Modelos Biológicos
Wyoming
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180108
[Lr] Data última revisão:
180108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde