Bee-lieve it or not: magnetic field disrupts  the rhythm of
sleep-wake cycle in bumblebees

a 2024

Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees

BRIEDIKOVÁ, Kristína; Sol GABRIEL Y GALÁN MAROTO a Martin VÁCHA

Základní údaje

Originální název

Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees

Autoři

BRIEDIKOVÁ, Kristína; Sol GABRIEL Y GALÁN MAROTO a Martin VÁCHA

Vydání

BeeConnected 2024, 2024

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10602 Biology , Evolutionary biology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova česky

cirkadiánní rytmus; elektromagnetická pole; Bombus terrestris

Klíčová slova anglicky

circadian rhythm; electromagnetic fields; Bombus terrestris

Změněno: 10. 11. 2024 10:46, Mgr. Kristína Briediková

Anotace

V originále

The circadian clock is an endogenous mechanism whose disruption (e.g. by exposure to unnatural light) results in a multitude of health problems. Magnetic fields (MF) of unnatural intensity accompanying modern man belong to potential disruptors of this mechanism. The aim of this study was to test the hypothesis that unnatural MF affects the circadian rhythm of insects. As a model organism was chosen bumblebee Bombus terrestris, as it has the same clock protein Cryptochrome II (CRYII) as vertebrates. CRYII is a potential candidate for magnetoreceptor in animals. We monitored locomotor activity for 10 days under constant conditions in the absence of light. Two types of MF (0 μT, 120 μT) were applied. The motion of each individual was detected by a camera and frames processed by image analysing SW. Both the length of periods and robustness of periodicity were compared between groups. We found that there were no difference in length of period in different MF, but we found out that there is a qualitative difference in robustness of periodicity - the periodicity of individuals was much more stronger in hypomagnetic field (0 μT) compared to the individuals in MF with intensity 120 μT. Overall, the work shows that insect circadian rhythm was sensitive to relatively weak MF (only 2.5 times stronger than natural). Near zero MF had no effect. Also surprisingly, magnetic sensitivity was light-independent. Since B. terrestris uses the same molecular clock mechanism as vertebrates and light is not essential for magnetic sensitivity, our results may also be relevant for understanding the sensitivity of human cells to magnetically unnatural conditions in the environment of modern man.

Návaznosti

QL24010241, projekt VaV

Název: Strategie pro mitigaci vlivu roztoče Varroa destructor a přidružených viróz na zdraví a vitalitu včelstev v měnících se klimatických podmínkách ČR

Investor: Ministerstvo zemědělství ČR, Strategie pro mitigaci vlivu roztoče Varroa destructor a přidružených viróz na zdraví a vitalitu včelstev v měnících se klimatických podmínkách ČR

Citovat

BRIEDIKOVÁ, Kristína; Sol GABRIEL Y GALÁN MAROTO a Martin VÁCHA. Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees. In BeeConnected 2024. 2024.

@proceedings{2415298,
   author = {Briediková, Kristína and Gabriel y Galán Maroto, Sol and Vácha, Martin},
   booktitle = {BeeConnected 2024},
   keywords = {circadian rhythm; electromagnetic fields; Bombus terrestris},
   language = {eng},
   title = {Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees},
   year = {2024}
}

TY  - CONF
ID  - 2415298
AU  - Briediková, Kristína - Gabriel y Galán Maroto, Sol - Vácha, Martin
PY  - 2024
TI  - Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees
KW  - circadian rhythm
KW  - electromagnetic fields
KW  - Bombus terrestris
N2  - The circadian clock is an endogenous mechanism whose disruption (e.g. by exposure to unnatural light) results in a multitude of health problems. Magnetic fields (MF) of unnatural intensity accompanying modern man belong to potential disruptors of this mechanism. The aim of this study was to test the hypothesis that unnatural MF affects the circadian rhythm of insects. As a model organism was chosen bumblebee Bombus terrestris, as it has the same clock protein Cryptochrome II (CRYII) as vertebrates. CRYII is a potential candidate for magnetoreceptor in animals. We monitored locomotor activity for 10 days under constant conditions in the absence of light. Two types of MF (0 μT, 120 μT) were applied. The motion of each individual was detected by a camera and frames processed by image analysing SW. Both the length of periods and robustness of periodicity were compared between groups. We found that there were no difference in length of period in different MF, but we found out that there is a qualitative difference in robustness of periodicity - the periodicity of individuals was much more stronger in hypomagnetic field (0 μT) compared to the individuals in MF with intensity 120 μT. Overall, the work shows that insect circadian rhythm was sensitive to relatively weak MF (only 2.5 times stronger than natural). Near zero MF had no effect. Also surprisingly, magnetic sensitivity was light-independent. Since B. terrestris uses the same molecular clock mechanism as vertebrates and light is not essential for magnetic sensitivity, our results may also be relevant for understanding the sensitivity of human cells to magnetically unnatural conditions in the environment of modern man.
ER  -

BRIEDIKOVÁ, Kristína; Sol GABRIEL Y GALÁN MAROTO a Martin VÁCHA. Bee-lieve it or not: magnetic field disrupts the rhythm of sleep-wake cycle in bumblebees. In \textit{BeeConnected 2024}. 2024.

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