WEEKLY VARIATION OF FUNGAL COLONIES IN THE ATMOSPHERE OF PALENCIA (SPAIN) THROUGHOUT THE YEAR 1992

We have carried out a qualitative and quantitative study of the fungal colonies developed in two different culture media: Czapecdox and Sabo uraud, throughout the year 1992 in Palencia city. A volumetric trap wa s used. We collected daily samples of aerovagans spore from the atmosp here through a cellulose esther filter, half of which was cultivated o n Petri dishes. The following genera were identified: 26 Deuteromycete s (54%), four Zygomycetes (28%), and three bacteria, which along with Actinomycetes, reached 18% of all the registered colonies. Fifty-two p ercent of the colonies were developed in Czapecdox culture medium and 48% in Sabouraud medium. Most of the bacteria were grown in Sabouraud medium. The highest number of colonies recorded belonged to the follow ing three genera: Mucor (25%), Aspergillus (23%) and Penicillium (16%) . Most colonies were grown in autumn (32%), while spring was the secon d most frequent season when 28% of the colonies were registered.