Effect of Weak Extremely Low Frequency Magnetic Field on Isolated Crayfish Stretch Receptor Neuron: Nonlinear Dependence on Field Amplitude and Frequency

Uzdensky, Anatoly B.; Kutko, Olga Y.; Kogan, Andrei

doi:10.3109/15368379709015658

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…www.nature.com/scientificreports www.nature.com/scientificreports/ As a seasonal migratory species 34,53 , H. americanus may possess a polarity compass similar to P. argus 35,36 that could be used in homing and/or migration. To date there is no reported evidence of a magnetoreceptive sensory ability in H. americanus and there is limited anatomical research in crustaceans [54][55][56] . However support for a crustacean ability to detect magnetic stimuli arises from behavioural responses to the geomagnetic field e.g.…”

Section: Height From Seabed Yesmentioning

confidence: 99%

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species

Hutchison

Gill

Sigray

et al. 2020

Sci Rep

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Many marine animals have evolved sensory abilities to use electric and magnetic cues in essential aspects of life history, such as to detect prey, predators and mates as well as to orientate and migrate. Potential disruption of vital cues by human activities must be understood in order to mitigate potential negative influences. Cable deployments in coastal waters are increasing worldwide, in capacity and number, owing to growing demands for electrical power and telecommunications. Increasingly, the local electromagnetic environment used by electro-and magneto-sensitive species will be altered. We quantified biologically relevant behavioural responses of the presumed, magneto-receptive American lobster and the electro-sensitive Little skate to electromagnetic field (EMF) emissions of a subsea high voltage direct current (HVDC) transmission cable for domestic electricity supply. We demonstrate a striking increase in exploratory/foraging behaviour in skates in response to EMF and a more subtle exploratory response in lobsters. In addition, by directly measuring both the magnetic and electric field components of the EMF emitted by HVDC cables we found that there were DC and unexpectedly AC components. Modelling, restricted to the DC component, showed good agreement with measured results. Our cross-disciplinary study highlights the need to integrate an understanding of the natural and anthropogenic EMF environment together with the responses of sensitive animals when planning future cable deployments and predicting their environmental effects. Electromagnetic fields (EMFs) pervade the whole of the earth's environment and have been present throughout evolution of life on earth. The most dominant natural EMFs in the marine environment are the Earth's geomagnetic field (25-65 µT) and motionally induced electric fields, resulting from conductive seawater moving through the geomagnetic field 1. Organisms themselves also emit important but weak bioelectric fields resulting from cellular processes and muscular movements 2. Electromagnetic (EM) senses in marine animals have evolved multiple times across many taxa with a variety of, and sometimes multiple, sensory systems including magnetite-based, photo-chemical mechanisms, lateral lines and ampullae of Lorenzini 3,4. Magneto-sensitive animals respond to small changes in the inclination, intensity and/or direction of a magnetic field 4. They employ either a magnetic compass and/or magnetic map enabling homing and/or migration over short and long distances 5. Electro-sensitive species are able to detect weak electric fields used to detect prey and predators, to communicate, find mates and/or locally orientate 6. Electro-sensitive species are also able to respond to magnetic fields using electro-sensory apparatus and some species may have both electro and magneto-sensory apparatus 7. While we are still trying to understand the mechanisms involved in EM-sensing 4,7 , the functional roles are clearly of fundamental ecological importance. Interference with animal's sensory abiliti...

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Section: Height From Seabed Yesmentioning

confidence: 99%

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species

Hutchison

Gill

Sigray

et al. 2020

Sci Rep

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The method of isolation of the crayfish abdominal stretch receptor maintaining a connection of the sensory neuron to the ventral nerve cord ganglion

2014

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The crayfish stretch receptor consisting of the single mechanoreceptor neurons enveloped by satellite glial cells is the simplest functioning neuroglial preparation. However, during isolation, its axons are usually transected that eliminates afferent regulation and induces complex axotomy-related signaling responses in neurons and satellite glia. We developed new microsurgical method of crayfish stretch receptor isolation, which preserves connections of sensory neurons to the ventral nerve cord ganglion. The stretch receptor may either remain on the abdominal carapace, or be completely isolated. In both cases, it may be either intact, or axotomized. The integrity of axons was confirmed by firing recording from proximal and distal axon points. Normal, necrotic and apoptotic cells were visualized using double fluorochroming with Hoechst 33342 and propidium iodide. The isolated mechanoreceptor neurons maintain regular firing during 8-10 or more hours. Glial cells surrounding non-axotomized neurons demonstrate lower necrosis and apoptosis levels than the axotomized ones. Unlike the existing method, in which the sensory neurons were axotomized, the present method preserves links between the sensory neurons and the ganglion and makes possible to avoid consequences of axotomy in neurons and satellite glia. The present neuroglial preparation may be used as a simple but informative model object in studies of axotomy-induced degeneration and survival of peripheral neurons, the role of glia in neuron injury, the signaling mechanisms of neuroglial interactions, and the effects of diverse physical and chemical factors on neuronal and glial cells.

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Gender- and age-specific impairment of rat performance in the Morris water maze following prenatal exposure to an MRI magnetic field

Jiang¹,

Han²,

Pang³

et al. 2004

Brain Research

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Effect of Weak Extremely Low Frequency Magnetic Field on Isolated Crayfish Stretch Receptor Neuron: Nonlinear Dependence on Field Amplitude and Frequency

Cited by 4 publications

References 5 publications

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species

The method of isolation of the crayfish abdominal stretch receptor maintaining a connection of the sensory neuron to the ventral nerve cord ganglion

Gender- and age-specific impairment of rat performance in the Morris water maze following prenatal exposure to an MRI magnetic field

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