Aspergillus penicilloides and Eurotium halophilicum in association with house-dust mites.

Aspergillus penicilloides Speg., Eurotium halophilicum Christensen et al. and other xerophilic fungi were isolated from house dust.

Ecological relationships between xerophilic fungi and house-dust mites (Acarida: Pyroglyphidae).

At. 75 and 80% relative humidity (RH), on a wheat germ flake medium, Aspergillus penicilloides grew abundantly and suppressed the population growth of Dermatophagoides pteronyssiunus. At 71% RH, A.

Seasonal abundance of xerophilic fungi and house-dust mites (Acarida: Pyroglyphidae) in mattress dust.

Arthropods and xerophilic fungi in dust from 5 mattresses and air-borne fungi were identified and counted every 4 weeks from January 1976 to October 1977.The arthropod fauna consisted mainly of the pyroglyphid mites Dermatophagoides pteronyssinus (58%) and Euroglyphus maynei (30%). The fungal flora consisted of Aspergillus restrictus (48%), A.

An evaluation of biological methods in house-dust allergen research.

Methods in house dust analysis pertaining to particle identification, to extraction and identification of mites, other arthropods, fungi, bacteria and algae are evaluated. As far as possible, quantitative data are given to compare the extractive efficiency of the different methods.

Pyroglyphid mites, xerophilic fungi and allergenic activity in dust from hospital mattresses.

Dust from mattresses of different composition and age was analysed for mites, xerophilic fungi and allergenic activity. The mites of the genus Demodex were the most abundant (58.2 per cent).