Incidence des spores fongiques de l鈥檃ir de T茅touan (NW du Maroc) et influence des param猫tres m茅t茅orologiques
详细信息    查看全文
文摘

Fungal spores are known to cause rhinitis and asthma and are playing an increasingly important role in respiratory allergy. The aim of this work was to analyse the airborne fungal spores in the atmosphere of Tetouan, Morocco during 2009, 2010 and 2012, to determine their diversity and abundance, their seasonal and annual variations, and the effect of meteorological parameters on the concentration of these spores. Aerobiological sampling was performed using Burkard volumetric spore traps located on the flat roof of the biology department of the Tetouan faculty of sciences. The preparation, mounting and counting of microscopic slides was done according to methods recommended by the Spanish Aerobiological Network (REA). Daily mean concentrations were expressed as the number of spores per cubic metre of air. The Spearman correlation coefficient was used to analyse the influence of meteorological parameters on the daily incidence of these spores. More than 80 types of fungal spores were identified and the annual spore load varied between 474,867 in 2009 and 615,193 in 2012. The principal taxa accounted for approximately 99.50% of the annual total, the most abundant being Cladosporium, Basidiospores, Ustilago, Alternaria, Leptosphaeria, Aspergillaceae, Uredospores and Pleospora. The highest incidence of most spores occurred during the spring and autumn months, although some were less abundant in the summer months. Alternaria, Cladosporium, Stemphylium, and Ustilago spore counts correlated positively and very significantly positive with the temperature. With the exception of Cladosporium, humidity and rainfall had a negative influence on most of these spores. Ascospores and basidiospores generally correlated negatively with the temperature at a significant to highly significant level, while they correlated positively with humidity and rainfall at a significant to highly significant level. The annual spore levels we observed were within the range or superior to those reported by other authors, depending on the region, the period and the taxa studied. Exposure of pre-sensitized individuals to high fungal spore concentrations can be the cause of respiratory allergic diseases.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700