Electromagnetic field exposure (50 Hz) impairs response to noxious heat in American cockroach

Maliszewska, Justyna; Marciniak, Patrycja; Kletkiewicz, Hanna; Wyszkowska, Joanna; Nowakowska, Anna; Rogalska, Justyna

doi:10.1007/s00359-018-1264-2

Cited by 14 publications

(10 citation statements)

References 42 publications

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“…On the one hand the reduced ability to learn new negative stimuli could lead to an increased latency of honey bee colonies to respond to novel threats. Maliszewska et al [10] found that short-term exposure of American cockroaches to 7,000 μT ELF EMFs increased the latency of responses to a negative heat stimulus. The increase in latency could clearly be detrimental to individuals in the ability to avoid harmful environmental stimuli.…”

Section: Discussionmentioning

confidence: 99%

“…Pollution of the environment with ELF EMFs has increased dramatically in the last century, with a major source for ELF EMFs being power transmission lines [7]. ELF EMF exposure has recently been associated with a variety of different effects on insects including changes in developmental biology [8, 9], locomotor behaviour [6, 10], molecular biology [11, 12], and immune response [13].…”

Section: Introductionmentioning

confidence: 99%

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Increased aggression and reduced aversive learning in honey bees exposed to extremely low frequency electromagnetic fields

et al. 2019

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Honey bees, Apis mellifera, are a globally significant pollinator species and are currently in decline, with losses attributed to an array of interacting environmental stressors. Extremely low frequency electromagnetic fields (ELF EMFs) are a lesser-known abiotic environmental factor that are emitted from a variety of anthropogenic sources, including power lines, and have recently been shown to have a significant impact on the cognitive abilities and behaviour of honey bees. Here we have investigated the effects of field-realistic levels of ELF EMFs on aversive learning and aggression levels, which are critical factors for bees to maintain colony strength. Bees were exposed for 17 h to 100 μT or 1000 μT ELF EMFs, or a sham control. A sting extension response (SER) assay was conducted to determine the effects of ELF EMFs on aversive learning, while an intruder assay was conducted to determine the effects of ELF EMFs on aggression levels. Exposure to both 100 μT and 1000 μT ELF EMF reduced aversive learning performance by over 20%. Exposure to 100 μT ELF EMFs also increased aggression scores by 60%, in response to intruder bees from foreign hives. These results indicate that short-term exposure to ELF EMFs, at levels that could be encountered in bee hives placed under power lines, reduced aversive learning and increased aggression levels. These behavioural changes could have wider ecological implications in terms of the ability of bees to interact with, and respond appropriately to, threats and negative environmental stimuli.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increased aggression and reduced aversive learning in honey bees exposed to extremely low frequency electromagnetic fields

et al. 2019

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“…Extremely lowfrequency EMF exposure had effects on the behavior, physiology, and protein expression of desert locusts (Schistocerca gregaria F.) [11]. Electromagnetic field exposure for 24 h, 72 h, and 7 days (50 Hz) impaired the latency to escape from noxious heat in American cockroach (Periplaneta americana L.) [12].…”

Section: Introductionmentioning

confidence: 99%

Changes in Honeybee Behavior Parameters under the Influence of the E-Field at 50 Hz and Variable Intensity

Migdał

Murawska

Bieńkowski

et al. 2021

Animals

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EM-fields come from both natural and anthropogenic sources. This study aimed to investigate changes in honeybee behavior parameters under the influence of an electric field at 50 Hz and variable intensity. Bees were exposed for 1 h, 3 h, or 6 h to the following artificial E-field intensities: 5.0 kV/m, 11.5 kV/m, 23.0 kV/m, or 34.5 kV/m. Bees in the control group were under the influence of an E-field <2.0 kV/m. Six basic behaviors were selected for bee observation (walking, grooming, flight, stillness, contact between individuals, and wing movement). Our research shows the impact of bee exposure time on behavioral change within groups. Exposure for 3 h caused a decrease in the time that bees spent on behaviors and in the number of occurrences. After 6 h, the parameters increased within the groups, as was the case with 1 h exposure. This may indicate that there is a behavioral barrier that allows the pattern to normalize for some time.

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“…Pellacani and Costa [2018] describe the range of biological effects that ELF EMF pollution causes, including neurological effects that underpin behavioral processes in a variety of organisms. In addition, ELF EMFs can have profound effects on the behavior and cognition of insects [Maliszewska et al, 2018;Shepherd et al, 2018Shepherd et al, , 2019. Important pollinator species, such as honeybees, use low-strength magnetic fields as cues for foraging [Chicas-Mosier et al, 2020].…”

Section: Introductionmentioning

confidence: 99%

Extremely Low‐Frequency Electromagnetic Fields Entrain Locust Wingbeats

Shepherd

Jackson

Sharkh

et al. 2021

Bioelectromagnetics

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Extremely low-frequency electromagnetic fields (ELF EMFs) have been shown to impact the behavior and physiology of insects. Recent studies have highlighted the need for more research to determine more specifically how they affect flying insects. Here, we ask how locust flight is affected by acute exposure to 50 Hz EMFs. We analyzed the flights of individual locusts tethered between a pair of copper wire coils generating EMFs of various frequency using high-speed video recording. The mean wingbeat frequency of tethered locusts was 18.92 ± 0.27 Hz. We found that acute exposure to 50 Hz EMFs significantly increased absolute change in wingbeat frequency in a field strength-dependent manner, with greater field strengths causing greater changes in wingbeat frequency. The effect of EMFs on wingbeat frequency depended on the initial wingbeat frequency of a locust, with locusts flying at a frequency lower than 20 Hz increasing their wingbeat frequency, while locusts flying with a wingbeat frequency higher than 20 Hz decreasing their wingbeat frequency. During the application of 50 Hz EMF, the wingbeat frequency was entrained to a 2:5 ratio (two wingbeat cycles to five EMF cycles) of the applied EMF. We then applied a range of ELF EMFs that were close to normal wingbeat frequency and found that locusts entrained to the exact frequency of the applied EMF. These results show that exposure to ELF EMFs lead to small but significant changes in wingbeat frequency in locusts. We discuss the biological implications of the coordination of insect flight in response to electromagnetic stimuli. Bioelectromagnetics.

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Electromagnetic field exposure (50 Hz) impairs response to noxious heat in American cockroach

Cited by 14 publications

References 42 publications

Increased aggression and reduced aversive learning in honey bees exposed to extremely low frequency electromagnetic fields

Increased aggression and reduced aversive learning in honey bees exposed to extremely low frequency electromagnetic fields

Changes in Honeybee Behavior Parameters under the Influence of the E-Field at 50 Hz and Variable Intensity

Extremely Low‐Frequency Electromagnetic Fields Entrain Locust Wingbeats

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