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  1 / 162 MEDLINE  
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[PMID]:27092938
[Au] Autor:Valdovinos-Flores C; Gaspar-Ramírez O; Heras-Ramírez ME; Lara-Álvarez C; Dorantes-Ugalde JA; Saldaña-Loza LM
[Ad] Endereço:Departamento de Medicina Genómica y Toxicología Ambiental/ Instituto de Investigaciones Biomédicas/ Universidad Nacional Autónoma de México, Ciudad de México, México.
[Ti] Título:Boron and Coumaphos Residues in Hive Materials Following Treatments for the Control of Aethina tumida Murray.
[So] Source:PLoS One;11(4):e0153551, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In the search of alternatives for controlling Aethina tumida Murray, we recently proposed the BAA trap which uses boric acid and an attractant which mimics the process of fermentation caused by Kodamaea ohmeri in the hive. This yeast is excreted in the feces of A. tumida causing the fermentation of pollen and honey of infested hives and releasing compounds that function as aggregation pheromones to A. tumida. Since the boron is the toxic element in boric acid, the aim of this article is to assess the amount of boron residues in honey and beeswax from hives treated with the BAA trap. For this aim, the amount of bioaccumulated boron in products of untreated hives was first determined and then compared with the amount of boron of products from hives treated with the BAA trap in two distinct climatic and soil conditions. The study was conducted in the cities of Padilla, Tamaulipas, and Valladolid, Yucatan (Mexico) from August 2014 to March 2015. The quantity of boron in honey was significantly less in Yucatan than in Tamaulipas; this agrees with the boron deficiency among Luvisol and Leptosol soils found in Yucatan compared to the Vertisol soil found in Tamaulipas. In fact, the honey from Yucatan has lower boron levels than those reported in the literature. The BAA treatment was applied for four months, results show that the BAA trap does not have any residual effect in either honey or wax; i.e., there is no significant difference in boron content before and after treatment. On the other hand, the organophosphate pesticide coumaphos was found in 100% of wax samples and in 64% of honey samples collected from Yucatan. The concentration of coumaphos in honey ranges from 0.005 to 0.040 mg/kg, which are below Maximum Residue Limit (MRL) allowed in the European Union (0.1 mg/kg) but 7.14% of samples exceeded the MRL allowed in Canada (0.02 mg/kg).
[Mh] Termos MeSH primário: Boro/efeitos adversos
Boro/química
Cumafos/efeitos adversos
Cumafos/química
Mel/análise
Ceras/análise
[Mh] Termos MeSH secundário: Animais
Canadá
Coleópteros/efeitos dos fármacos
Controle de Insetos/métodos
Inseticidas/efeitos adversos
Inseticidas/química
México
Feromônios/efeitos adversos
Pólen/efeitos dos fármacos
Solo/química
Leveduras/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Insecticides); 0 (Pheromones); 0 (Soil); 0 (Waxes); 8012-89-3 (beeswax); L08SZ5Z5JC (Coumaphos); N9E3X5056Q (Boron)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160420
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0153551


  2 / 162 MEDLINE  
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[PMID]:26979384
[Au] Autor:Chaimanee V; Evans JD; Chen Y; Jackson C; Pettis JS
[Ad] Endereço:Department of Biotechnology, Maejo University Phrae Campus, Rong Kwang, Phrae 54140, Thailand. Electronic address: chveeranan@gmail.com.
[Ti] Título:Sperm viability and gene expression in honey bee queens (Apis mellifera) following exposure to the neonicotinoid insecticide imidacloprid and the organophosphate acaricide coumaphos.
[So] Source:J Insect Physiol;89:1-8, 2016 Jun.
[Is] ISSN:1879-1611
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Honey bee population declines are of global concern. Numerous factors appear to cause these declines including parasites, pathogens, malnutrition and pesticides. Residues of the organophosphate acaricide coumaphos and the neonicotinoid insecticide imidacloprid, widely used to combat Varroa mites and for crop protection in agriculture, respectively, have been detected in wax, pollen and comb samples. Here, we assess the effects of these compounds at different doses on the viability of sperm stored in the honey bee queens' spermatheca. Our results demonstrate that sub-lethal doses of imidacloprid (0.02ppm) decreased sperm viability by 50%, 7days after treatment. Sperm viability was a downward trend (about 33%) in queens treated with high doses of coumaphos (100ppm), but there was not significant difference. The expression of genes that are involved in development, immune responses and detoxification in honey bee queens and workers exposed to chemicals was measured by qPCR analysis. The data showed that expression levels of specific genes were triggered 1day after treatment. The expression levels of P450 subfamily genes, CYP306A1, CYP4G11 and CYP6AS14 were decreased in honey bee queens treated with low doses of coumaphos (5ppm) and imidacloprid (0.02ppm). Moreover, these two compounds suppressed the expression of genes related to antioxidation, immunity and development in queens at day 1. Up-regulation of antioxidants by these compounds in worker bees was observed at day 1. Coumaphos also caused a repression of CYP306A1 and CYP4G11 in workers. Antioxidants appear to prevent chemical damage to honey bees. We also found that DWV replication increased in workers treated with imidacloprid. This research clearly demonstrates that chemical exposure can affect sperm viability in queen honey bees.
[Mh] Termos MeSH primário: Acaricidas/toxicidade
Abelhas/fisiologia
Cumafos/toxicidade
Regulação da Expressão Gênica
Imidazóis/toxicidade
Inseticidas/toxicidade
Nitrocompostos/toxicidade
Espermatozoides/fisiologia
[Mh] Termos MeSH secundário: Animais
Abelhas/genética
Sobrevivência Celular
Regulação para Baixo
Feminino
Masculino
Neonicotinoides
Distribuição Aleatória
Regulação para Cima
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acaricides); 0 (Imidazoles); 0 (Insecticides); 0 (Neonicotinoids); 0 (Nitro Compounds); 3BN7M937V8 (imidacloprid); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160317
[St] Status:MEDLINE


  3 / 162 MEDLINE  
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[PMID]:26969442
[Au] Autor:Cizelj I; Glavan G; Bozic J; Oven I; Mrak V; Narat M
[Ad] Endereço:Biotechnical Faculty, Department of Animal Science, University of Ljubljana, Groblje 3, SI-1230 Domzale, Slovenia.
[Ti] Título:Prochloraz and coumaphos induce different gene expression patterns in three developmental stages of the Carniolan honey bee (Apis mellifera carnica Pollmann).
[So] Source:Pestic Biochem Physiol;128:68-75, 2016 Mar.
[Is] ISSN:1095-9939
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Carniolan honey bee, Apis mellifera carnica, is a Slovenian autochthonous subspecies of honey bee. In recent years, the country has recorded an annual loss of bee colonies through mortality of up to 35%. One possible reason for such high mortality could be the exposure of honey bees to xenobiotic residues that have been found in honey bee and beehive products. Acaricides are applied by beekeepers to control varroosis, while the most abundant common agricultural chemicals found in honey bee and beehive products are fungicides, which may enter the system when applied to nearby flowering crops and fruit plants. Acaricides and fungicides are not intrinsically highly toxic to bees but their action in combination might lead to higher honey bee sensitivity or mortality. In the present study we investigated the molecular immune response of honey bee workers at different developmental stages (prepupa, white-eyed pupa, adult) exposed to the acaricide coumaphos and the fungicide prochloraz individually and in combination. Expression of 17 immune-related genes was examined by quantitative RT-PCR. In treated prepupae downregulation of most immune-related genes was observed in all treatments, while in adults upregulation of most of the genes was recorded. Our study shows for the first time that negative impacts of prochloraz and a combination of coumaphos and prochloraz differ among the different developmental stages of honey bees. The main effect of the xenobiotic combination was found to be upregulation of the antimicrobial peptide genes abaecin and defensin-1 in adult honey bees. Changes in immune-related gene expression could result in depressed immunity of honey bees and their increased susceptibility to various pathogens.
[Mh] Termos MeSH primário: Abelhas/crescimento & desenvolvimento
Cumafos/farmacologia
Fungicidas Industriais/farmacologia
Expressão Gênica/efeitos dos fármacos
Imidazóis/farmacologia
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Fungicides, Industrial); 0 (Imidazoles); 99SFL01YCL (prochloraz); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1611
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160313
[St] Status:MEDLINE


  4 / 162 MEDLINE  
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[PMID]:26864478
[Au] Autor:Efremenko EN; Maslova OV; Kholstov AV; Senko OV; Ismailov AD
[Ad] Endereço:Lomonosov Moscow State University, Moscow, Russia.
[Ti] Título:Biosensitive element in the form of immobilized luminescent photobacteria for detecting ecotoxicants in aqueous flow-through systems.
[So] Source:Luminescence;31(6):1283-9, 2016 Sep.
[Is] ISSN:1522-7243
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:We demonstrated the possibility of long-term and efficient application of a biosensitive element (BE) in the form of Photobacterium phosphoreum photobacteria immobilized in poly(vinyl alcohol) (PVA) cryogel for detecting various ecotoxicants (Zn(2) (+) , Cu(2) (+) , Hg(2) (+) , Pb(2) (+) , 2,4-dichlorophenoxyacetic acid, 2,6-dimethylphenol, pentachlorophenol, coumaphos, malathion, chlorpyrifos and methyl parathion) in flow-through media. The range of detectable concentrations of ecotoxicants was determined at 1 × 10(-8) to 1 × 10(-4) M for heavy metal ions and at 1 × 10(-8) to 1 × 10(-5) M for phenol derivatives and organophosphorus pesticides. Immobilized cells of photobacteria quantitatively reacted with these ecotoxicants; cell sensitivity exhibited no flow rate dependence in the range from 45 to 180 mL/h. At a constant concentration of ecotoxicant in the flow, the bioluminescence quenching profile of immobilized cells demonstrated an integral response. The BE could remain in a flow-through medium for at least 10 days while retaining 95% of luminescent activity in the absence of ecotoxicants. The BE tested in this work was demonstrated to have a long shelf life (> 60 weeks) at -80°C without changes in the baseline level of bioluminescence. Copyright © 2016 John Wiley & Sons, Ltd.
[Mh] Termos MeSH primário: Técnicas Biossensoriais
Células Imobilizadas/química
Análise de Injeção de Fluxo
Luminescência
Photobacterium/química
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Ácido 2,4-Diclorofenoxiacético/análise
Clorpirifos/análise
Cumafos/análise
Malation/análise
Metais Pesados/análise
Metil Paration/análise
Xilenos/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metals, Heavy); 0 (Water Pollutants, Chemical); 0 (Xylenes); 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid); 41BCL2O91D (Methyl Parathion); I8N0RO87OV (2,6-xylenol); JCS58I644W (Chlorpyrifos); L08SZ5Z5JC (Coumaphos); U5N7SU872W (Malathion)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170418
[Lr] Data última revisão:
170418
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160212
[St] Status:MEDLINE
[do] DOI:10.1002/bio.3104


  5 / 162 MEDLINE  
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[PMID]:26423556
[Au] Autor:Boi M; Serra G; Colombo R; Lodesani M; Massi S; Costa C
[Ad] Endereço:Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Unità di ricerca di apicoltura e bachicoltura, Bologna, Italy.
[Ti] Título:A 10 year survey of acaricide residues in beeswax analysed in Italy.
[So] Source:Pest Manag Sci;72(7):1366-72, 2016 Jul.
[Is] ISSN:1526-4998
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The aim of this work was to provide an overview of the prevalence and level of acaricides in beeswax used in Italy in the past 10 years by analysing 1319 beeswax samples processed by the certified laboratory of the Italian Bee Research Institute. RESULTS: The proportion of samples positive to at least one active ingredient decreased between 2005 and 2009 (from 69 to 32%) and then increased again between 2009 and 2014 (from 32 to 91%). This trend is in agreement with reports from beekeepers that the use of synthetic acaricides decreased in the second half of the past decade and increased after the beginning of the colony losses phenomenon. The active ingredient with the greatest overall proportion of positive samples was coumaphos (49%), followed by fluvalinate (38%) and chlorphenvinphos (25%). The indicator for amitraz, 2,4-dimethylphenylformamide (DMPF), was detected in a very small proportion of samples (6%), while residues of cymiazole were never found. CONCLUSIONS: In more than half of the analysed samples, residues of at least one active ingredient were detected. The mean levels of residues of all the considered active ingredients in the positive samples may represent a source of accumulation in beeswax and pose risks to honey bee health. © 2015 Society of Chemical Industry.
[Mh] Termos MeSH primário: Acaricidas/química
Resíduos de Praguicidas/análise
Ceras/química
[Mh] Termos MeSH secundário: Clorfenvinfos/química
Cumafos/química
Itália
Nitrilos/química
Piretrinas/química
Inquéritos e Questionários
Tiazóis/química
Toluidinas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acaricides); 0 (Nitriles); 0 (Pesticide Residues); 0 (Pyrethrins); 0 (Thiazoles); 0 (Toluidines); 0 (Waxes); 33IAH5017S (amitraz); 364G5G03VC (fluvalinate); 7XR6MQQ6BK (cymiazole); 8012-89-3 (beeswax); F2G9XS1W91 (Chlorfenvinphos); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170228
[Lr] Data última revisão:
170228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151002
[St] Status:MEDLINE
[do] DOI:10.1002/ps.4161


  6 / 162 MEDLINE  
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[PMID]:25840925
[Au] Autor:Kumar S; Sharma AK; Nagar G; Ghosh S
[Ad] Endereço:Entomology Laboratory, Parasitology Division, Indian Veterinary Research Institute, Bareilly 243122, UP, India.
[Ti] Título:Determination and establishment of discriminating concentrations of malathion, coumaphos, fenvalerate and fipronil for monitoring acaricide resistance in ticks infesting animals.
[So] Source:Ticks Tick Borne Dis;6(3):383-7, 2015 Apr.
[Is] ISSN:1877-9603
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Discriminating concentrations (DCs) of malathion, coumaphos, fenvalerate and fipronil were determined to monitor acaricide resistance in field conditions. The LC99 values with 95% confidence interval for malathion, coumaphos, fenvalerate and fipronil were 5126.8 (5011.5-5240.7), 131.0 (120.4-142.5), 2257.5 (2198.1-2318.4) and 6.2 (5.87-6.55), respectively. The narrow confidence intervals in LC50 and LC99 of adult immersion test (AIT) and larval packet test (LPT) affirming the homogeneity of IVRI-I line. Variation in LPT based LC50 and LC99 values of malathion (55.9ppm) and coumpahos (28.4ppm) compared to those obtained in AIT indicating that larvae were more susceptible to these chemicals. The DCs for malathion, coumaphos, fenvalerate and fipronil against adults were determined as 10253.6, 262.0, 4515.0 and 12.4ppm while against larvae the values were 111.8, 56.8, 4014.0 and 9.6ppm, respectively. The working efficiency of DCs was successfully tested in field tick isolates. Establishment of country specific DCs of commonly used insecticides for monitoring of resistance in field ticks is emphasized for establishing tick control strategies.
[Mh] Termos MeSH primário: Doenças dos Bovinos/tratamento farmacológico
Inseticidas/farmacologia
Rhipicephalus/efeitos dos fármacos
Infestações por Carrapato/tratamento farmacológico
[Mh] Termos MeSH secundário: Animais
Bovinos
Cumafos/farmacologia
Relação Dose-Resposta a Droga
Feminino
Resistência a Inseticidas
Larva
Malation/farmacologia
Masculino
Nitrilos/farmacologia
Prevalência
Pirazóis/farmacologia
Piretrinas/farmacologia
Controle de Ácaros e Carrapatos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES
[Nm] Nome de substância:
0 (Insecticides); 0 (Nitriles); 0 (Pyrazoles); 0 (Pyrethrins); L08SZ5Z5JC (Coumaphos); QGH063955F (fipronil); U5N7SU872W (Malathion); Z6MXZ39302 (fenvalerate)
[Em] Mês de entrada:1605
[Cu] Atualização por classe:150420
[Lr] Data última revisão:
150420
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150405
[St] Status:MEDLINE


  7 / 162 MEDLINE  
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[PMID]:25450567
[Au] Autor:Schmehl DR; Teal PE; Frazier JL; Grozinger CM
[Ad] Endereço:Department of Entomology, Center for Pollinator Research, The Pennsylvania State University, University Park, PA, USA. Electronic address: danielrschmehl@ufl.com.
[Ti] Título:Genomic analysis of the interaction between pesticide exposure and nutrition in honey bees (Apis mellifera).
[So] Source:J Insect Physiol;71:177-90, 2014 Dec.
[Is] ISSN:1879-1611
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Populations of pollinators are in decline worldwide. These declines are best documented in honey bees and are due to a combination of stressors. In particular, pesticides have been linked to decreased longevity and performance in honey bees; however, the molecular and physiological pathways mediating sensitivity and resistance to pesticides are not well characterized. We explored the impact of coumaphos and fluvalinate, the two most abundant and frequently detected pesticides in the hive, on genome-wide gene expression patterns of honey bee workers. We found significant changes in 1118 transcripts, including genes involved in detoxification, behavioral maturation, immunity, and nutrition. Since behavioral maturation is regulated by juvenile hormone III (JH), we examined effects of these miticides on hormone titers; while JH titers were unaffected, titers of methyl farnesoate (MF), the precursor to JH, were decreased. We further explored the association between nutrition- and pesticide-regulated gene expression patterns and demonstrated that bees fed a pollen-based diet exhibit reduced sensitivity to a third pesticide, chlorpyrifos. Finally, we demonstrated that expression levels of several of the putative pesticide detoxification genes identified in our study and previous studies are also upregulated in response to pollen feeding, suggesting that these pesticides and components in pollen modulate similar molecular response pathways. Our results demonstrate that pesticide exposure can substantially impact expression of genes involved in several core physiological pathways in honey bee workers. Additionally, there is substantial overlap in responses to pesticides and pollen-containing diets at the transcriptional level, and subsequent analyses demonstrated that pollen-based diets reduce workers' pesticide sensitivity. Thus, providing honey bees and other pollinators with high quality nutrition may improve resistance to pesticides.
[Mh] Termos MeSH primário: Fenômenos Fisiológicos da Nutrição Animal/efeitos dos fármacos
Abelhas/efeitos dos fármacos
Abelhas/genética
Cumafos/toxicidade
Genoma de Inseto/efeitos dos fármacos
Inseticidas/toxicidade
Nitrilos/toxicidade
Piretrinas/toxicidade
[Mh] Termos MeSH secundário: Animais
Abelhas/fisiologia
Dieta
Regulação da Expressão Gênica
Estudo de Associação Genômica Ampla
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Insecticides); 0 (Nitriles); 0 (Pyrethrins); 364G5G03VC (fluvalinate); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1507
[Cu] Atualização por classe:141203
[Lr] Data última revisão:
141203
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:141203
[St] Status:MEDLINE


  8 / 162 MEDLINE  
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[PMID]:25122502
[Au] Autor:Li Y; Ma X; Zhao M; Qi P; Zhong J
[Ad] Endereço:Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou, Guangdong, China; Pre-university Department, Jinan University, Guangzhou, Guangdong, China.
[Ti] Título:Quick and label-free detection for Coumaphos by using surface plasmon resonance biochip.
[So] Source:PLoS One;9(8):e104689, 2014.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Coumaphos is a common organophosphorus pesticide used in agricultural products. It is harmful to human health and has a strictly stipulated maximum residue limit (MRL) on fruits and vegetables. Currently existing methods for detection are complex in execution, require expensive tools and are time consuming and labor intensive. The surface plasmon resonance method has been widely used in biomedicine and many other fields. This study discusses a detection method based on surface plasmon resonance in organophosphorus pesticide residues. As an alternative solution, this study proposes a method to detect Coumaphos. The method, which is based on surface plasmon resonance (SPR) and immune reaction, belongs to the suppression method. A group of samples of Coumaphos was detected by this method. The concentrations of Coumaphos in the samples were 0 µg/L, 50 µg/L, 100 µg/L, 300 µg/L, 500 µg/L, 1000 µg/L, 3000 µg/L and 5000 µg/L, respectively. Through detecting a group of samples, the process of kinetic reactions was analyzed and the corresponding standard curve was obtained. The sensibility is less than 25 µg/L, conforming to the standard of the MRL of Coumaphos stipulated by China. This method is label-free, using an unpurified single antibody only and can continuously test at least 80 groups of samples continuously. It has high sensitivity and specificity. The required equipments are simple, environmental friendly and easy to control. So this method is promised for a large number of samples quick detection on spot and for application prospects.
[Mh] Termos MeSH primário: Cumafos/química
Resíduos de Praguicidas/análise
Resíduos de Praguicidas/química
Praguicidas/análise
Praguicidas/química
Ressonância de Plasmônio de Superfície/métodos
[Mh] Termos MeSH secundário: Agricultura/métodos
Anticorpos/química
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antibodies); 0 (Pesticide Residues); 0 (Pesticides); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1504
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140815
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0104689


  9 / 162 MEDLINE  
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[PMID]:25042249
[Au] Autor:Yuan Z; Yao J; Liu H; Han J; Trebse P
[Ad] Endereço:School of Civil & Environmental Engineering and National "International Cooperation Based on Environment and Energy", and Key Laboratory of "Metal and Mine Efficiently Exploiting and Safety" Ministry of Education, University of Science and Technology Beijing, 100083 Beijing, PR China.
[Ti] Título:Photodegradation of organophosphorus pesticides in honey medium.
[So] Source:Ecotoxicol Environ Saf;108:84-8, 2014 Oct.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Honey can be polluted due to environmental pollution and misuse of beekeeping practices. In the present study, photodegradation experiments of organophosphorus pesticides (coumaphos, methyl parathion and fenitrothion) in honey medium were conducted using Atlas Suntest simulator CPS+ as a sunlight producer. Photodegradation experiments were conducted under three different intensities as 250W/m(2), 500W/m(2) and 750W/m(2) to evaluate the impact of sunlight intensity on removal of OPs in honey medium. Significant decreases of three OPs' concentrations were observed. Coumaphos showed the highest degradability, reaching a degradation percentage of 90 percent within 15min. After 1h irradiation, residual percentages of coumaphos were 6.62 percent for 250W/m(2), 3.48 percent for 500W/m(2) and 2.98 percent for 750W/m(2), respectively. Methyl parathion and fenitrothion also could be removed through photodegradation efficiently. After 1h irradiation, the residual percentages of methyl parathion and fenitrothion under 750W/m(2) sunlight irradiation were 26.89 percent and 16.70 percent, respectively. Intensity of sunlight showed a positive impact on removal of OPs in honey medium. The higher intensity, the lower residual percentage. Photodegradation of three OPs fitted well with pseudo-first order kinetics. Half-lives calculated from pseudo-first order kinetics were 17.61min (250W/m(2)), 16.67min (500W/m(2)) and 17.58min (750W/m(2)) for coumaphos, 57.62min (250W/m(2)), 34.13min (500W/m(2)) and 31.69min (750W/m(2)) for methyl parathion and 144.70min (250W/m(2)), 95.47min (500W/m(2)) and 22.57min (750W/m(2)) for fenitrothion, respectively. Most of the three OPs could dissipate in a short time under sunlight irradiation. Photodegradation could be accepted as an appropriate method for the removal of OPs in honey medium.
[Mh] Termos MeSH primário: Cumafos/química
Fenitrotion/química
Mel
Metil Paration/química
Fotólise
[Mh] Termos MeSH secundário: Poluentes Ambientais/química
Estudos de Viabilidade
Inseticidas/química
Cinética
Luz Solar
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Insecticides); 41BCL2O91D (Methyl Parathion); L08SZ5Z5JC (Coumaphos); W8M4X3Y7ZY (Fenitrothion)
[Em] Mês de entrada:1411
[Cu] Atualização por classe:140905
[Lr] Data última revisão:
140905
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140722
[St] Status:MEDLINE


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[PMID]:24416121
[Au] Autor:Zhu W; Schmehl DR; Mullin CA; Frazier JL
[Ad] Endereço:Department of Entomology, Center for Pollinator Research, The Pennsylvania State University, University Park, Pennsylvania, United States of America.
[Ti] Título:Four common pesticides, their mixtures and a formulation solvent in the hive environment have high oral toxicity to honey bee larvae.
[So] Source:PLoS One;9(1):e77547, 2014.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Recently, the widespread distribution of pesticides detected in the hive has raised serious concerns about pesticide exposure on honey bee (Apis mellifera L.) health. A larval rearing method was adapted to assess the chronic oral toxicity to honey bee larvae of the four most common pesticides detected in pollen and wax--fluvalinate, coumaphos, chlorothalonil, and chloropyrifos--tested alone and in all combinations. All pesticides at hive-residue levels triggered a significant increase in larval mortality compared to untreated larvae by over two fold, with a strong increase after 3 days of exposure. Among these four pesticides, honey bee larvae were most sensitive to chlorothalonil compared to adults. Synergistic toxicity was observed in the binary mixture of chlorothalonil with fluvalinate at the concentrations of 34 mg/L and 3 mg/L, respectively; whereas, when diluted by 10 fold, the interaction switched to antagonism. Chlorothalonil at 34 mg/L was also found to synergize the miticide coumaphos at 8 mg/L. The addition of coumaphos significantly reduced the toxicity of the fluvalinate and chlorothalonil mixture, the only significant non-additive effect in all tested ternary mixtures. We also tested the common 'inert' ingredient N-methyl-2-pyrrolidone at seven concentrations, and documented its high toxicity to larval bees. We have shown that chronic dietary exposure to a fungicide, pesticide mixtures, and a formulation solvent have the potential to impact honey bee populations, and warrants further investigation. We suggest that pesticide mixtures in pollen be evaluated by adding their toxicities together, until complete data on interactions can be accumulated.
[Mh] Termos MeSH primário: Abelhas/efeitos dos fármacos
Meio Ambiente
Praguicidas/toxicidade
Solventes/química
[Mh] Termos MeSH secundário: Administração Oral
Animais
Clorpirifos/toxicidade
Cumafos/toxicidade
Dieta
Sinergismo Farmacológico
Mel
Larva/efeitos dos fármacos
Pirrolidinonas/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Pesticides); 0 (Pyrrolidinones); 0 (Solvents); JCS58I644W (Chlorpyrifos); JR9CE63FPM (N-methylpyrrolidone); L08SZ5Z5JC (Coumaphos)
[Em] Mês de entrada:1409
[Cu] Atualização por classe:161125
[Lr] Data última revisão:
161125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140114
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0077547



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