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Pesquisa : B01.050.500.131.617.720.500.500.875.387 [Categoria DeCS]
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  1 / 9956 MEDLINE  
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[PMID]:29447197
[Au] Autor:Fujita T; Kozuka-Hata H; Hori Y; Takeuchi J; Kubo T; Oyama M
[Ad] Endereço:Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
[Ti] Título:Shotgun proteomics deciphered age/division of labor-related functional specification of three honeybee (Apis mellifera L.) exocrine glands.
[So] Source:PLoS One;13(2):e0191344, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The honeybee (Apis mellifera L.) uses various chemical signals produced by the worker exocrine glands to maintain the functioning of its colony. The roles of worker postcerebral glands (PcGs), thoracic glands (TGs), and mandibular glands (MGs) and the functional changes they undergo according to the division of labor from nursing to foraging are not as well studied. To comprehensively characterize the molecular roles of these glands in workers and their changes according to the division of labor of workers, we analyzed the proteomes of PcGs, TGs, and MGs from nurse bees and foragers using shotgun proteomics technology. We identified approximately 2000 proteins from each of the nurse bee or forager glands and highlighted the features of these glands at the molecular level by semiquantitative enrichment analyses of frequently detected, gland-selective, and labor-selective proteins. First, we found the high potential to produce lipids in PcGs and MGs, suggesting their relation to pheromone production. Second, we also found the proton pumps abundant in TGs and propose some transporters possibly related to the saliva production. Finally, our data unveiled candidate enzymes involved in labor-dependent acid production in MGs.
[Mh] Termos MeSH primário: Abelhas/genética
Glândulas Exócrinas/fisiologia
Proteômica/métodos
[Mh] Termos MeSH secundário: Fatores Etários
Sequência de Aminoácidos
Animais
Abelhas/metabolismo
Comportamento Animal/fisiologia
Glândulas Exócrinas/citologia
Glândulas Exócrinas/metabolismo
Proteínas de Insetos/metabolismo
Feromônios/metabolismo
Proteoma/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Insect Proteins); 0 (Pheromones); 0 (Proteome)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180216
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191344


  2 / 9956 MEDLINE  
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[PMID]:29444076
[Au] Autor:Everaars J; Settele J; Dormann CF
[Ad] Endereço:Department of Computational Landscape Ecology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany.
[Ti] Título:Fragmentation of nest and foraging habitat affects time budgets of solitary bees, their fitness and pollination services, depending on traits: Results from an individual-based model.
[So] Source:PLoS One;13(2):e0188269, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Solitary bees are important but declining wild pollinators. During daily foraging in agricultural landscapes, they encounter a mosaic of patches with nest and foraging habitat and unsuitable matrix. It is insufficiently clear how spatial allocation of nesting and foraging resources and foraging traits of bees affect their daily foraging performance. We investigated potential brood cell construction (as proxy of fitness), number of visited flowers, foraging habitat visitation and foraging distance (pollination proxies) with the model SOLBEE (simulating pollen transport by solitary bees, tested and validated in an earlier study), for landscapes varying in landscape fragmentation and spatial allocation of nesting and foraging resources. Simulated bees varied in body size and nesting preference. We aimed to understand effects of landscape fragmentation and bee traits on bee fitness and the pollination services bees provide, as well as interactions between them, and the general consequences it has to our understanding of the system. This broad scope gives multiple key results. 1) Body size determines fitness more than landscape fragmentation, with large bees building fewer brood cells. High pollen requirements for large bees and the related high time budgets for visiting many flowers may not compensate for faster flight speeds and short handling times on flowers, giving them overall a disadvantage compared to small bees. 2) Nest preference does affect distribution of bees over the landscape, with cavity-nesting bees being restricted to nesting along field edges, which inevitably leads to performance reductions. Fragmentation mitigates this for cavity-nesting bees through increased edge habitat. 3) Landscape fragmentation alone had a relatively small effect on all responses. Instead, the local ratio of nest to foraging habitat affected bee fitness positively through reduced local competition. The spatial coverage of pollination increases steeply in response to this ratio for all bee sizes. The nest to foraging habitat ratio, a strong habitat proxy incorporating fragmentation could be a promising and practical measure for comparing landscape suitability for pollinators. 4) The number of flower visits was hardly affected by resource allocation, but predominantly by bee size. 5) In landscapes with the highest visitation coverage, bees flew least far, suggesting that these pollination proxies are subject to a trade-off between either longer pollen transport distances or a better pollination coverage, linked to how nests are distributed over the landscape rather than being affected by bee size.
[Mh] Termos MeSH primário: Abelhas/fisiologia
Comportamento Alimentar
Modelos Teóricos
Comportamento de Nidação
Polinização
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180215
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0188269


  3 / 9956 MEDLINE  
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[PMID]:29458462
[Au] Autor:Wang C; Huang Y; Li L; Guo J; Wu Z; Deng Y; Dai L; Ma S
[Ad] Endereço:1​Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China.
[Ti] Título:Lactobacillus panisapium sp. nov., from honeybee Apis cerana bee bread.
[So] Source:Int J Syst Evol Microbiol;68(3):703-708, 2018 Mar.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A novel facultatively anaerobic, Gram-stain-positive, non-motile, non-spore-forming, catalase-negative bacterium of the genus Lactobacillus, designated strain Bb 2-3 , was isolated from bee bread of Apis cerana collected from a hive in Kunming, China. The strain was regular rod-shaped. Optimal growth occurred at 37 °C, pH 6.5 with 5.0 g l NaCl. The predominant fatty acids were C18 : 1ω9c, C16 : 0 and C19 : 0 iso. Respiratory quinones were not detected. Seven glycolipids, three lipids, phosphatidylglycerol and diphosphatidylglycerol were detected. The peptidoglycan type A4α l-Lys-d-Asp was determined. Strain Bb 2-3 was closely related to Lactobacillus bombicola DSM 28793 , Lactobacillus apis LMG 26964 and Lactobacillus helsingborgensis DSM 26265 , with 97.8, 97.6 and 97.0 % 16S rRNA gene sequence similarity, respectively. A comparison of two housekeeping genes, rpoA and pheS, revealed that strain Bb 2-3 was well separated from the reference strains of species of the genus Lactobacillus. The average nucleotide identity between strain Bb 2-3 and the type strains of closely related species was lower than the 95-96 % threshold value for delineation of genomic prokaryotic species. The G+C content of the genomic DNA of strain Bb 2-3 was 37.4 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic analyses, strain Bb 2-3 is proposed to represent a novel species of the genus Lactobacillus, for which we propose the name Lactobacillus panisapium sp. nov. The type strain is Bb 2-3 (=DSM 102188 =ACCC 19955 ).
[Mh] Termos MeSH primário: Abelhas/microbiologia
Lactobacillus/classificação
Filogenia
Própole
[Mh] Termos MeSH secundário: Animais
Técnicas de Tipagem Bacteriana
Composição de Bases
China
DNA Bacteriano/genética
Ácidos Graxos/química
Glicolipídeos/química
Lactobacillus/genética
Lactobacillus/isolamento & purificação
Peptidoglicano/química
Fosfolipídeos/química
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Glycolipids); 0 (Peptidoglycan); 0 (Phospholipids); 0 (RNA, Ribosomal, 16S); 9009-62-5 (Propolis)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180221
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.002538


  4 / 9956 MEDLINE  
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[PMID]:29351552
[Au] Autor:Kropf J; Rössler W
[Ad] Endereço:Behavioral Physiology and Sociobiology (Zoology II), Biozentrum, University of Würzburg, Würzburg, Germany.
[Ti] Título:In-situ recording of ionic currents in projection neurons and Kenyon cells in the olfactory pathway of the honeybee.
[So] Source:PLoS One;13(1):e0191425, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The honeybee olfactory pathway comprises an intriguing pattern of convergence and divergence: ~60.000 olfactory sensory neurons (OSN) convey olfactory information on ~900 projection neurons (PN) in the antennal lobe (AL). To transmit this information reliably, PNs employ relatively high spiking frequencies with complex patterns. PNs project via a dual olfactory pathway to the mushroom bodies (MB). This pathway comprises the medial (m-ALT) and the lateral antennal lobe tract (l-ALT). PNs from both tracts transmit information from a wide range of similar odors, but with distinct differences in coding properties. In the MBs, PNs form synapses with many Kenyon cells (KC) that encode odors in a spatially and temporally sparse way. The transformation from complex information coding to sparse coding is a well-known phenomenon in insect olfactory coding. Intrinsic neuronal properties as well as GABAergic inhibition are thought to contribute to this change in odor representation. In the present study, we identified intrinsic neuronal properties promoting coding differences between PNs and KCs using in-situ patch-clamp recordings in the intact brain. We found very prominent K+ currents in KCs clearly differing from the PN currents. This suggests that odor coding differences between PNs and KCs may be caused by differences in their specific ion channel properties. Comparison of ionic currents of m- and l-ALT PNs did not reveal any differences at a qualitative level.
[Mh] Termos MeSH primário: Abelhas/citologia
Abelhas/fisiologia
Condutos Olfatórios/citologia
Condutos Olfatórios/fisiologia
[Mh] Termos MeSH secundário: Potenciais de Ação
Animais
Antenas de Artrópodes/citologia
Antenas de Artrópodes/fisiologia
Encéfalo/citologia
Encéfalo/fisiologia
Fenômenos Eletrofisiológicos
Canais Iônicos/fisiologia
Transporte de Íons
Corpos Pedunculados/citologia
Corpos Pedunculados/fisiologia
Neurônios Receptores Olfatórios/citologia
Neurônios Receptores Olfatórios/fisiologia
Técnicas de Patch-Clamp
Olfato/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Ion Channels)
[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:180120
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191425


  5 / 9956 MEDLINE  
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[PMID]:29294192
[Au] Autor:Balamurali GS; Nicholls E; Somanathan H; Hempel de Ibarra N
[Ad] Endereço:School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, India.
[Ti] Título:A comparative analysis of colour preferences in temperate and tropical social bees.
[So] Source:Naturwissenschaften;105(1-2):8, 2018 Jan 02.
[Is] ISSN:1432-1904
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The spontaneous occurrence of colour preferences without learning has been demonstrated in several insect species; however, the underlying mechanisms are still not understood. Here, we use a comparative approach to investigate spontaneous and learned colour preferences in foraging bees of two tropical and one temperate species. We hypothesised that tropical bees utilise different sets of plants and therefore might differ in their spontaneous colour preferences. We tested colour-naive bees and foragers from colonies that had been enclosed in large flight cages for a long time. Bees were shortly trained with triplets of neutral, UV-grey stimuli placed randomly at eight locations on a black training disk to induce foraging motivation. During unrewarded tests, the bees' responses to eight colours were video-recorded. Bees explored all colours and displayed an overall preference for colours dominated by long or short wavelengths, rather than a single colour stimulus. Naive Apis cerana and Bombus terrestris showed similar choices. Both inspected long-wavelength stimuli more than short-wavelength stimuli, whilst responses of the tropical stingless bee Tetragonula iridipennis differed, suggesting that resource partitioning could be a determinant of spontaneous colour preferences. Reward on an unsaturated yellow colour shifted the bees' preference curves as predicted, which is in line with previous findings that brief colour experience overrides the expression of spontaneous preferences. We conclude that rather than determining foraging behaviour in inflexible ways, spontaneous colour preferences vary depending on experimental settings and reflect potential biases in mechanisms of learning and decision-making in pollinating insects.
[Mh] Termos MeSH primário: Abelhas/fisiologia
Comportamento de Escolha/fisiologia
Cor
Flores/fisiologia
[Mh] Termos MeSH secundário: Animais
Aprendizagem
Especificidade da Espécie
Clima Tropical
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1007/s00114-017-1531-z


  6 / 9956 MEDLINE  
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[PMID]:29382326
[Au] Autor:Chen X; Wu RZ; Zhu YQ; Ren ZM; Tong YL; Yang F; Dai GH
[Ad] Endereço:Institute of Basic Medicine, Zhejiang Academy of Traditional Chinese Medicine, No. 132, Tianmushan Road, Xihu District, Hangzhou, Zhejiang, China.
[Ti] Título:Study on the inhibition of Mfn1 by plant-derived miR5338 mediating the treatment of BPH with rape bee pollen.
[So] Source:BMC Complement Altern Med;18(1):38, 2018 Jan 30.
[Is] ISSN:1472-6882
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Recent studies have found that plant derived microRNA can cross-kingdom regulate the expression of genes in humans and other mammals, thereby resisting diseases. Can exogenous miRNAs cross the blood-prostate barrier and entry prostate then participate in prostate disease treatment? METHODS: Using HiSeq sequencing and RT-qPCR technology, we detected plant miRNAs that enriched in the prostates of rats among the normal group, BPH model group and rape bee pollen group. To forecast the functions of these miRNAs, the psRobot software and TargetFinder software were used to predict their candidate target genes in rat genome. The qRT-PCR technology was used to validate the expression of candidate target genes. RESULTS: Plant miR5338 was enriched in the posterior lobes of prostate gland of rats fed with rape bee pollen, which was accompanied by the improvement of BPH. Among the predicted target genes of miR5338, Mfn1 was significantly lower in posterior lobes of prostates of rats in the rape bee pollen group than control groups. Further experiments suggested that Mfn1 was highly related to BPH. CONCLUSIONS: These results suggesting that plant-derived miR5338 may involve in treatment of rat BPH through inhibiting Mfn1 in prostate. These results will provide more evidence for plant miRNAs cross-kingdom regulation of animal gene, and will provide preliminary theoretical and experimental basis for development of rape bee pollen into innovative health care product or medicine for the treatment of BPH.
[Mh] Termos MeSH primário: Proteínas de Membrana/antagonistas & inibidores
MicroRNAs/farmacologia
Proteínas Mitocondriais/antagonistas & inibidores
Pólen
Próstata/efeitos dos fármacos
Hiperplasia Prostática/metabolismo
RNA de Plantas/farmacologia
[Mh] Termos MeSH secundário: Animais
Abelhas
Peso Corporal/efeitos dos fármacos
Masculino
Proteínas de Membrana/metabolismo
Proteínas Mitocondriais/metabolismo
Tamanho do Órgão/efeitos dos fármacos
RNA de Plantas/farmacocinética
Ratos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Membrane Proteins); 0 (MicroRNAs); 0 (Mitochondrial Proteins); 0 (RNA, Plant); 0 (mitofusin 1 protein, rat)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180201
[St] Status:MEDLINE
[do] DOI:10.1186/s12906-018-2107-y


  7 / 9956 MEDLINE  
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[PMID]:29324841
[Au] Autor:Corby-Harris V; Snyder L; Meador C; Ayotte T
[Ad] Endereço:Carl Hayden Bee Research Center, USDA-ARS, Tucson, Arizona, United States of America.
[Ti] Título:Honey bee (Apis mellifera) nurses do not consume pollens based on their nutritional quality.
[So] Source:PLoS One;13(1):e0191050, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Honey bee workers (Apis mellifera) consume a variety of pollens to meet the majority of their requirements for protein and lipids. Recent work indicates that honey bees prefer diets that reflect the proper ratio of nutrients necessary for optimal survival and homeostasis. This idea relies on the precept that honey bees evaluate the nutritional composition of the foods provided to them. While this has been shown in bumble bees, the data for honey bees are mixed. Further, there is controversy as to whether foragers can evaluate the nutritional value of pollens, especially if they do not consume it. Here, we focused on nurse workers, who eat most of the pollen coming into the hive. We tested the hypothesis that nurses prefer diets with higher nutritional value. We first determined the nutritional profile, number of plant taxa (richness), and degree of hypopharyngeal gland (HG) growth conferred by three honey bee collected pollens. We then presented nurses with these same three pollens in paired choice assays and measured consumption. To further test whether nutrition influenced preference, we also presented bees with natural pollens supplemented with protein or lipids and liquid diets with protein and lipid ratios equal to the natural pollens. Different pollens conferred different degrees of HG growth, but despite these differences, nurse bees did not always prefer the most nutritious pollens. Adding protein and/or lipids to less desirable pollens minimally increased pollen attractiveness, and nurses did not exhibit a strong preference for any of the three liquid diets. We conclude that different pollens provide different nutritional benefits, but that nurses either cannot or do not assess pollen nutritional value. This implies that the nurses may not be able to communicate information about pollen quality to the foragers, who regulate the pollens coming into the hive.
[Mh] Termos MeSH primário: Abelhas/fisiologia
Valor Nutritivo
Pólen
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191050


  8 / 9956 MEDLINE  
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[PMID]:29222859
[Au] Autor:Tyliszczak B; Drabczyk A; Kudlacik-Kramarczyk S; Grabowska B; Kedzierska M
[Ad] Endereço:Department of Chemistry and Technology of Polymers, Cracow University of Technology, Kraków, Poland.
[Ti] Título:Physicochemical properties and cytotoxicity of hydrogels based on Beetosan® containing sage and bee pollen.
[So] Source:Acta Biochim Pol;64(4):709-712, 2017.
[Is] ISSN:1734-154X
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:Currently, increasing attention is being paid to issues related to environmental protection, waste management, as well as to the development of polymers with useful properties. The research presented here involved preparation of hydrogels based on Beetosan® - a chitosan derived from the multi-stage processing of dead bees. Moreover, hydrogels were additionally modified with natural substances - i.e. bee pollen and extract of Salvia officinalis (sage) that are well known for the presence of many compounds with beneficial properties from a medical point of view. Materials have been first obtained by photopolymerization. Then, their surface morphology, wettability and cytotoxicity to selected cell lines have been determined. It can be stated that such combination of Beetosan® hydrogel matrix and the mentioned additives resulted in a preparation of polymers characterized by negative impact on cancer cells. Impact of hydrogels with sage is slightly more intense due to the presence of substances such as ursalic or rosmaric acid that are characterized to have anticancer activity. Such negative impact has not been observed in case of studies using fibroblasts. Furthermore, addition of natural substances into hydrogels resulted in a more homogeneous surface and in the decrease of wettability angle of the tested polymers. It can be concluded that the use of natural-derived reagents and synthesis of polymers using these reagents (as a result of environmentally friendly photopolymerization) yields materials with interesting properties for medical purposes, with particular emphasis on antitumor activity, and without significant negative impact on fibroblasts.
[Mh] Termos MeSH primário: Hidrogéis/química
Hidrogéis/toxicidade
Pólen/química
[Mh] Termos MeSH secundário: Animais
Abelhas
Quitosana/química
Seres Humanos
Células Jurkat
Microscopia Eletrônica de Varredura
Salvia officinalis
Testes de Toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydrogels); 9012-76-4 (Chitosan)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171210
[St] Status:MEDLINE
[do] DOI:10.18388/abp.2017_2319


  9 / 9956 MEDLINE  
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[PMID]:29385177
[Au] Autor:Dickel F; Münch D; Amdam GV; Mappes J; Freitak D
[Ad] Endereço:Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland.
[Ti] Título:Increased survival of honeybees in the laboratory after simultaneous exposure to low doses of pesticides and bacteria.
[So] Source:PLoS One;13(1):e0191256, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Recent studies of honeybees and bumblebees have examined combinatory effects of different stressors, as insect pollinators are naturally exposed to multiple stressors. At the same time the potential influences of simultaneously occurring agricultural agents on insect pollinator health remain largely unknown. Due to different farming methods, and the drift of applied agents and manure, pollinators are most probably exposed to insecticides but also bacteria from organic fertilizers at the same time. We orally exposed honeybee workers to sub-lethal doses of the insecticide thiacloprid and two strains of the bacterium Enterococcus faecalis, which can occur in manure from farming animals. Our results show that under laboratory conditions the bees simultaneously exposed to the a bacterium and the pesticide thiacloprid thiacloprid had significant higher survival rates 11 days post exposure than the controls, which surprisingly showed the lowest survival. Bees that were exposed to diet containing thiacloprid showed decreased food intake. General antibacterial activity is increased by the insecticide and the bacteria, resulting in a higher immune response observed in treated individuals compared to control individuals. We thus propose that caloric restriction through behavioural and physiological adaptations may have mediated an improved survival and stress resistance in our tests. However, the decreased food consumption could in long-term also result in possible negative effects at colony level. Our study does not show an additive negative impact of sub-lethal insecticide and bacteria doses, when tested under laboratory conditions. In contrast, we report seemingly beneficial effects of simultaneous exposure of bees to agricultural agents, which might demonstrate a surprising biological capacity for coping with stressors, possibly through hormetic regulation.
[Mh] Termos MeSH primário: Abelhas/efeitos dos fármacos
Abelhas/microbiologia
Enterococcus faecalis/patogenicidade
Inseticidas/toxicidade
Neonicotinoides/toxicidade
Tiazinas/toxicidade
[Mh] Termos MeSH secundário: Animais
Abelhas/fisiologia
Ingestão de Alimentos/efeitos dos fármacos
Hormese
Inseticidas/administração & dosagem
Neonicotinoides/administração & dosagem
Polinização
Estresse Fisiológico
Tiazinas/administração & dosagem
Virulência
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Insecticides); 0 (Neonicotinoids); 0 (Thiazines); DSV3A944A4 (thiacloprid)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180201
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191256


  10 / 9956 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



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