Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches

Abstract Many animals display sensitivity to external magnetic field, but it is only in the simplest organisms that the sensing mechanism is understood. Here we report on behavioural experiments where American cockroaches (Periplaneta americana) were subjected to periodically rotated external magnet...

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Autores principales:	Kai Sheng Lee, Rainer Dumke, Tomasz Paterek
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3aaf3f0f29f49af9666a05c543d6b43
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spelling	oai:doaj.org-article:f3aaf3f0f29f49af9666a05c543d6b432021-12-02T14:58:19ZNumerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches10.1038/s41598-021-91815-x2045-2322https://doaj.org/article/f3aaf3f0f29f49af9666a05c543d6b432021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91815-xhttps://doaj.org/toc/2045-2322Abstract Many animals display sensitivity to external magnetic field, but it is only in the simplest organisms that the sensing mechanism is understood. Here we report on behavioural experiments where American cockroaches (Periplaneta americana) were subjected to periodically rotated external magnetic fields with a period of 10 min. The insects show increased activity when placed in a periodically rotated Earth-strength field, whereas this effect is diminished in a twelve times stronger periodically rotated field. We analyse established models of magnetoreception, the magnetite model and the radical pair model, in light of this adaptation result. A broad class of magnetite models, based on single-domain particles found in insects and assumption that better alignment of magnetic grains towards the external field yields better sensing and higher insect activity, is shown to be excluded by the measured data. The radical-pair model explains the data if we assume that contrast in the chemical yield on the order of one in a thousand is perceivable by the animal, and that there also exists a threshold value for detection, attained in an Earth-strength field but not in the stronger field.Kai Sheng LeeRainer DumkeTomasz PaterekNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kai Sheng Lee Rainer Dumke Tomasz Paterek Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
description	Abstract Many animals display sensitivity to external magnetic field, but it is only in the simplest organisms that the sensing mechanism is understood. Here we report on behavioural experiments where American cockroaches (Periplaneta americana) were subjected to periodically rotated external magnetic fields with a period of 10 min. The insects show increased activity when placed in a periodically rotated Earth-strength field, whereas this effect is diminished in a twelve times stronger periodically rotated field. We analyse established models of magnetoreception, the magnetite model and the radical pair model, in light of this adaptation result. A broad class of magnetite models, based on single-domain particles found in insects and assumption that better alignment of magnetic grains towards the external field yields better sensing and higher insect activity, is shown to be excluded by the measured data. The radical-pair model explains the data if we assume that contrast in the chemical yield on the order of one in a thousand is perceivable by the animal, and that there also exists a threshold value for detection, attained in an Earth-strength field but not in the stronger field.
format	article
author	Kai Sheng Lee Rainer Dumke Tomasz Paterek
author_facet	Kai Sheng Lee Rainer Dumke Tomasz Paterek
author_sort	Kai Sheng Lee
title	Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
title_short	Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
title_full	Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
title_fullStr	Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
title_full_unstemmed	Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches
title_sort	numerical tests of magnetoreception models assisted with behavioral experiments on american cockroaches
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f3aaf3f0f29f49af9666a05c543d6b43
work_keys_str_mv	AT kaishenglee numericaltestsofmagnetoreceptionmodelsassistedwithbehavioralexperimentsonamericancockroaches AT rainerdumke numericaltestsofmagnetoreceptionmodelsassistedwithbehavioralexperimentsonamericancockroaches AT tomaszpaterek numericaltestsofmagnetoreceptionmodelsassistedwithbehavioralexperimentsonamericancockroaches
_version_	1718389360246652928

Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches

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