Sharing a bed with mites: preferences of the house dust mite Dermatophagoides farinae in a temperature gradient

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F21%3A10174309" target="_blank" >RIV/00027006:_____/21:10174309 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10442282 RIV/60460709:41210/21:88581 RIV/00216224:14310/21:00122396

Výsledek na webu

<a href="https://link.springer.com/journal/10493/volumes-and-issues/84-4" target="_blank" >https://link.springer.com/journal/10493/volumes-and-issues/84-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10493-021-00649-9" target="_blank" >10.1007/s10493-021-00649-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sharing a bed with mites: preferences of the house dust mite Dermatophagoides farinae in a temperature gradient

Popis výsledku v původním jazyce

House dust mites inhabit bed mattresses contaminating them with allergens. A strong temperature/moisture gradient exists in mattresses when it is used by humans daily. Here, we studied migration patterns of the mite Dermatophagoides farinae in continuous and time-discontinuous temperature gradients consisting of five sectors with 19-23, 23-28, 28-32, 32-36 and 36-41 degrees C, containing dye-labeled diets as an indicator of mite presence and feeding. The mites migrated through the sectors and fed on the labeled diets or stayed unfed. The numbers of mites with the same coloration in their guts and the numbers of unfed mites in the sectors were recorded. Unfed mites provided information on short-term temperature preferences. Apart from a control trial, two experiments were performed: (i) a constant 19-41 degrees C gradient for 24 h, and (ii) alternating cycles of the same temperature gradient (19-41 degrees C, 8 h) and room temperature (16 h) for 5 days to model the typical daily occupancy of bed by humans. In both experiments, fed mites preferred a sector with 32-36 degrees C, suggesting that in mattresses, house dust mites prefer to stay as close as possible to the resting human, thus maximizing allergen exposure. However, the number of unfed mites decreased with increased temperatures in the gradient. Experiment (ii) showed that the fed mites remained at the same optimal distance from the heat source, suggesting that they stay at the upper surface of the regularly used mattress, even when human was temporarily absent during the day. Unfed mites apparently hide deeper in mattresses as suggested by their avoidance of increased temperatures.

Název v anglickém jazyce

Sharing a bed with mites: preferences of the house dust mite Dermatophagoides farinae in a temperature gradient

Popis výsledku anglicky

House dust mites inhabit bed mattresses contaminating them with allergens. A strong temperature/moisture gradient exists in mattresses when it is used by humans daily. Here, we studied migration patterns of the mite Dermatophagoides farinae in continuous and time-discontinuous temperature gradients consisting of five sectors with 19-23, 23-28, 28-32, 32-36 and 36-41 degrees C, containing dye-labeled diets as an indicator of mite presence and feeding. The mites migrated through the sectors and fed on the labeled diets or stayed unfed. The numbers of mites with the same coloration in their guts and the numbers of unfed mites in the sectors were recorded. Unfed mites provided information on short-term temperature preferences. Apart from a control trial, two experiments were performed: (i) a constant 19-41 degrees C gradient for 24 h, and (ii) alternating cycles of the same temperature gradient (19-41 degrees C, 8 h) and room temperature (16 h) for 5 days to model the typical daily occupancy of bed by humans. In both experiments, fed mites preferred a sector with 32-36 degrees C, suggesting that in mattresses, house dust mites prefer to stay as close as possible to the resting human, thus maximizing allergen exposure. However, the number of unfed mites decreased with increased temperatures in the gradient. Experiment (ii) showed that the fed mites remained at the same optimal distance from the heat source, suggesting that they stay at the upper surface of the regularly used mattress, even when human was temporarily absent during the day. Unfed mites apparently hide deeper in mattresses as suggested by their avoidance of increased temperatures.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

EXPERIMENTAL AND APPLIED ACAROLOGY

ISSN

0168-8162

e-ISSN

—

Svazek periodika

84

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

755-767

Kód UT WoS článku

000679263700002

EID výsledku v databázi Scopus

2-s2.0-85111506542