コナダニおよびヒョウヒダニ類の分散におよぼす種々の環境条件の影響

概要

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The effect of various environmental conditions on the dispersion of some astigmatid mites was studied. An increase of the alarm pheromone, citral, in the medium stimulated the active dispersion of Carpoglyphus lactis, Lardoglyphus konoi, Tyrophagus putrescentiae and Aleuroglyphus ovatus. All the mites examined in this experiment (C. lactis, L. konoi, T. putrescentiae, A. ovatus and Dermatophagoides farinae) were dispersed more actively at low humidity than at high humidity. With regard to the effect of temperatures on the dispersion, the mites were classified into two types. The mites in the first type, which consisted of L. konoi, Glycyphagus domesticus and Acarus immobilis, were more actively dispersed at a high temperature (35℃). The mites in the other type, which consisted of C. lactis and T. putrescentiae, became active at low temperatures (15℃ or 20℃). The citral, secreted out of C. lactis bodies at 15℃ or 35℃, had a higher ratio of neral than geranial. The quantity of citral in the medium with C. lactis mites was higher at 15℃ than at 35℃. The difference of in the citral content in the medium with the mites was correlative to the dispersion activity of C. lactis. It was suggested that aggravation of the environmental factors for C. lactis stimulated the secretion of the alarm pheromone, citral, and this phenomenon activated the dispersion of the mites.
日本衛生動物学会の論文
1998-12-15