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Genetic parameters in melon sub-accessions from traditional agriculture
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de Amorim, Clisneide C.

; de Queiroz, Manoel A.

; Barbosa, Bárbara L. R.

; Coutinho, Milena dos S.

; Lima Neto, Izaias da S.

Revista Caatinga

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jun 2023, Volume 36 N. 2 Pages 320 - 328

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

ABSTRACT Family farming in Brazil holds a high diversity of melon germplasm, composing an important source of alleles for breeding programs. Thus, the objective of this study was to estimate genetic parameters and select genotypes from a population of melon sub-accessions from different botanical varieties grown by family farmers, based on morphological parameters. Two experiments were conducted, one in 2019 and another in 2020, in a complete randomized block design, with three replications and five plants per plot, using 27 melon sub-accessions (generation S2) from family farmers, and a commercial variety. Nine quantitative descriptors were evaluated. Assumptions of ANOVA were tested, followed by individual and joint analyses of variance. Significant differences were found among sub-accessions for all descriptors evaluated, with heritabilities higher than 83% and significant genotype-environment interactions for 88.8% of the characteristics evaluated. Thus, genetic variability was found among sub-accessions, with predominance of genetic effects over environmental effects, denoting the possibility to obtain genetic gains by the improvement of several characteristics of agronomic interest. The sub-accessions BGMEL66.0, BGMEL111.0, and BGMEL112.0 are recommended for inclusion in breeding programs focused on obtaining good prolificacy and small fruits with high soluble solid contents. BGMEL sub-accessions (108.3 and 108.5) can generate progenies with high prolificacy, and sub-accessions of the variety momordica can be used for generation of progenies focused on shortening the crop cycle and increasing fruit size.

RESUMO A agricultura familiar possui uma grande diversidade de germoplasma de melão, constituindo-se em uma importante fonte de alelos para uso em programas de melhoramento. Assim, o presente estudo objetivou estimar parâmetros genéticos e selecionar genótipos de uma população de subacessos de melão da agricultura familiar pertencentes a diferentes variedades botânicas, com base em caracteres morfológicos. Foram realizados dois experimentos (2019 e 2020), utilizando 27 subacessos de melão (geração S2) provenientes da agricultura familiar e uma variedade comercial, em Delineamento em Blocos Casualizados (DBC) com três repetições e cinco plantas por parcela. Para avaliação foram utilizados nove descritores quantitativos. Inicialmente testou-se as pressuposições da ANOVA e, em seguida, realizou-se a análise de variância individual e a análise conjunta. Com isso, constatou-se diferença significativa entre os subacessos para todos os descritores avaliados, com herdabilidades superiores a 83% e iteração G x A significativa para 88,8% das características avaliadas. Assim, percebeu-se a existência de variabilidade genética entre os subacessos, com predominância dos efeitos genéticos sobre os ambientais, sendo possível obter ganhos genéticos para o melhoramento de várias características de interesse agronômico. Indica-se os subacessos BGMEL66.0, BGMEL111.0 e BGMEL112.0 para serem inseridos em programas de melhoramento visando obter frutos pequenos, com uma boa prolificidade e elevado teor de sólidos solúveis. Já os subacessos BGMEL (108.3 e 108.5) podem fornecer progênies de elevada prolificidade e os subacessos da variedade momordica podem ser utilizados para extração de progênies que visem diminuir o ciclo da cultura e aumentar o tamanho do fruto.

https://doi.org/10.1590/1983-21252023v36n209rc

Parasitological diagnosis in ornamental freshwater fish from different fish farmers of five Brazilian states
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Dominguez, H. N.

; Balian, S. C.

; Relvas, R. S.

; Soares, H. S.

; Queiroz, M. R.

; Martins, M. L.

; Cardoso, P. H. M.

Brazilian Journal of Biology

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2023, Volume 83 elocation e270067

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract This study aimed to search parasites in 333 ornamental fish from five Brazilian states (Ceará, Minas Gerais, São Paulo, Paraná and Santa Catarina). Fish were sent from eight farms located in the municipalities of Fortaleza, Patrocínio do Muriaé, São Francisco do Glória, Cascavel, Timbó, Iguape, Jacareí and Mairinque. All fish received anesthesia earlier to euthanasia procedures. After the search for parasites, it was verified that 70.6% (235/333) of fishes were infected by at least one type of parasite, being 12 types of parasites identified: monogeneans, digenean metacercariae, cestodes, nematodes, Lernaea cyprinacea, trichodinids, Piscinoodinium pillulare, Ichthyophthirius multifiliis, diplomonad flagellates, Ichthyobodo sp., Chilodonella sp., and Tetrahymena sp. The proportion of infected fishes among the farms is compared through statistical tests, besides, animal handling adopted in each farm is also discussed. The importance of ensuring fish health in order to make the ornamental freshwater fish industry economically viable and reduce losses in production is highlighted.

Resumo O objetivo deste estudo foi pesquisar parasitas presentes em 333 peixes ornamentais de cinco estados brasileiros (Ceará, Minas Gerais, São Paulo, Paraná e Santa Catarina). Os peixes eram oriundos de oito pisciculturas localizadas nos municípios de Fortaleza, Patrocínio do Muriaé, São Francisco do Glória, Cascavel, Timbó, Iguape, Jacareí e Mairinque. Todos os peixes foram anestesiados e eutanasiados para a pesquisa de parasitas. Após análise microscópica, foi verificado que 70.6% (235/333) dos peixes estavam infectados por ao menos uma espécie de parasita, sendo identificados 12 tipos: monogenoides, metacercárias, cestoides, nematoides, Lernaea cyprinacea, tricodinídeos, Piscinoodinium pillulare, Ichthyophthirius multifiliis, flagelados diplomonados, Ichthyobodo sp., Chilodonella sp., e Tetrahymena sp. A proporção de peixes infectados entre cada piscicultura é comparada através de testes estatísticos, além disso, o manejo adotado pelas diferentes pisciculturas também é discutido. A importância de assegurar a sanidade de peixes ornamentais, de forma a tornar a atividade economicamente viável e reduzir perdas na produção é enfatizada.

https://doi.org/10.1590/1519-6984.270067

The psyllid fauna (Hemiptera: Psylloidea) of vegetable fields in Brazil
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Kuhn, Taciana M. de A.

; Burckhardt, Daniel

; Queiroz, Dalva L.

; Antolínez, Carlos A.

; Teresani, Gabriela R.

; Lopes, João R. S.

Revista Brasileira de Entomologia

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2023, Volume 67 N. 1 elocation e20220036

Abstract: En | Text: En | PDF: En

ABSTRACT Some psyllids transmit 'Candidatus Liberibacter solanacearum' (Lso), the causal agent of devastating plant diseases of cultivated Solanaceae and Apiaceae. The recent detection of Bactericera cockerelli and Lso in Ecuador seriously threatens these crops in South America. There, neither the role of native psyllids in the Lso epidemiology nor the psyllid fauna of vegetables are known. With the aim to identify potential vectors and risk scenarios for the spread of Lso in South America, a survey of the psyllid fauna of Solanaceae and Apiaceae crops and associated weeds was conducted in Brazil. Samples were taken at 29 localities in four states. A total of 2857 specimens were sampled, representing at least 37 species of 23 genera and seven families. The most frequent species on carrot, chilli pepper and potato were Russelliana solanicola, R. capsici and Isogonoceraia divergipennis, respectively. Immatures of R. capsici were found on chilli pepper and of R. solanicola on carrot and potato, confirming these plants as hosts. The two psyllid species have been suspected previously to transmit plant pathogens of unknown identity. Russelliana solanicola is one of the few polyphagous species. Here the species is reported for the first time from carrot. Recent collections in Rio Grande do Sul suggest that Solanum laxum represents the original host of R. capsici, which subsequently shifted to chilli pepper. Both, adaptation to agricultural crops and the possibility of ability to transmit pathogens, make the two Russelliana species dangerous potential vectors of Lso and other plant pathogens in South America.

https://doi.org/10.1590/1806-9665-rbent-2022-0036

Effects of a low-protein, high-carbohydrate diet administered after weaning and the reversal of that diet in adult rats
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QUEIROZ, THAÍS S.

; ALLEBRANDT NETO, EDGAR W.

; SANTOS, MAÍSA P.

; CORREIA, FRANCYELE S.

; MAGALHÃES, DIEGO A.

; BUZELLE, SAMYRA L.

; PEREIRA, MAYARA P.

; FRANÇA, SUELÉM A.

; KAWASHITA, NAIR H.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Suppl. 1 elocation e20220436

Abstract: En | Text: En | PDF: En

Abstract To evaluate the effects in adults rats submitted of a low-protein, high-carbohydrate (LPHC; 6% protein, 74% carbohydrate) diet and reversion (R) to a balanced diet introduced after weaning. Research methods & procedures: Male rats weigting approximately 100g (30 to 32 d old) were treated with control (C; 17% protein, 63% carbohydrate) or LPHC diets for 120 days. The reverse group (R) was treated with the LPHC diet for 15 days, and changed to C diet for another 105 days. Results: The LPHC group showed an increase in serum fasting triglycerides (TAG). Serum adiponectin was increased only in the LPHC group. Lipoprotein lipase (LPL) activity was decreased in the extensor digitorum longus (EDL) and cardiac muscles. The adiponectin receptor 1 content is the same among groups in the cardiac muscle, but it is lower in the EDL muscle in the LPHC group. In animals from the R group, these parameters are the same as the LPHC group. Thus, the LPHC diet administered for a long period, it promotes an increase in TAG. It is possible that there is adiponectin resistance in the EDL muscle, due to the lower LPL activity. The reversal of the LPHC diet did not normalize these parameters.

https://doi.org/10.1590/0001-3765202320220436

Produção e efeito da germinação em sementes de jaca: caracterização química, física e físico-química
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Silva, Luís P. F. R. da

; Queiroz, Alexandre J. M.

; Figueirêdo, Rossana M. F.

; Campos, Ana Regina N.

; Matos, Joana D. P. de

; Moraes, Maria Suiane de

; Silva, Semirames do N.

; Gonçalves, Mailson G.

; Mascarenhas, Nágela M. H.

; Medeiros Neto, Moises S. de

; Rodrigues, Larissa M. S.

; Vieira, Agdylannah F.

; Costa, Zanelli R. T.

; Moura, Rodrigo L.

Revista de Ciências Agrárias

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jun 2022, Volume 45 N. 1-2 Pages 51 - 60

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Jackfruit is an exotic fruit present in the Northeast region of Brazil, presenting a great economic potential for the region because of the internal and external commercialization of its fruit. Its seed is rich in carbohydrates, protein, minerals and vitamins, and is an alternative source of starch and for food. Germination is an easily accessible, inexpensive technology for the production of sprouts, improving the bioavailability of nutrients in the seed for consumption, such as proteins and bioactive compounds. The objective of this work was to evaluate the chemical, physical and physicochemical parameters of fresh and germinated jackfruit seeds. The germination of jackfruit seeds increased the contents of water, proteins, ascorbic acid, phenolic compounds and total sugars, in addition to reducing the content of starch, lipids, tannins and the parameters of color, luminosity, red (+ a*) and yellow (+b*) intensities. In relation to the physical properties of the seed, there was an increase in the real specific mass and in the unit mass. For apparent specific mass there was a reduction. Seed germination provided an increase in the levels of magnesium, iron and sodium, consequently reducing potassium, phosphorus, calcium, zinc, copper and manganese.

Resumo A jaca é um fruto exótico presente na região Nordeste do Brasil, apresentando um grande potencial econômico para região em face da comercialização interna e externa do seu fruto. Sua semente é rica em carboidratos, proteína, minerais e vitaminas, constituindo fonte alternativa de amido para alimentação. A germinação é uma tecnologia barata de fácil acesso para produção de brotos, melhorando a biodisponibilidade de nutrientes na semente para o consumo, a exemplo das proteínas e compostos bioativos. O objetivo do trabalho foi avaliar os parâmetros químicos, físicos e físico-químicos das sementes de jaca in natura e germinadas. A germinação das sementes de jaca proporcionou o aumento nos teores de água, proteínas, ácido ascórbico, compostos fenólicos e açúcares totais, além de reduzir os conteúdo de amido, lipídios, taninos e os parâmetros de cor, a luminosidade, intensidade de vermelho (+a*) e de amarelo (+b*). Em relação às propriedades físicas da semente, ocorreu acréscimo na massa específica real e na massa unitária. Para massa específica aparente houve redução. A germinação das sementes proporcionou aumento nos teores de magnésio, ferro e sódio, consequentemente ocorrendo redução de potássio, fósforo, cálcio, zinco, cobre e manganês.

https://doi.org/10.19084/rca.25988

Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting
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TORRES, ANA LAURA R.

; PARISE, CLAUDIA K.

; PEZZI, LUCIANO P.

; QUEIROZ, MICHELLY G. DOS SANTOS

; MACHADO, ADILSON M.B.

; CERVEIRA, GABRIEL S.

; CORREIA, GUSTAVO S.

; BARBOSA, WESLEY L.

; LIMA, LEONARDO G. DE

; SUTIL, UESLEI A.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Suppl. 1 elocation e20210800

Abstract: En | Text: En | PDF: En

Abstract The formation of dense water masses at polar regions has been largely influenced by climate changes arising from global warming. In this context, based on ensemble simulations with a coupled model we evaluate the meridional shift of a climate signal (i.e., a cold and fresh water input pulse generated from melting of positive Antarctic sea ice (ASI) extremes) towards the Tropical Atlantic Ocean (TAO). This oceanic signal propagated from Southern Ocean towards the equator through the upper layers due to an increase in its buoyance. Its northward shift has given by the Subantarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW) flows, that inject cold and fresh mode/intermediate waters from into subtropical basin. The signal has reached low latitudes through the equatorial upwelling and spreads out southwards, through the upper branch of southern subtropical gyre. We concluded that 10 years of coupled simulations was enough time to propagate the climate signal generated by ASI positive extremes melting, which reached TOA around 2 year later. The oceanic connection between Southern Ocean and TAO is indeed established within the timescale analyzed in the study (10 years). Nonetheless, the period needed to completely dissipate the disturbance generated from ASI seems to be longer.

https://doi.org/10.1590/0001-3765202220210800

SOIL PHOSPHORUS TEST USING A LOW-COST SPECTROPHOTOMETER AND MACHINE LEARNING
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Mayrink, Grégory O.

; Queiroz, Daniel M. de

; Coelho, Andre L. de F.

; Valente, Domingos S. M.

Engenharia Agrícola

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2022, Volume 42 N. 6 elocation e20210228

Abstract: En | Text: En | PDF: En

ABSTRACT Phosphorus concentration is one of the main attributes determined in laboratory analyses of soil samples collected in the field. The objective is to develop a soil phosphorus test using a low-cost spectrophotometer and a machine learning technique. For reflectance measurements, a low-cost system consisting of a Sparkfun AS7625x spectrophotometer and an Arduino Uno is used. Ion exchange resins under standard saturated solutions and modified conditions are used to extract phosphorus ions from the soil samples. Reflectance and phosphorus concentrations determined by the reference method are used in the training and testing of a machine learning. A modification procedure of the ion-exchange resin saturation solution allows the establishment of a strong correlation between the reflectance in 18 spectral bands and P concentration of the soil samples. The obtained model uses five reflectance of the modified resins at wavelengths of 410, 460, 560, 705, and 645 nm to predict the phosphorus concentration. This model presents an R2t accuracy of 0.97 in the training stage with an R2v of 0.96, RMSEv of 9.05, and ratio of prediction to deviation) of 3.81 in the test step.

https://doi.org/10.1590/1809-4430-eng.agric.v42n6e20210228/2022

Differentials in death count records by databases in Brazil in 2010
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Diógenes, Victor Hugo Dias

; Pinto Júnior, Elzo Pereira

; Gonzaga, Marcos Roberto

; Queiroz, Bernardo Lanza

; Lima, Everton E. C.

; Costa, Lilia Carolina C. da

; Rocha, Aline S.

; Ferreira, Andrêa J. F.

; Teixeira, Camila S. S.

; Alves, Flávia Jôse O.

; Rameh, Leila

; Flores-Ortiz, Renzo

; Leyland, Alastair

; Dundas, Ruth

; Barreto, Maurício L.

; Ichihara, Maria Yury Travassos

Revista de Saúde Pública

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2022, Volume 56 elocation 92

Abstract: En | Text: En | PDF: En

ABSTRACT OBJECTIVE To compare the death counts from three sources of information on mortality available in Brazil in 2010, the Mortality Information System (SIM - Sistema de Informações sobre Mortalidade ), Civil Registration Statistic System (RC - Sistema de Estatísticas de Resgistro Civil ), and the 2010 Demographic Census at various geographical levels, and to confirm the association between municipal socioeconomic characteristics and the source which showed the highest death count. METHODS This is a descriptive and comparative study of raw data on deaths in the SIM, RC and 2010 Census databases, the latter held in Brazilian states and municipalities between August 2009 and July 2010. The percentage of municipalities was confirmed by the database showing the highest death count. The association between the source of the highest death count and socioeconomic indicators - the Índice de Privação Brasileiro (IBP – Brazilian Deprivation Index) and Índice de Desenvolvimento Humano Municipal (IHDM – Municipal Human Development Index) - was performed by bivariate choropleth and Moran Local Index of Spatial Association (LISA) cluster maps. RESULTS Confirmed that the SIM is the database with the highest number of deaths counted for all Brazilian macroregions, except the North, in which the highest coverage was from the 2010 Census. Based on the indicators proposed, in general, the Census showed a higher coverage of deaths than the SIM and the RC in the most deprived (highest IBP values) and less developed municipalities (lowest IDHM values) in the country. CONCLUSION The results highlight regional inequalities in how the databases chosen for this study cover death records, and the importance of maintaining the issue of mortality on the basic census questionnaire.

https://doi.org/10.11606/s1518-8787.2022056004282

Differentials in death count records by databases in Brazil in 2010
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Diógenes, Victor Hugo Dias

; Pinto Júnior, Elzo Pereira

; Gonzaga, Marcos Roberto

; Queiroz, Bernardo Lanza

; Lima, Everton E. C.

; Costa, Lilia Carolina C. da

; Rocha, Aline S.

; Ferreira, Andrêa J. F.

; Teixeira, Camila S. S.

; Alves, Flávia Jôse O.

; Rameh, Leila

; Flores-Ortiz, Renzo

; Leyland, Alastair

; Dundas, Ruth

; Barreto, Maurício L.

; Ichihara, Maria Yury Travassos

Revista de Saúde Pública

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2022, Volume 56 elocation 92

Abstract: En | Text: En | PDF: En

https://doi.org/10.11606/s1518-8787.2022056004282

10.

SPATIAL VARIABILITY OF SOIL APPARENT ELECTRICAL CONDUCTIVITY - EFFECT OF THE NUMBER OF SUBSAMPLES
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Sousa, Emanoel Di Tarso dos S.

; Queiroz, Daniel M. de

; Rosas, Jorge T. F.

; Nascimento, Amélia L. do

Engenharia Agrícola

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may 2021, Volume 41 N. 3 Pages 396 - 401

Abstract: En | Text: En | PDF: En

ABSTRACT Soil apparent electrical conductivity (ECa) sensors have been used to detect spatial variability because they correlate with soil attributes. Studies with soil attributes have shown that the number of subsamples and sampling points influences mapping. However, there are no studies that investigated the influence of sampling or subsampling density on ECa maps. Therefore, this study verified the influence of ECa readings per sample point on the semivariance and kriging analysis. The data were collected from an area (2.5 ha) of coffee plants. One hundred sampling points were measured considering 20 readings each. 1, 5, 10, 15, and 20 sample point readings were tested. The influence of the number of readings per sampling point on the ECa mapping was determined using linear regression analysis at a significance level of 5%. The results obtained showed that ECa readings per sampling point significantly influence ECa maps. In addition, they demonstrated that reducing the number of readings per sampling point increases prediction errors by kriging. Thus, ECa maps determined with the highest readings per sampling point were mostly accurate.

https://doi.org/10.1590/1809-4430-eng.agric.v41n3p396-401/2021 132 downloads

11.

Modelagem matemática e propriedades termodinâmicas na secagem do quiabo
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Santos*, Francislaine S.

; Figueirêdo, Rossana M. F.

; Queiroz, Alexandre J. M.

; Reis, Carolaine G.

; Amadeu, Lumara T. S.

; Silva, Luis P. F. R.

; Lima, Thalis L. B.

Revista de Ciências Agrárias

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mar 2021, Volume 44 N. 1 Pages 91 - 100

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O quiabo é uma hortaliça que destaca-se agronomicamente por apresentar ciclo vegetativo rápido, de alto rendimento, além de apresentar considerável valor nutritivo. Em razão da sua composição e de ser consumido ainda verde, a sua vida útil é bastante curta, requerendo algum processo de conservação para manter a aceitabilidade. Nesse sentido, objetivou-se secar o quiabo em fatias, com espessura de aproximadamente 2 mm, nas temperaturas de 50, 60, 70 e 80 °C, ajustar modelos matemáticos aos dados experimentais e determinar os coeficientes de difusão, a energia de ativação e as propriedades termodinâmicas. Observou-se que o aumento de temperatura de secagem em 30 °C reduziu em 50,55% o tempo total de processo. Dentre os modelos matemáticos testados, o modelo de Midilli apresentou os melhores parâmetros de ajustes aos dados experimentais. Os coeficientes de difusão efetivos aumentaram com o incremento da temperatura, apresentando-se na ordem de 10-11 m2 s-1, e sua dependência com a temperatura foi descrita pela Equação de Arrhenius, que indicou uma energia de ativação de 26,12 kJ mol-1. Os valores de entalpia e entropia se reduziram com a elevação da temperatura de secagem, enquanto que a energia livre de Gibbs foi aumentada na faixa de temperatura avaliada.

ABSTRACT Okra is a vegetable that stands out agronomically due to its fast vegetative cycle, of high yield, besides presenting considerable nutritional value. Due to its composition and to be consumed still green, its useful life is quite short, requiring some conservation process to maintain acceptability. In this sense, the objective was to dry the okra in slices, approximately 2 mm thick, at temperatures of 50, 60, 70 and 80 ° C, adjust mathematical models to the experimental data and determine the diffusion coefficients, activation energy and thermodynamic properties. It was observed that the increase in drying temperature at 30 ° C reduced the total process time by 50.55%. Among the mathematical models tested, the Midilli model presented the best parameters of adjustments to the experimental data. The effective diffusion coefficients increased with increasing temperature, in the order of 10-11 m2 s-1, and their dependence on temperature was described by the Arrhenius Equation, which indicated an activation energy of 26.12 kJ mol-1. The enthalpy and entropy values decreased with the increase of the drying temperature, while the Gibbs free energy was increased in the temperature range evaluated.

https://doi.org/10.19084/rca.21469 4 downloads

12.

Exploratory analysis of trace elements in soils and plants affected by a gossan in the Semiarid
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Arévalo-Hernández, César O.

; Nascimento Junior, Adailton L.

; Queiroz, Arlicelio P.

; Gross, Eduardo

; Souza, Luciano da S.

Revista Brasileira de Engenharia Agrícola e Ambiental

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feb 2021, Volume 25 N. 2 Pages 139 - 145

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Elementos-traços em altas concentrações são um grande problema a nível mundial. O monitoramento de áreas naturais com alta concentração destes elementos, como solos sob influência de gossans, é importante, por existir pouca informação disponível. Objetivou-se neste trabalho avaliar as concentrações pseudototais e disponíveis de Fe, Mn, Pb e Zn no solo e seu acúmulo em plantas nativas e cultivadas na área sob influência de gossan no semiárido no Brasil. Amostras de solo (0-20 cm) foram coletadas no norte, sul e área central do gossan e em cinco transecções separadas em 1000 m. Determinou-se a concentração pseudototal (EPA3050A) e disponível (DTPA, Mehlich) de Fe, Mn, Pb e Zn. Nos mesmos pontos, amostras de plantas foram coletadas e processadas para determinação da concentração e fator de bioconcentração de Fe, Mn, Pb e Zn. Os solos sob influência do gossan apresentaram alta concentração de Pb e Zn (excedendo os valores de referência de qualidade), indicando que cuidados devem ser tomados nessas áreas para evitar qualquer risco para a comunidade local. As plantas apresentaram diferentes padrões de acumulação, com maior acúmulo de elementos-traço na parte aérea (Fe, Mn, Zn), enquanto o Pb foi acumulado principalmente nas raízes. Embora as concentrações no solo fossem altas, as plantas apresentaram, em geral, baixo fator de bioconcentração dos potenciais elementos tóxicos, com exceção do Zn, indicando que as condições do solo limitam sua disponibilidade.

ABSTRACT Trace elements in high concentrations are a huge problem worldwide. Monitoring of natural areas with a high concentration of these elements, such as soils under the influence of gossans, is important since there is little information available. This study aimed to evaluate the pseudo total and available concentrations of Fe, Mn, Pb, and Zn in the soil and its accumulation in native and cultivated plants in the area under the influence of gossan in the Semiarid region in Brazil. Soil samples (0-20 cm) were collected in the North, South, and center areas of the gossan and five transections separated by 1000 m. The pseudo total (EPA3050A) and available concentration (DTPA, Mehlich) of Fe, Mn, Pb, and Zn were determined. In the same points, plant samples were collected and processed to determine the concentration and bioconcentration factor of Fe, Mn, Pb, and Zn. Soils under the influence of the gossan had high Pb and Zn concentration (exceeding soil reference values), indicating that care should be taken in these areas to prevent any risk for the local community. Plants showed different accumulation patterns, with a higher accumulation of trace elements in the shoot (Fe, Mn, Zn), while Pb was primarily accumulated in the roots. Even though soil concentrations were high, plants showed in general, low bioconcentration factor of the potentially toxic elements, except for Zn, indicating that soil conditions limit their availability.

https://doi.org/10.1590/1807-1929/agriambi.v25n2p139-145 432 downloads

13.

Fish-food interaction network around cage fish farming in a neotropical reservoir
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Brandão, Heleno

; Lange, Denise

; Blanco, Daniel Rodrigues

; Ramos, Igor Paiva

; Sousa, Jamile Queiroz de

; Nobile, André Batista

; Carvalho, Edmir Daniel

Acta Limnologica Brasiliensia

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2021, Volume 33 elocation e18

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: Objetivo Nós verificamos se peixes selvagens se alimentam de ração residual proveniente de piscicultura em tanques-rede, alterando a dieta e a rede de interação peixe-alimento. Métodos Foram avaliadas as dietas de Astyanax lacustris, Iheringichthys labrosus, Leporinus amblyrhynchus, Schizodon nasutus e Steindachnerina insculpta do Reservatório Chavantes, Bacia do Alto Paraná. Os peixes foram coletados mensalmente de março de 2008 a fevereiro de 2009 ao redor da área de piscicultura (net cage - NC) e em uma área de referência (reference site – RS), sem a influência das atividades de piscicultura. Nós verificamos os resultados usando gráficos e métricas da análise de redes complexas e análise de variância permutacional. Resultados Foram coletados 641 indivíduos das cinco espécies de peixes, 292 na área NC e 349 na RS. No total 24 itens alimentares foram consumidos pelos peixes em NC e 22 em RS. A rede de interação peixe-alimento apresentou padrão aninhado nas duas áreas avaliadas, demonstrando a estrutura generalista desta interação. Os valores de conectância e grau médio da rede de interação foram baixos. Detrito foi o item mais consumido nas duas áreas avaliadas. Três das cinco espécies avaliadas (A. lacustris, S. nasutus e I. labrosus) tiveram ração residual em suas dietas. Ração foi o quarto item mais consumido na área NC, sendo o mais frequente em indivíduos de A. lacustris e S. nasutus. Conclusões Os nossos resultados mostram que a atividade de piscicultura usando tanques-rede pode influenciar as interações tróficas dos sistemas aquáticos, bem como, demonstram a habilidade de S. nasutus, L. labrosus e A. lacustris em consumirem o novo item alimentar inserido no ambiente.

Abstract: Aim Investigating whether wild fish accept residual ration from cage fish farming to the point of changing their diet and the fish-food interaction network. Methods The diet of fish species, Astyanax lacustris, Iheringichthys labrosus, Leporinus amblyrhynchus, Schizodon nasutus and Steindachnerina insculpta, bred in Chavantes Reservoir, Upper Paraná basin, was evaluated. Samples were collected on a monthly basis - from March 2008 to February 2009 - around the cage fish farming (NC) and in a reference site (RS) free from the influence of the fish farming activity. Results were analyzed through graphs and metrics of complex network analysis, and Permutational analysis of variance. Results The total number of 641 individuals belonging to all five fish species were collected, 292 in NC and 349 in RS. The total amount of food items consumed by them comprised 24 items in NC and 22 items in RS. The fish-food interaction network has shown nested pattern in the two evaluated areas, which evidenced the generalist structure of this interaction. Connectance values and mean degree of interaction networks were low. Detritus was the most representative item consumed in both sampling sites. Three of the five evaluated species (A. lacustris, S. nasutus and I. labrosus) had residual ration in their diet. Residual ration was the fourth most consumed item in NC. It was also the most representative food item for A. lacustris and S. nasutus. Conclusions Results have shown that cage fish farming activity can influence trophic interactions in aquatic systems, as well as evidenced the ability of S. nasutus, L. labrosus and A. lacustris to take advantage of new food items in their environment.

https://doi.org/10.1590/s2179-975x10919 7 downloads

14.

Poor Sleep quality and health-related quality of life impact in adolescents with and without chronic immunosuppressive conditions during COVID-19 quarantine
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Helito, Alberto C.

; Lindoso, Livia

; Sieczkowska, Sofia M.

; Astley, Camilla

; Queiroz, Ligia B.

; Rose, Natalia

; Santos, Claudia Renata P.

; Bolzan, Thalis

; Peralta, Rita María I.A.

; Franco, Ruth R.

; Cominato, Louise

; Pereira, Rosa Maria R.

; Tannuri, Uenis

; Campos, Lucia Maria A.

; Lourenço, Benito

; Toma, Ricardo K.

; Medeiros, Karina

; Watanabe, Andréia

; Grangeiro, Patricia Moreno

; Farhat, Sylvia C.

; Casella, Caio B.

; Polanczyk, Guilherme V.

; Gualano, Bruno

; Silva, Clovis A.

; Sallum, Adriana M. E.

; Iraha, Amanda Y.

; Ihara, Bianca P.

; Mazzolani, Bruna C.

; Martinez, Claudia A.

; Strabelli, Claudia A. A.

; Fonseca, Claudia B.

; Lima, Dandara C. C.

; Setoue, Debora N. D.

; Roz, Deborah F. P.

; Smaira, Fabiana I.

; Roschel, Hamilton

; Miyatani, Helena T.

; Marques, Isabela G.

; Oba, Jane

; Ferreira, Juliana C. O.

; Simon, Juliana R.

; Kozu, Katia

; Saccani, Ligia P.

; Martiniano, Lorena V. M.

; Miranda, Luana C. A.

; Silva, Luiz E. V.

; Laurentino, Moisés F.

; Aikawa, Nadia E.

; Sakita, Neusa K.

; Tanigava, Nicolas Y.

; Pereira, Paulo R. A.

; Palmeira, Patrícia

; Angelo, Simone S.

; Lavorato, Sofia S. M.

; Bernardes, Tamires M.

; Franco, Tathiane C.

; Viana, Vivianne S. L.

; Barros, Vera P. M. F. R.

; Zheng, Yingying

Clinics

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2021, Volume 76 elocation e3501

Abstract: En | Text: En | PDF: En

OBJECTIVE: To assess the possible factors that influence sleep quality in adolescents with and without chronic immunosuppressive conditions quarantined during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: This cross-sectional study included 305 adolescents with chronic immunocompromised conditions and 82 healthy adolescents. Online surveys were completed, which included questions on socio-demographic data and self-rated healthcare routine during COVID-19 quarantine and the following validated questionnaires: the Pittsburgh Sleep Quality Index (PSQI), Pediatric Quality of Life Inventory 4.0 (PedsQL4.0), and Pediatric Outcome Data Collection Instrument (PODCI). RESULTS: The median current age [14 (10-18) vs. 15 (10-18) years, p=0.847] and frequency of female sex (62% vs. 58%, p=0.571) were similar in adolescents with chronic conditions compared with healthy adolescents. The frequency of poor sleep quality was similar in both groups (38% vs. 48%, p=0.118). Logistic regression analysis, including both healthy adolescents and adolescents with chronic conditions (n=387), demonstrated that self-reported increase in screen time (odds ratio [OR] 3.0; 95% confidence interval [CI] 1.3-6.8; p=0.008) and intrafamilial violence report (OR 2.1; 95% CI 1.2-3.5; p=0.008) were independently associated with poor sleep quality in these adolescents. However, the PODCI global function score was associated with a lower OR for poor sleep quality (OR 0.97; 95% CI 0.94-0.99; p=0.001). Further logistic regression, including only adolescents with chronic conditions (n=305), demonstrated that self-reported increase in screen time (OR 3.1; 95% CI 1.4-6.8; p=0.006) and intrafamilial violence report (OR 2.0; 95% CI 1.2-3.4; p=0.011) remained independently associated with poor quality of sleep, whereas a lower PODCI global function score was associated with a lower OR for sleep quality (OR 0.96; 95% CI 0.94-0.98; p<0.001). CONCLUSION: Self-reported increases in screen time and intrafamilial violence report impacted sleep quality in both healthy adolescents and those with chronic conditions. Decreased health-related quality of life was observed in adolescents with poor sleep quality.

https://doi.org/10.6061/clinics/2021/e3501

15.

Phenotypic adaptability and stability of herbaceous cotton genotypes in the Semiarid region of the Northeast of Brazil
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Silva, Ruan dos S.

; Farias, Francisco J. C.

; Teodoro, Paulo E.

; Cavalcanti, José J. V.

; Carvalho, Luiz P. de

; Queiroz, Damião R.

Revista Brasileira de Engenharia Agrícola e Ambiental

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dec 2020, Volume 24 N. 12 Pages 800 - 805

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A cultura do algodoeiro (Gossypium hirsutum L.) na região do Nordeste brasileiro é submetida a alta variabilidade edafoclimática, o que contribui para a ocorrência de forte interação genótipo versus ambiente (G x A). Nessa situação, faz-se necessário o uso de metodologias de adaptabilidade e estabilidade para o estudo da interação G x A antes da seleção e recomendação de cultivares. Dentre estas, a análise genótipo + G x E (GGE) biplot se destaca como uma das mais recomendadas e usadas atualmente. O objetivo deste estudo foi avaliar a interação genótipo versus ambiente (G × A) de linhagens finais de algodoeiro por meio da metodologia GGE biplot, visando identificar genótipos adaptados e estáveis para as condições do semiárido nordestino. Foram conduzidos quatro ensaios de valor de cultivo e uso nas cidades de Apodi, RN, e Barbalha, CE, Brasil, nos anos de 2016 e 2017. O delineamento experimental foi de blocos casualizados, com 17 tratamentos e quatro repetições. Os tratamentos foram constituídos de 17 genótipos de algodoeiro. As variáveis avaliadas foram: produtividade de algodão em caroço e produtividade de fibra. A análise identificou as linhagens CNPA BA 2011-4436, CNPA BA 2011-1197 e CNPA BA 2010-1174 como estáveis e com ampla adaptabilidade para a região avaliada.

ABSTRACT Cotton (Gossypium hirsutum L.) crop areas in the Northeast region of Brazil present high edaphoclimatic variability, which contributes to a strong genotype versus environment interaction (G × E). This situation requires the use of adaptability and stability methodologies to study G × E interaction before the selection and recommendation of cultivars. Among these methodologies, the genotype + G × E (GGE) biplot analysis has been currently used and highly recommended. Thus, the objective of this study was to evaluate the G × E of cotton genotypes through GGE biplot analysis, focusing on the identification of adapted and stable genotypes for the Semiarid region of the Northeast of Brazil. Four crop value and use tests were conducted in the municipalities of Apodi, state of Rio Grande do Norte, and Barbalha, state of Ceará, Brazil, in 2016 and 2017. A randomized block experimental design, with 17 treatments and four repetitions, was used. The treatments consisted of 17 cotton genotypes. The variables evaluated were: cotton seed and fiber yields. According to the analysis, the genotypes CNPA BA 2011-4436, CNPA BA 2011-1197, and CNPA BA 2010-1174 were stable and presented high adaptability to the evaluated region.

https://doi.org/10.1590/1807-1929/agriambi.v24n12p800-805 419 downloads

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