caa a22 4500 469060468 CHVBK 20180323132855.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF01201490 doi (NATIONALLICENCE)springer-10.1007/BF01201490 Arlian Larry Department of Biological Sciences, Wright State University, 45435, Dayton, OH, USA aut Water balance and humidity requirements of house dust mites [Elektronische Daten] [Larry Arlian] The house dust mites,Dermatophagoides farinae, D. pteronyssinus andEuroglyphus maynei, are prevalent in homes in humid geographical areas throughout the world. These mites thrive in humid environments in human dwellings where there is no liquid water to drink. However, their bodies contain 70-75% water by weight, which must be maintained in order to reproduce. Their primary source of water is water vapor which is actively extracted from unsaturated air. At relative humidities above 65-70%, adequate amounts of water can be extracted from unsaturated air to compensate for that lost by all avenues. Active uptake is associated with ingestion of a hyperosmotic solution which is secreted by the supracoxal glands. Active mites do not survive longer than 6-11 days at RHs ≤50%. They survive extended dry periods by forming a desiccation-resistant protonymphal stage which can survive for months at RHs below the critical humidity for active stages. Feeding rate and allergen production is directly influenced by RH. Mites feed, multiply, and produce more fecal matter at higher RHs than at lower ones. Elsevier Science Publishers B.V., 1992 Experimental & Applied Acarology Kluwer Academic Publishers 16/1-2(1992-11-01), 15-35 0168-8162 16:1-2<15 1992 16 10493 https://doi.org/10.1007/BF01201490 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01201490 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Arlian Larry Department of Biological Sciences, Wright State University, 45435, Dayton, OH, USA aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 16/1-2(1992-11-01), 15-35 0168-8162 16:1-2<15 1992 16 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer