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Titolo:
POPULATION-DYNAMICS OF THE HOUSE-DUST MITES DERMATOPHAGOIDES-FARINAE,DERMATOPHAGOIDES-PTERONYSSINUS, AND EUROGLYPHUS-MAYNEI (ACARI, PYROGLYPHIDAE) AT SPECIFIC RELATIVE HUMIDITIES
Autore:
ARLIAN LG; CONFER PD; RAPP CM; VYSZENSKIMOHER DL; CHANG JCS;
Indirizzi:
WRIGHT STATE UNIV,DEPT BIOL SCI DAYTON OH 45435
Titolo Testata:
Journal of medical entomology
fascicolo: 1, volume: 35, anno: 1998,
pagine: 46 - 53
SICI:
0022-2585(1998)35:1<46:POTHMD>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOUTHERN-CALIFORNIA; PREVALENCE; HOMES; SENSITIZATION; REQUIREMENTS; ABUNDANCE; EXPOSURE; CHILDREN; ALLERGY; ASTHMA;
Keywords:
DERMATOPHAGOIDES FARINAE; DERMATOPHAGOIDES PTERONYSSINUS; EUROGLYPHUS MAYNEI; HOUSE DUST MITES; POPULATION DYNAMICS; RELATIVE HUMIDITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
L.G. Arlian et al., "POPULATION-DYNAMICS OF THE HOUSE-DUST MITES DERMATOPHAGOIDES-FARINAE,DERMATOPHAGOIDES-PTERONYSSINUS, AND EUROGLYPHUS-MAYNEI (ACARI, PYROGLYPHIDAE) AT SPECIFIC RELATIVE HUMIDITIES", Journal of medical entomology, 35(1), 1998, pp. 46-53

Abstract

Experiments were conducted to determine the effects of relative humidity on the population dynamics of single and mixed species of Dermatophagoides farinae Hughes, D. pteronyssinus (Trouessart), and Euroglyphus maynei (Cooreman) at specific relative humidities maintained at 20 degrees C, with unlimited food. The population density of single and mixed species (D. farinae and D. pteronyssinus) increased exponentially when cultured at 65, 70, and 75% RH. The mean population growth rates were 17.3 +/- 4.4 SD and 32.5% +/- 4.7/wk for D. farinae and D. pteronyssinus, respectively. Mean population doubling times were 2.2 +/- 0.3and 4.2 +/- 1.3 wk for D. pteronyssinus and D. farinae, respectively. Mixed species cultures, started with equal numbers of D. farinae and D. pteronyssinus, resulted in higher percentages of D. farinae than D.pteronyssinus. In cultures started with 75% of one species and 25% ofthe ether, the more numerous species remained dominant and in similarratios throughout the experiment. Both D. farinae and D. pteronyssinus population densities maintained at 85% RH declined over a 12-wk culture period because of mold growth. E. maynei were unable to survive at65, 70, 75, and 85% RH, which indicated that their climatic requirements were different from those of D. farinae and D. pteronyssinus. Population densities of D. farinae and D. pteronyssinus cultures declined when held at 21-22 degrees C and relative humidities of less than or equal to 50%; however, at 50% RH, significant proportions of the populations survived for 10 wk. Half-life for desiccation of D. farinae and D. pteronyssinus at 45% RH was 11.5 and 1.2 wk, respectively, but at 50% RH was 86.3 and 4.0 wk, respectively. The data indicated that a less than or equal to 50% RH would have to be maintained for long periodsto reduce both D. farinae and D. pteronyssinus by desiccation procedures. The results of this study show that D. farinae and D. pteronyssinus have high reproductive potentials and population growth rates, which indicate that mite reduction procedures must be thorough or mite densities will return to high levels quickly following remediation if adequate food and suitable microclimatic conditions exist.

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Documento generato il 01/12/20 alle ore 01:14:38