Seasonal variation of fungal spore populations in the atmosphere of Zarqa area,Jordan |
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Authors: | Mohammed H Abu-Dieyeh Raghda Barham Khaled Abu-Elteen Radhi Al-Rashidi Inaam Shaheen |
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Institution: | (1) Department of Biology and Biotechnology, The Hashemite University, P.O. Box 150459, Zarqa, 13115, Jordan;(2) Department of Land Management and Environment, The Hashemite University, P.O. Box 150459, Zarqa, 13115, Jordan;(3) Present address: 4799 Rue Jolicoeur #10, Pierrefonds, QC, H9H 5M7, Canada |
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Abstract: | Fungi are among the most important aeroallergens. The aim of this study was to provide aeromycological baseline information
about Zarqa area, Jordan, for the first time. During the entire survey and from 170 settle plate exposures, a total of 735
mould- and 274 yeast colony-forming units (CFU) were collected. mould colonies were assigned to 35 genera and 59 species.
The highest abundance was attributed to Cladosporium with a percentage of 29.1% of the total colony count followed by Fusarium 20%, Alternaria 7.7%, Ulocladium 6.5% Penicillium 4.2% and then Aspergillus 3.6%. Cladosporium showed one peak in October while Aspergillus and Penicillium peaked in September. Fusarium peaked in May and August and Alternaria in March and July. However, Ulocladium showed almost the same abundance from March to June and then in September and December. A double peak in total colony count
and fungal diversity was found, the first was in March and the second in November–December. Significant differences of total
fungal colony counts favouring the 1500 hours collection time over that at 1000 hours were found between November and January
while no such significant differences were obtained between February and April. Our results also indicated differences in
species composition between the two periods in different months. Spores of the three abundant species, Cladosporium, Fusarium and Alternaria, might favour high release in the 1500 hours period during winter while having a similar incidence during the two periods
in the spring months. |
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