Circadian and circannual variations in growth and cold resistance of warm acclimated rats and their relationship with the geomagnetic activity

Héroux, O.

doi:10.1007/bf01553376

Cited by 10 publications

(2 citation statements)

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“…Nevertheless, the influence of natural electromagnetic rhythms in life as a whole is gaining more acceptance, and research in chronoastrobiology is increasing (Halberg et al 2004;Muehsam and Ventura 2014). S-GMA has been found to affect also a wide diversity of multicellular organisms, as diverse as human beings, rats, fruit flies and plants (Héroux 1979;Dimitrova 2004;Izmaylov et al 2005;Krylov et al 2014;Shaposhnikov et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The influence of natural electromagnetic fields (EMFs) on a variety of living beings, such as fluctuations in geomagnetic activity, has been noted by several researchers (Héroux 1979;Bureau and Persinger 1992;Bureau et al 1996;Izmaylov et al 2005;Bondarenko and Evstafyev 2006;Babayev and Allahverdiyeva 2007;Galic and Persinger 2007;Hu et al 2009;Kolesnikov et al 2009;Krylov et al 2013;Shaposhnikov et al 2014), but is still largely ignored by the scientific community.…”

Section: Introductionmentioning

confidence: 99%

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Influence of solar and geomagnetic activity in Gymnodinium catenatum (Dinophyceae) cultures

Vale

2017

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Laboratory cultures of the paralytic shellfish poisoning producing microalga Gymnodinium catenatum were subjected to a hypo-osmotic shock and changes in cell concentration were observed in two separate experiments of 8 and 24 hours duration, respectively. The increase in geomagnetic activity (GMA), radio and X-ray fluxes and solar X-ray flares were negatively correlated with cell numbers. Cell losses were observed in the short experiment, but not in the longest one. GMA action was related to the course of the experimental period, while electromagnetic radiation (EMR) was only significantly related when the previous hours before the experiments were considered. The differential action windows might be indicative of two differential disruptive mechanisms: EMR might act on DNA synthesis and mitosis phases of the cell cycle (taking place in the dark period) and GMA might be more disruptive at the end of mytosis or cytokinesis phases taking place in the light period. Formation of long chains (> 4 cells/chain) was reduced with salinity and with temperatures above 27ºC but increased with EMR and GMA, particularly when grown at the highest temperatures recorded during the study period (≥28ºC).

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