ID | 57915 |
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Author |
Matsumura, Kentarou
Graduate School of Environmental and life Science, Okayama University
Miyatake, Takahisa
Graduate School of Environmental and life Science, Okayama University
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Abstract | Tonic immobility is an adaptive anti-predator behaviour observed in many species. This anti-predator behaviour is often correlated with a species' movement motivation, so a relationship between the duration of tonic immobility and morphological traits supporting movement would be expected. Using the red flour beetle, Tribolium castaneum, we carried out two-way artificial selection for the duration of tonic immobility over more than 43 generations, establishing populations with longer (L) and shorter (S) tonic immobility durations compared to those of a non-selected control (C) population. Here, we investigated differences in walking motivation and leg length between the selected populations. Walking motivation was significantly higher in beetles from the S population than that in those from the L population. Moreover, S-population beetles of both sexes had significantly longer legs than those from L and C populations. The present results suggest the evolution of longer legs in response to selection pressure for a shorter duration of tonic immobility in T. castaneum.
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Keywords | anti-predator strategy
tonic immobility
artificial selection
leg
Tribolium castaneum
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Note | This fulltext will be available in Oct 2020
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Published Date | 2019-10
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Publication Title |
Behaviour
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Volume | volume157
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Issue | issue1
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Publisher | Brill Academic Publishers
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Start Page | 17
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End Page | 31
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ISSN | 0005-7959
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NCID | AA00558701
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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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File Version | author
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Related Url | isVersionOf https://doi.org/10.1163/1568539X-00003579
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