1,322 research outputs found

    Identificación y fluctuación poblacional del minador de la hoja Liriomyza trifolii en chile jalapeño en el norte de Sinaloa.

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    Mexico is one of the main producers of pepper. Near 140,000 ha are sown per year and the production rises to 1’180,000 t. In Sinaloa near 17,180 ha/per year are sown, with a production of 488,153 t. this crop is a major source of jobs and economic income. With the results of this research, we identified leaf miner species and their population fluctuation in jalapeño pepper at three locations in the north of Sinaloa. Twenty-nine weekly samplings were done from October 2008 to April 2009. Mines were counted leaflets. Adult fluctuation was determined with yellow fluorescent impact-traps at the height of the crop and another trap was set at 1.70 m. Liriomyza trifolli (Burgues) was determined taxonomically by using specialized keys. Even though the occurrence of the agromizid miner was observed in flowers and fruits stages of jalapeño pepper plants at the three locations, it was higher in Guasave compared to Ahome and El Fuerte locations. More adult agromizids were observed on the variable high traps than on the 1.70 high onesMéxico es de los principales productores de chile, ya que al año se siembran alrededor de 140,000 ha y la producción asciende a 1´180,000 t. En el estado de Sinaloa se establecen, en promedio, 17,180 ha/año, con una producción de 488,153 t. Este cultivo es una importante fuente de empleos y de derrama económica. Se identificaron las especies de minadores de la hoja y su fluctuación poblacional en el cultivo de chile jalapeño en tres municipios del norte de Sinaloa. Se desarrollaron 29 muestreos semanales de octubre de 2008 a abril de 2009. Se contabilizaron minas en foliolos. La fluctuación de adultos se determinó con trampas de impacto color amarillo fluorescente a la altura del cultivo y una trampa fija a 1.70 m. Se determinó taxonómicamente a Liriomyza trifolli (Burgess) mediante claves especializadas. Este agromícido presentó cantidades altas en el municipio de Guasave en comparación con Ahome y El Fuerte, aunque en los tres lotes las poblaciones más abundantes fueron en las etapas de floración y fructificación. Las trampas de altura variable capturaron más adultos del minador de la hoja en los tres lotes, en comparación con trampas fijas a 1.70 m

    Aspectos responsables en la experimentación con animales en medicina

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    Los animales son las principales víctimas de la historia, esto fue mencionado por primera vez en el texto descrito por Peter Singer La liberación animal. Enfocarse en una ética para el bienestar animal implica situar la mirada en la capacidad de sentir qué experimentan los animales. El bienestar animal es la capacidad de los animales de sentir dolor, sufrimiento, es decir, experimentan emociones.La experimentación animal no es un tema reciente, es un problema que ha existido desde hace muchos años. Un pilar fundamental es el comité de ética institucional, su función es evaluar cada paso antes, y durante la experimentación, verificando el programa, procedimiento, justificación, bienestar, ofrecer un digno y adecuado alojamiento que sea confortable. Cualquier experimentación con animales debe tener una justificación científica, evitar el dolor, sufrimiento, así como tener personal capacitado para salvaguardar su bienestar

    Nuevos registros y extensiones de distribución de mamíferos para Guanajuato, México

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    The objective of this study was to document new host plants and the geographical distributions of Melanagromyza floris Spencer, M. tomaterae Steyskal, M. viridis (Frost) and Ophiomyia lantanae (Froggatt). The study was carried out from August 2007 to August 2008. Puparia of these flies were collected on Tithonia sp. in Tonatico (state of Mexico); Physalis nicandroides Schltd in Atotonilco el Grande (state of Hidalgo); Tagetes erecta L. and Lantana camara L. in Huautla (state of Hidalgo) and Lantana camara L. in San Joaquin, state of Queretaro. Both flies and host plants were identified. T. erecta is a new host record for M. floris whereas P. nicandroides is a new host record for M. tomaterae. The flies M. floris and M. tomaterae are the first reports for these species in the state of Hidalgo. M. viridis is recorded from the southern part of the state of Mexico. Finally, O. lantanae is registered in two states: Hidalgo and Queretaro.El objetivo de este estudio fue documentar información sobre nuevas plantas hospederas y nuevos registros de distribución geográfica de Melanagromyza floris Spencer, M. tomaterae Steyskal, M. viridis (Frost) y Ophiomyia lantanae (Froggatt). Se realizaron colectas de puparios de agosto de 2007 a agosto de 2008 sobre Tithonia sp. en Tonatico, Estado de México, sobre Physalis nicandroides Schltdl en Atotonilco el Grande, sobre Tagetes erecta L. y Lantana camara L. en Huautla, ambos municipios del estado de Hidalgo y sobre Lantana camara L. en el municipio de San Joaquín, Querétaro. El material entomológico y vegetal se determinó taxonómicamente. Se registra por primera vez a T. erecta como nueva planta hospedera de M. floris, así como a P. nicandroides como nueva planta hospedera de M. tomaterae, a su vez también se adicionan nuevos registros de distribución para M. floris y M. tomaterae ambas especies amplían su distribución en el estado de Hidalgo, mientras que M. viridis amplía su distribución geográfica en la parte sur del estado de México. Finalmente se proporcionan para O. lantanae nuevos registros de distribución en los estados de Hidalgo y Querétar

    Effect of salinity on DNA methylation and antioxidant phenolic compounds of wild watercress (Rorippa nasturtium aquaticum)

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    Epigenetic changes are involved in plant responses to stress. Cytosine methylation is one of the most important epigenetic changes, regulating gene expression. In this paper, the MSAP (methylation-sensitive amplification polymorphism) method was used to find out how the watercress (Rorippa nasturtium aquaticum) genome changed in response to 0, 60, 80, and 100 mM NaCl and how that affected phenylalanine ammonium lyase (PAL) activity, phenolic content, and antioxidant capacity. The results showed an inverse correlation between methylation levels and PAL activity and the contents of total phenolics and flavonoids, indicating salt stress-induced reprogramming of the methylation pattern of watercress, which has a negative effect on the synthesis of phenolics. The results revealed a significant decrease in phenolic contents and antioxidant activity under low and moderate salinity compared to control and an increase under strong salinity compared to moderate salinity. The findings of this study contribute to our understanding of the reprogramming of DNA methylation under salinity and its effect on watercress phenolic metabolism

    una mirada desde las Ciencias de la Conducta

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    Este libro es el resultado de los trabajos presentados en el 1er Congreso Internacional "Convivencia y bienestar con sentido humanista para una cultura de paz"

    Miradas y voces de la investigación educativa I

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    Fil: Ferreyra, Horacio Ademar. Universidad Católica de Córdoba. Facultad de Educación; ArgentinaFil: Calneggia, María Isabel. Universidad Católica de Córdoba. Facultad de Educación; ArgentinaFil: Di Francesco, Adriana Carlota. Universidad Católica de Córdoba. Facultad de Educación; Argentin

    May Measurement Month 2018: a pragmatic global screening campaign to raise awareness of blood pressure by the International Society of Hypertension

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    Aims Raised blood pressure (BP) is the biggest contributor to mortality and disease burden worldwide and fewer than half of those with hypertension are aware of it. May Measurement Month (MMM) is a global campaign set up in 2017, to raise awareness of high BP and as a pragmatic solution to a lack of formal screening worldwide. The 2018 campaign was expanded, aiming to include more participants and countries. Methods and results Eighty-nine countries participated in MMM 2018. Volunteers (≥18 years) were recruited through opportunistic sampling at a variety of screening sites. Each participant had three BP measurements and completed a questionnaire on demographic, lifestyle, and environmental factors. Hypertension was defined as a systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg, or taking antihypertensive medication. In total, 74.9% of screenees provided three BP readings. Multiple imputation using chained equations was used to impute missing readings. 1 504 963 individuals (mean age 45.3 years; 52.4% female) were screened. After multiple imputation, 502 079 (33.4%) individuals had hypertension, of whom 59.5% were aware of their diagnosis and 55.3% were taking antihypertensive medication. Of those on medication, 60.0% were controlled and of all hypertensives, 33.2% were controlled. We detected 224 285 individuals with untreated hypertension and 111 214 individuals with inadequately treated (systolic BP ≥ 140 mmHg or diastolic BP ≥ 90 mmHg) hypertension. Conclusion May Measurement Month expanded significantly compared with 2017, including more participants in more countries. The campaign identified over 335 000 adults with untreated or inadequately treated hypertension. In the absence of systematic screening programmes, MMM was effective at raising awareness at least among these individuals at risk

    Familial hypercholesterolaemia in children and adolescents from 48 countries: a cross-sectional study

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    Background: Approximately 450 000 children are born with familial hypercholesterolaemia worldwide every year, yet only 2·1% of adults with familial hypercholesterolaemia were diagnosed before age 18 years via current diagnostic approaches, which are derived from observations in adults. We aimed to characterise children and adolescents with heterozygous familial hypercholesterolaemia (HeFH) and understand current approaches to the identification and management of familial hypercholesterolaemia to inform future public health strategies. Methods: For this cross-sectional study, we assessed children and adolescents younger than 18 years with a clinical or genetic diagnosis of HeFH at the time of entry into the Familial Hypercholesterolaemia Studies Collaboration (FHSC) registry between Oct 1, 2015, and Jan 31, 2021. Data in the registry were collected from 55 regional or national registries in 48 countries. Diagnoses relying on self-reported history of familial hypercholesterolaemia and suspected secondary hypercholesterolaemia were excluded from the registry; people with untreated LDL cholesterol (LDL-C) of at least 13·0 mmol/L were excluded from this study. Data were assessed overall and by WHO region, World Bank country income status, age, diagnostic criteria, and index-case status. The main outcome of this study was to assess current identification and management of children and adolescents with familial hypercholesterolaemia. Findings: Of 63 093 individuals in the FHSC registry, 11 848 (18·8%) were children or adolescents younger than 18 years with HeFH and were included in this study; 5756 (50·2%) of 11 476 included individuals were female and 5720 (49·8%) were male. Sex data were missing for 372 (3·1%) of 11 848 individuals. Median age at registry entry was 9·6 years (IQR 5·8-13·2). 10 099 (89·9%) of 11 235 included individuals had a final genetically confirmed diagnosis of familial hypercholesterolaemia and 1136 (10·1%) had a clinical diagnosis. Genetically confirmed diagnosis data or clinical diagnosis data were missing for 613 (5·2%) of 11 848 individuals. Genetic diagnosis was more common in children and adolescents from high-income countries (9427 [92·4%] of 10 202) than in children and adolescents from non-high-income countries (199 [48·0%] of 415). 3414 (31·6%) of 10 804 children or adolescents were index cases. Familial-hypercholesterolaemia-related physical signs, cardiovascular risk factors, and cardiovascular disease were uncommon, but were more common in non-high-income countries. 7557 (72·4%) of 10 428 included children or adolescents were not taking lipid-lowering medication (LLM) and had a median LDL-C of 5·00 mmol/L (IQR 4·05-6·08). Compared with genetic diagnosis, the use of unadapted clinical criteria intended for use in adults and reliant on more extreme phenotypes could result in 50-75% of children and adolescents with familial hypercholesterolaemia not being identified. Interpretation: Clinical characteristics observed in adults with familial hypercholesterolaemia are uncommon in children and adolescents with familial hypercholesterolaemia, hence detection in this age group relies on measurement of LDL-C and genetic confirmation. Where genetic testing is unavailable, increased availability and use of LDL-C measurements in the first few years of life could help reduce the current gap between prevalence and detection, enabling increased use of combination LLM to reach recommended LDL-C targets early in life

    Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV

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    The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe
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