Latitudinal cline of chronotype
Abstract The rotation of the Earth around its own axis and around the sun determines the characteristics of the light/dark cycle, the most stable and ancient 24 h temporal cue for all organisms. Due to the tilt in the earth’s axis in relation to the plane of the earth’s orbit around the sun, sunligh...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2017-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-05797-w |
| _version_ | 1818856172270125056 |
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| author | Mario André Leocadio-Miguel Fernando Mazzili Louzada Leandro Lourenção Duarte Roberta Peixoto Areas Marilene Alam Marcelo Ventura Freire John Fontenele-Araujo Luiz Menna-Barreto Mario Pedrazzoli |
| author_facet | Mario André Leocadio-Miguel Fernando Mazzili Louzada Leandro Lourenção Duarte Roberta Peixoto Areas Marilene Alam Marcelo Ventura Freire John Fontenele-Araujo Luiz Menna-Barreto Mario Pedrazzoli |
| author_sort | Mario André Leocadio-Miguel |
| collection | DOAJ |
| description | Abstract The rotation of the Earth around its own axis and around the sun determines the characteristics of the light/dark cycle, the most stable and ancient 24 h temporal cue for all organisms. Due to the tilt in the earth’s axis in relation to the plane of the earth’s orbit around the sun, sunlight reaches the Earth differentially depending on the latitude. The timing of circadian rhythms varies among individuals of a given population and biological and environmental factors underlie this variability. In the present study, we tested the hypothesis that latitude is associated to the regulation of circadian rhythm in humans. We have studied chronotype profiles across latitudinal cline from around 0° to 32° South in Brazil in a sample of 12,884 volunteers living in the same time zone. The analysis of the results revealed that humans are sensitive to the different sunlight signals tied to differences in latitude, resulting in a morning to evening latitudinal cline of chronotypes towards higher latitudes. |
| first_indexed | 2024-12-19T08:20:16Z |
| format | Article |
| id | doaj.art-19f1acb625614fce88f31479ecaa4078 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T08:20:16Z |
| publishDate | 2017-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-19f1acb625614fce88f31479ecaa40782022-12-21T20:29:25ZengNature PortfolioScientific Reports2045-23222017-07-01711610.1038/s41598-017-05797-wLatitudinal cline of chronotypeMario André Leocadio-Miguel0Fernando Mazzili Louzada1Leandro Lourenção Duarte2Roberta Peixoto Areas3Marilene Alam4Marcelo Ventura Freire5John Fontenele-Araujo6Luiz Menna-Barreto7Mario Pedrazzoli8Universidade Federal do Rio Grande do Norte, Departamento de FisiologiaUniversidade Federal do Paraná, Departamento de FisiologiaUniversidade Federal do Recôncavo da Bahia, Centro de Ciência da SaúdeUniversidade de São Paulo, Escola de Artes, Ciências e HumanidadesUniversidade Federal de Pelotas, Departamento de Farmacologia e FisiologiaUniversidade de São Paulo, Escola de Artes, Ciências e HumanidadesUniversidade Federal do Rio Grande do Norte, Departamento de FisiologiaUniversidade de São Paulo, Escola de Artes, Ciências e HumanidadesUniversidade de São Paulo, Escola de Artes, Ciências e HumanidadesAbstract The rotation of the Earth around its own axis and around the sun determines the characteristics of the light/dark cycle, the most stable and ancient 24 h temporal cue for all organisms. Due to the tilt in the earth’s axis in relation to the plane of the earth’s orbit around the sun, sunlight reaches the Earth differentially depending on the latitude. The timing of circadian rhythms varies among individuals of a given population and biological and environmental factors underlie this variability. In the present study, we tested the hypothesis that latitude is associated to the regulation of circadian rhythm in humans. We have studied chronotype profiles across latitudinal cline from around 0° to 32° South in Brazil in a sample of 12,884 volunteers living in the same time zone. The analysis of the results revealed that humans are sensitive to the different sunlight signals tied to differences in latitude, resulting in a morning to evening latitudinal cline of chronotypes towards higher latitudes.https://doi.org/10.1038/s41598-017-05797-w |
| spellingShingle | Mario André Leocadio-Miguel Fernando Mazzili Louzada Leandro Lourenção Duarte Roberta Peixoto Areas Marilene Alam Marcelo Ventura Freire John Fontenele-Araujo Luiz Menna-Barreto Mario Pedrazzoli Latitudinal cline of chronotype Scientific Reports |
| title | Latitudinal cline of chronotype |
| title_full | Latitudinal cline of chronotype |
| title_fullStr | Latitudinal cline of chronotype |
| title_full_unstemmed | Latitudinal cline of chronotype |
| title_short | Latitudinal cline of chronotype |
| title_sort | latitudinal cline of chronotype |
| url | https://doi.org/10.1038/s41598-017-05797-w |
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