Can the tardigrade Hypsibius dujardini survive in the absence of the geomagnetic field?
| Autor: | B. Szymański, Jakub Z. Kosicki, Bogdan Idzikowski, Weronika Erdmann, Łukasz Kaczmarek, W. Kowalski |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Metabolic Processes Atmospheric Science Death Rates Tardigrada Zoology lcsh:Medicine Environment Pathology and Laboratory Medicine Hypsibius dujardini Biochemistry 03 medical and health sciences Extremophiles Signs and Symptoms Meteorology Diagnostic Medicine Medicine and Health Sciences Animals Cryptobiosis lcsh:Science Dehydration (Medicine) Demography Multidisciplinary biology Physics High mortality Significant difference lcsh:R Ecology and Environmental Sciences Magnetism Biology and Life Sciences Humidity Earth Geomagnetism biology.organism_classification Condensed Matter Physics 030104 developmental biology Earth's magnetic field Magnetic Fields Geophysics Metabolism Eutardigrade Physical Sciences People and Places Earth Sciences lcsh:Q Tardigrade Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 12, Iss 9, p e0183380 (2017) |
| ISSN: | 1932-6203 |
| Popis: | Earth's geomagnetic field has undergone critical changes in the past. Studies on the influence of the magnetic field on Earth's organisms are crucial for the understanding of evolution of life on Earth and astrobiological considerations. Numerous studies conducted both on plants and animals confirmed the significant influence of the geomagnetic field on the metabolism of living organisms. Water bears (Tardigrada), which are a mong the most resistant animals due to their cryptobiotic abilities, show significant resistance to a number of environmental stressors, but the influence of the geomagnetic field on their fitness has not been addressed before. In our studies, we used eutardigrade Hypsibius dujardini to analyse whether isolation from the geomagnetic field had an effect on mortality. We found that Hypsibius dujardini specimens demonstrated relatively high mortality during anhydrobiosis, also in control groups exposed to the normal geomagnetic field. Moreover, similar mortality was observed in anhydrobiotic specimens isolated from the geomagnetic field. However, a significant difference was noted between tardigrade survival and the moment of their isolation from the geomagnetic field. In particular, tardigrade mortality substantially increased in absence of a magnetic field during the process of entering anhydrobiosis and returning to active life. Our results suggest that these processes rely on complex metabolic processes that are critically influenced by the geomagnetic field. |
| Databáze: | OpenAIRE |
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