Magnetic Material in the Head of the Common Pacific Dolphin

Zoeger, John; Dunn, J. R.; Fuller, M.

doi:10.1126/science.7256282

Cited by 113 publications

(43 citation statements)

References 10 publications

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“…The ability of biological systems to detect the Earth's magnetic field is found in diverse invertebrates and vertebrates and is important for compass orientation of animals (Katz and Yilks, 1979;Mather and Baker, 1981;Zoeger et al, 1981;Blakemore, 1982;Mathis and Moore, 1984;Lohman and Willows, 1991;Wang et al, 2002). Furthermore, numerous studies have explored the interaction of man-made static and alternating magnetic fields with biological systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of alternating the magnetic feld on phosphate metabolism in the nervous system of Helix pomatia

Nikolić¹,

Rokic²,

Todorović³

et al. 2010

Biol. Res.

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The effect of extremely low frequency magnetic fields (50 Hz, 0.5 mT) -ELF-MF, on phosphate metabolism has been studied in the isolated ganglions of the garden snail Helix pomatia, after 7 and 16 days of snail exposure to ELF-MF. The influence of ELF-MF on the level of phosphate compounds and intracellular pH was monitored by 31 P NMR spectroscopy. Furthermore, the activity of enzymes involved in phosphate turnover, total ATPases, Na + /K + -ATPase and acid phosphatase has been measured. The exposure of snails to the ELF-MF for the period of 7 days shifted intracellular pH toward more alkaline conditions, and increased the activity of investigated enzymes. Prolonged exposure to the ELF-MF for the period of 16 days caused a decrease of PCr and ATP levels and decreased enzyme activity, compared to the 7-day treatment group. Our results can be explained in terms of: 1. increase in phosphate turnover by exposure to the ELF-MF for the period of 7 days, and 2. adaptation of phosphate metabolism in the nervous system of snails to prolonged ELF-MF exposure.

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Section: Introductionmentioning

confidence: 99%

Effect of alternating the magnetic feld on phosphate metabolism in the nervous system of Helix pomatia

Nikolić¹,

Rokic²,

Todorović³

et al. 2010

Biol. Res.

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“…obesus, Sarda sarda, Scomber Engraulis mordax, Oncorhynchus tschawytscha . A possi of the nervous system using the forces affecting magnetite particles had be en pointed out to earlier (Ising 1945;Lowenstam 1962;Keeton 1972), but it was after magnetite crystals were discovered in magnetotactic bacteria (Frankel et al 1979;Frankel and Blackemore 1980), bees (Gould et al 1978), birds (Wal cott et al 1979), and mammals (Zoeger 1981) that the theory received a good bac king. If magnetite, indispensable for orientation, is synthesised metabolically thro ughout an individual's life and accumulated in the skull's ethrnoidal part, the adults contain higher amounts of the substance and have a better orientation by be-ing able to utilise the ambient magnetic field than juveniles (Kirschvink and Gould 1981;Kirschvink et al 1985;Chew and Brown 1989).…”

Section: Discussionmentioning

confidence: 99%

Spatial orientation of trout (Salmo trutta L.) and rainbow trout (Oncorhynchus mykiss Walb.) embryos in natural and artificial magnetic fields

Formicki¹,

Bonisławska²,

Jasiński³

1997

Acta Ichthyol. Piscat.

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“…The geomagnetic field affects the behaviour and a number of metabolic processes of numerous animal species (KIRSCHVINK, 1980;RODDA, 1983, ZOGER et al, 1981. It has also been used for orientation.…”

Section: Introductionmentioning

confidence: 99%

“…Article available at http://www.kmae-journal.org or http://dx.doi.org/10.1051/kmae:2005033 factors, water currents, activity of stars, or action of the geomagnetic field were listed among the possible clues (GROOT, 1965;WILTSCHKO and WILTSCHKO, 1972;QUINN, 1980;QUINN et al, 1981;ZOGER et al, 1981;QUINN and BRANNON, 1982;QUINN and GROOT, 1983). The geomagnetic field affects the behaviour and a number of metabolic processes of numerous animal species (KIRSCHVINK, 1980;RODDA, 1983, ZOGER et al, 1981.…”

Section: Introductionmentioning

confidence: 99%

Sheltering Behaviour of Spinycheek Crayfish (Orconectes Limosus) in the Presence of an Artificial Magnetic Field

Tański

Formicki

Śmietana

et al. 2005

Bull. Fr. Pêche Piscic.

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The potential of artificial hideouts, outfitted with magnets or their imitations (control), to attract spinycheek crayfish Orconectes limosus was studied. The experiments were carried out within 1999-2002 in an 80-hectar natural lake. There were three parallel setups, with three experimental treatments (hideouts) each. The presently acquired results suggest explicitly that the magnetic field generated at the entrance to the hideouts (made of ceramic pipes), affects the movement direction of crayfish. This was evident from statistically significant differences between the numbers of crayfish attracted to the pipes equipped with magnets and to the control ones. Key-words:Spinycheek crayfish, sheltering, artificial magnetic field, magnetoreception. COMPORTEMENT DE CACHE DE L'ÉCREVISSE AMÉRICAINE (ORCONECTES LIMOSUS) SOUMIS A UN CHAMP MAGNÉTIQUE ARTIFICIEL RÉSUMÉL'attractivité de caches artificielles, équipées de sondes magnétiques ou de leurres, a été étudiée chez les écrevisses américaines. Les expériences ont été menées de 1999 à 2000 dans un lac naturel de 80 hectares. Trois lots expérimentaux ont été réalisés avec trois types de traitements (caches). Les résultats suggèrent que le champ magnétique généré à l'entrée des caches (structure en céramique) affecte le sens du déplacement des écrevisses. Il existe des différences significatives sur le nombre d'écrevisses attirées entre des caches équipées de sondes magnétiques et celles des lots témoin.Mots-clés : écrevisse américaine, cache, champ magnétique artificiel, réception magnétique.

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Magnetic Material in the Head of the Common Pacific Dolphin

Cited by 113 publications

References 10 publications

Effect of alternating the magnetic feld on phosphate metabolism in the nervous system of Helix pomatia

Effect of alternating the magnetic feld on phosphate metabolism in the nervous system of Helix pomatia

Spatial orientation of trout (Salmo trutta L.) and rainbow trout (Oncorhynchus mykiss Walb.) embryos in natural and artificial magnetic fields

Sheltering Behaviour of Spinycheek Crayfish (Orconectes Limosus) in the Presence of an Artificial Magnetic Field

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