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Population growth and respiration in the dust mite Dermatophagoides farinae under different temperature and humidity regimes

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Abstract

Dermatophagoides farinae is an important house dust mite species that causes allergies in humans worldwide. In houses, these mites are commonly found in actively used mattresses and pillows, which provide food (i.e. sloughed skin and microorganisms), moisture, and increased temperature for faster mite development. In mattresses, feeding mites prefer the upper sector, as close as possible to the resting human (temperature 32–36 °C, humidity between 55 and 59%). However, mites that are not actively feeding prefer staying at deeper zones of the mattress. Here, we analyzed mite responses to different temperatures (15–35 °C) and relative humidity (62–94% RH) in terms of their population size growth and respiration (CO2 production) using lab mite cultures. The intrinsic rate of population increase had a single maximum at approximately 28 °C and 85% RH. At 30 °C, there were two respiration peaks at RH 90% (smaller peak) and 65% (larger peak). Therefore, there is a mismatch between the optimal temperature/humidity for the population size increase vs. respiration. We propose preliminary hypotheses explaining the two respiration peaks and suggest that future research should be done to elucidate the nature of these peaks.

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Acknowledgements

The authors are obligated to two anonymous referees for useful comments of previous version of draft. We thank Martin Markovic for excellent technical help.

Funding

The study was supported by the Ministry of Agriculture of the Czech Republic, institutional support MZE-RO0423. PBK was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the Federal Scientific and Technical Program for the Development of Genetic Technologies for 2019–2027 (Agreement No. 075-15-2021-1345, unique identifier RF – 193021X0012) to A. V. Lisitsa.

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TV provided the experiment, TV and JH designed the experiment, SP analyzed the data and TV, JH, SP and PBK participated in the scientific writing.

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Correspondence to Jan Hubert.

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The authors declare no competing interests.

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Vackova, T., Pekar, S., Klimov, P.B. et al. Population growth and respiration in the dust mite Dermatophagoides farinae under different temperature and humidity regimes. Exp Appl Acarol 89, 157–169 (2023). https://doi.org/10.1007/s10493-022-00775-y

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  • DOI: https://doi.org/10.1007/s10493-022-00775-y

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