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Monitorização de esporos de fungos em Lisboa, 2014 -2016
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Advisor(s)
Abstract(s)
Objetivo: Avaliar a distribuição dos esporos de fungos potencialmente alergizantes em Lisboa no triénio 2014 -2016,
caracterizar a sua prevalência na atmosfera e estudar a influência dos fatores meteorológicos nas suas concentrações.
Métodos: Monitorizaram -se os esporos de fungos presentes no ar atmosférico de Lisboa entre 1 de janeiro de 2014
e 31 de dezembro de 2016. A amostragem foi efetuada através um captador Burkard Seven Day Volumetric Spore -trap®.
Para identificação e quantificação de esporos de fungos recorreu -se a um sistema de leitura ao microscópio ótico
baseado na análise de uma linha longitudinal ao centro da lâmina com uma ampliação de 600x. A influência dos factores meteorológicos sobre as concentrações dos esporos foi realizada pela análise da correlação de Spearman. Resultados: Neste estudo obteve -se uma concentração média diária de 3118 esporos/m3 de ar. A concentração anual total
de esporos de fungos de 2014 foi a mais elevada (1 258 580 esporos/m3 de ar). Os tipos de esporos com maior prevalência na atmosfera de Lisboa foram Cladosporium cladosporoides (48,2%), Coprinus (4,5%), Leptosphaeria (2,5%), Agaricus
(2,0%), Cladosporium herbarum (1,9%), Ustilago (1,5%) e Alternaria (1,2%). As concentrações mais elevadas registaram -se
nos meses de verão e outono. Constatou -se um claro efeito dos parâmetros meteorológicos sobre as concentrações
dos esporos de fungos. A temperatura média apresentou uma correlação positiva com a concentração total de esporos Cladosporium, Alternaria e Ustilago e negativa com Coprinus, Agaricus e Leptosphaeria. A humidade relativa e a precipitação, relacionadas com a concentração total de esporos fúngicos, tiveram um efeito positivo significativo sobre os níveis de Coprinus, Agaricus e Leptosphaeria, apresentando uma correlação negativa com os níveis de Cladosporium, Alternaria e Ustilago. Conclusão: Este estudo permitiu conhecer o tipo e a distribuição dos esporos de fungos presentes na atmosfera de Lisboa. Verificou -se uma tendência sazonal semelhante nos três anos estudados. Os níveis de
esporos de fungos mais elevados foram registados no verão e no outono. O género Cladosporium representou 50%
do total dos esporos coletados. A variação dos parâmetros meteorológicos influencia, claramente, as concentrações
dos esporos de fungos. A temperatura média foi o fator que exerceu maior influência nos níveis de esporos.
Objectives: To evaluate the distribution of potentially allergenic spores in the city of Lisbon in the triennium 2014- -2016, to charactere its prevalence in the outdoor atmosphere and to study the influence of the meteorological factors on the concentrations. Methodology: Monitoring data from the Lisbon station of the Portuguese Aerobiology Network of fungal spores from 1 January 2014 to 31 December 2016 were analyzed. A Burkard Seven Day Volumetric Spore -trap® collector and optical microscope reading system based on the analysis of a longitudinal line at the center of the slide with a magnification of 600x were used. The influence of the meteorological factors on the concentrations of fungal spores was examined with the Spearman correlation analysis. Results: In this study, a mean daily concentration of 3.118 spore fungal/ m3 spores was obtained. The highest annual concentration observed was in 2014 (1.258.580 spore fungal/m3). The most abundant types of fungi spores were Cladosporium cladosporoides (48,2%), Coprinus (4,5%), Leptosphaeria (2,5%), Agaricus (2,0%), Cladosporium herbarum (1,9%), Ustilago (1,5%) and Alternaria (1,2%). The highest concentrations of fungal spores occurred in the summer and autumn months, being particularly highest in the autumn. A clear effect of meteorological factors on the fungal spores concentrations was observed. The mean temperature presented a positive correlation with total spores, Cladosporium, Alternaria and Ustilago concentrations and a negative correlation with Coprinus, Agaricus and Leptosphaeria levels. Relative humidity and precipitation had a positive effect with Coprinus, Agaricus and Leptosphaeria concentrations but negative with total spores, Cladosporium, Alternaria and Ustilago concentrations. Conclusions: This study allowed to know the type and the distribution of fungal spores present in the atmosphere of Lisbon. There was a similar seasonal trend in the three years studied. The highest levels of fungal spores were recorded in summer and autumn. The genus Cladosporium represented 50% of the total spores collected. The variation of the meteorological parameters clearly influences the concentrations of fungal spores. The mean temperature was the factor that exerted the greatest influence on the spore levels.
Objectives: To evaluate the distribution of potentially allergenic spores in the city of Lisbon in the triennium 2014- -2016, to charactere its prevalence in the outdoor atmosphere and to study the influence of the meteorological factors on the concentrations. Methodology: Monitoring data from the Lisbon station of the Portuguese Aerobiology Network of fungal spores from 1 January 2014 to 31 December 2016 were analyzed. A Burkard Seven Day Volumetric Spore -trap® collector and optical microscope reading system based on the analysis of a longitudinal line at the center of the slide with a magnification of 600x were used. The influence of the meteorological factors on the concentrations of fungal spores was examined with the Spearman correlation analysis. Results: In this study, a mean daily concentration of 3.118 spore fungal/ m3 spores was obtained. The highest annual concentration observed was in 2014 (1.258.580 spore fungal/m3). The most abundant types of fungi spores were Cladosporium cladosporoides (48,2%), Coprinus (4,5%), Leptosphaeria (2,5%), Agaricus (2,0%), Cladosporium herbarum (1,9%), Ustilago (1,5%) and Alternaria (1,2%). The highest concentrations of fungal spores occurred in the summer and autumn months, being particularly highest in the autumn. A clear effect of meteorological factors on the fungal spores concentrations was observed. The mean temperature presented a positive correlation with total spores, Cladosporium, Alternaria and Ustilago concentrations and a negative correlation with Coprinus, Agaricus and Leptosphaeria levels. Relative humidity and precipitation had a positive effect with Coprinus, Agaricus and Leptosphaeria concentrations but negative with total spores, Cladosporium, Alternaria and Ustilago concentrations. Conclusions: This study allowed to know the type and the distribution of fungal spores present in the atmosphere of Lisbon. There was a similar seasonal trend in the three years studied. The highest levels of fungal spores were recorded in summer and autumn. The genus Cladosporium represented 50% of the total spores collected. The variation of the meteorological parameters clearly influences the concentrations of fungal spores. The mean temperature was the factor that exerted the greatest influence on the spore levels.
Description
Keywords
Aerobiologia Esporos de fungos Fatores meteorológicos Lisboa (Portugal) Aerobiology Climate parameters Fungal spores Lisbon (Portugal) . Faculdade de Ciências da Vida
Citation
Ferro, Raquel, Nunes, Carlos, Camacho, Irene, Paiva, Miguel, & Morais-Almeida, Mário. (2019). Monitorização de esporos de fungos em Lisboa, 2014-2016. Revista Portuguesa de Imunoalergologia, 27(1), 29-39. https://dx.doi.org/10.32932/rpia.2019.03.004