ID | 61365 |
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Author |
Abe, Masato S.
Center for Advanced Intelligence Project, RIKEN
Matsumura, Kentarou
Graduate School of Environmental and Life Science, Okayama University
Yoshii, Taishi
Graduate School of Natural Science and Technology, Okayama University
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Miyatake, Takahisa
Graduate School of Environmental and Life Science, Okayama University
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Abstract | Many species show rhythmicity in activity, from the timing of flowering in plants to that of foraging behavior in animals. The free-running periods and amplitude (sometimes called strength or power) of circadian rhythms are often used as indicators of biological clocks. Many reports have shown that these traits are highly geographically variable, and interestingly, they often show latitudinal or longitudinal clines. In many cases, the higher the latitude is, the longer the free-running circadian period (i.e., period of rhythm) in insects and plants. However, reports of positive correlations between latitude or longitude and circadian rhythm traits, including free-running periods, the power of the rhythm and locomotor activity, are limited to certain taxonomic groups. Therefore, we collected a cosmopolitan stored-product pest species, the red flour beetle Tribolium castaneum, in various parts of Japan and examined its rhythm traits, including the power and period of the rhythm, which were calculated from locomotor activity. The analysis revealed that the power was significantly lower for beetles collected in northern areas than southern areas in Japan. However, it is worth noting that the period of circadian rhythm did not show any clines; specifically, it did not vary among the sampling sites, despite the very large sample size (n = 1585). We discuss why these cline trends were observed in T. castaneum.
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Published Date | 2021-01-14
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Publication Title |
PLoS ONE
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Volume | volume16
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Issue | issue1
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Publisher | Public Library of Science
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Start Page | e0245115
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ISSN | 1932-6203
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2021 Abe et al.
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File Version | publisher
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DOI | |
Related Url | isVersionOf https://doi.org/10.1371/journal.pone.0245115
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License | https://creativecommons.org/licenses/by/4.0/
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Funder Name |
Japan Society for the Promotion of Science
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助成番号 | 16K14810
18H02510
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