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Titolo:
Fluctuating hydrating and dehydrating relative humidities effects on the life cycle of Dermatophagoides farinae (Acari : Pyroglyphidae)
Autore:
Arlian, LG; Neal, JS; Vyszenski-Moher, DL;
Indirizzi:
Wright State Univ, Dept Biol Sci, Dayton, OH 45435 USA Wright State Univ Dayton OH USA 45435 Dept Biol Sci, Dayton, OH 45435 USA
Titolo Testata:
JOURNAL OF MEDICAL ENTOMOLOGY
fascicolo: 4, volume: 36, anno: 1999,
pagine: 457 - 461
SICI:
0022-2585(199907)36:4<457:FHADRH>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOUSE-DUST MITES; PTERONYSSINUS ACARI; WATER-BALANCE; FECUNDITY; AIR;
Keywords:
Dermatophagoides farinae; relative humidity; life cycle; development;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Arlian, LG Wright State Univ, Dept Biol Sci, Dayton, OH 45435 USA Wright State Univ Dayton OH USA 45435 ci, Dayton, OH 45435 USA
Citazione:
L.G. Arlian et al., "Fluctuating hydrating and dehydrating relative humidities effects on the life cycle of Dermatophagoides farinae (Acari : Pyroglyphidae)", J MED ENT, 36(4), 1999, pp. 457-461

Abstract

Reducing relative humidity to <50% in homes is recommended as one means ofreducing dust mite populations in the homes of those who suffer allergies to house dust mites. Because of some activities in the home (e.g., bathing,cooking, opening windows), it may not be possible to keep relative humidity constantly <50%. We determined how the fluctuating daily regimes of hydrating (75%) and dehydrating (35%) relative humidities affected the development of Dermatophagoides farinae Hughes. The life cycle was completed (egg toadults) when mites were given regimes of 24 h at 75% RH, 8 h at 75% and 16h at 35% RH, 6 h at 75% and 18 h at 35% RH, and 4 h at 75% and 20 h at 35%RH. The time required to complete development was inversely related to theamount of moist air given daily. Development took 58.3 +/- 1.44, 64.7 +/- 1.87, and 82.4 +/- 2.39 d for 8, 6, and 4 h of moist air daily, respectively. In comparison, the life cycle was completed in 41.1 +/- 0.50 d when development occurred at a constant 75% RH. Egg incubation time was significantly longer for fluctuating ambient relative humidity compared to a continuous75 or 35% RH. Of the emerging larvae 53.8, 72.7, 62.7, and 85.0% completedthe life cycle when given 4, 6, 8, and 24 h 75% RH daily and 35% RH for the remainder of the day. This study revealed that D. farinae can complete development when given only short periods of moist air daily but the rate of development is much slower than development at a constant 75% RH. Therefore, reducing ambient relative humidity does reduce the rate of development ofmite populations and the accumulation of dust mite allergen.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 22:19:42