Positive geotactic behaviors induced by geomagnetic field in Drosophila

Bae, Ji-Eun; Bang, Sunhoe; Min, Soohong; Lee, Sang-Hyup; Kwon, Soon-Hwan; Lee, Youngseok; Lee, Yong-Ho; Chung, Jongkyeong; Chae, Kwon‐Seok

doi:10.1186/s13041-016-0235-1

Cited by 49 publications

(86 citation statements)

References 37 publications

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“…Interestingly, the magnetic field is one of the few common features shared across the diverse and expansive environments that salmon and trout occupy (gravel beds, streams, lakes, rivers, estuaries, coastal waters and the open sea) and may, therefore, be particularly useful as a spatial reference system. Finally, our study contributes to the growing literature that suggests vertical movements of burrowing, flying and swimming organisms are influenced by magnetic cues [4,5,19,20]. Further exploration of organisms' use of the magnetic field to orient in three-dimensional space is warranted.…”

Section: Discussionmentioning

confidence: 80%

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

et al. 2018

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Organisms use a variety of environmental cues to orient their movements in three-dimensional space. Here, we show that the upward movement of young Chinook salmon () emerging from gravel nests is influenced by the geomagnetic field. Fish in the ambient geomagnetic field travelled farther upwards through substrate than did fish tested in a field with the vertical component inverted. This suggests that the magnetic field is one of several factors that influences emergence from the gravel, possibly by serving as an orientation cue that helps fish determine which way is up. Moreover, our work indicates that the species are sensitive to the magnetic field throughout their life cycles, and that it guides their movements across a range of spatial scales and habitats.

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Section: Discussionmentioning

confidence: 80%

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

et al. 2018

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“…As part of its innate escape response, appropriate vertical movement is a critical phenomenon for the survival of flying animals (Bae et al, 2016). The locomotory and climbing activity of the flies was thus assayed after five days of Nigella sativa exposure at the described doses using the negative geotaxis assay.…”

Section: Discussionmentioning

confidence: 99%

Geotactical and Neurochemical Phenotypes of Drosophila Melanogaster Following Nigella Sativa Exposure

Folarin¹,

Kayode²,

Adenowo³

et al. 2019

Preprint

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Drosophila melanogaster is a holometabolous frugivorous fly, with neurobiological and neurogenetic modelling importance owed to its small size, short life cycle, fast reproductive rate, low cost in maintenance and small tetra-chromosomal genome. Nigella sativa (Black seed) is a widely researched medicinal plant with numerous reported therapeutic activities in humans and rodents. Being the most abundant neurotransmitter in Drosophila, glutamate plays an important role in learning and memory, neuro-excitation but also neuro-inhibition. This research thus investigated the impacts of Nigella sativa on the survival rate, glutamate level and negative geotactical abilities in Harwich strains of Drosophila melanogaster. The experimental flies were exposed to varied concentrations of Nigella sativa oil for five days. The results showed a higher survival rate, glutamate level and negative geotactic ability for the lower dose flies, while the higher Nigella sativa dose flies recorded significantly lesser values in the trio. This indicates that Nigella sativa administered at 2.4ml/4ml (60%) of feed may be lethal to the general survival and physiological functions of adult Drosophila. The lower dose however shows a high potential of improving locomotive and neurochemical activities in flies, as further studies are on to further identify the most therapeutic dose of Nigella sativa in Drosophila melanogaster, with a range suggested based on the findings of this research

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“…In addition to using GMF for orientation and navigation, animals can also exhibit other physiological and behavioural responses to changes in magnetic field intensity [9-15]. However, few studies have focused on responses of animals to changes in geomagnetic field intensity at levels that naturally vary in their environment [12, 16]. Most studies of the bioeffects of GMF on organisms in the last decade have been conducted by either shielding or enhancing the GMF, and have highlighted its importance in maintaining homeostasis [13, 15, 17].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the use of GMF for orientation and navigation, animals were also found to show other physiological and behavioral responses to changes in magnetic field intensity [9-15], even though few works have focused on responses of animals to geomagnetic level changes in field intensity [12, 16]. However, more studies on bioeffects triggered by shielding or compensating the GMF have been conducted in the last decade, and thus validated the importance of GMF in maintaining organism homeostasis [13, 17].…”

Section: Introductionmentioning

confidence: 99%

Geomagnetic field intensity as a cue for the regulation of insect migration

Wan

Liu

Wang

et al. 2019

Preprint

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1Geomagnetic field (GMF) intensity can be used by some animals to determine their direction and 2 position during migration. However, its role, if any, in mediating other migration-related phenotypes 3 remains largely unknown. Here, we simulated variation in GMF intensity between two locations 4 along the migration route of a nocturnal insect migrant, the brown planthopper Nilaparvata lugens, 5 that varied by ~5 μ T (GMF 50μT vs. GMF 45μT ) in field intensity. After one generation of exposure, we 6 tested for changes in key morphological, behavioural and physiological traits related to migratory 7 performance including wing dimorphism, flight capacity and positive phototaxis. Our results showed 8 that all three morphological and behavioural phenotypes responded to a small difference in magnetic 9 field intensity between the simulated northern vs. southern locations in ways expected along the 1 0 migratory route. Consistent magnetic responses in the expression of the phototaxis-related 1 1Drosophila-like cryptochrome 1 (Cry1) gene and levels of two primary energy substrates used during 1 2 flight, triglyceride and trehalose, were also found. Our findings indicate GMF intensity can be a cue 1 3 that regulates the expression of phenotypes critical for insect migration and highlight the unique role 1 4 of magnetoreception as a trait that can help migratory insects express potentially beneficial 1 5 phenotypes in geographically variable environments.

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Positive geotactic behaviors induced by geomagnetic field in Drosophila

Cited by 49 publications

References 37 publications

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

Geotactical and Neurochemical Phenotypes of Drosophila Melanogaster Following Nigella Sativa Exposure

Geomagnetic field intensity as a cue for the regulation of insect migration

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