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ID 57365
Author
Matsumura, Kentarou Graduate School of Environmental and Life Science, Okayama University
Archer, C Ruth Centre for Ecology & Conservation, University of Exeter
Hosken, David J Centre for Ecology & Conservation, University of Exeter
Miyatake, Takahisa Graduate School of Environmental and Life Science, Okayama University ORCID Kakenhi
Abstract
Securing matings is a key determinant of fitness, and in many species, males are the sex that engages in mate searching. Searching for mates is often associated with increased mobility. This elevated investment in movement is predicted to trade-off with sperm competitiveness, but few studies have directly tested whether this trade-off occurs. Here, we assessed whether artificial selection on mobility affected sperm competitiveness and mating behavior, and if increased mobility was due to increased leg length in red flour beetles (Tribolium castaneum). We found that, in general, males selected for decreased mobility copulated for longer, stimulated females more during mating, and tended to be better sperm competitors. Surprisingly, they also had longer legs. However, how well males performed in sperm competition depended on females. Males with reduced mobility always copulated for longer than males with high mobility, but this only translated into greater fertilization success in females from control populations and not the selection populations (i.e. treatment females). These results are consistent with a mate-searching/mating-duration trade-off and broadly support a trade-off between mobility and sperm competitiveness.
Keywords
leg length
mate searching
morphology
sperm competition,
trade-off
Tribolium castaneum
walking
Note
This is an article published by Oxford University Press
This fulltext will be available in Sep 2020
This work was supported by a grant from Japan Society for the Promotion of Science (KAKENHI) 16J04458 to K.M., 17H05976, and 18H02510 to T.M.
Published Date
2019-07-05
Publication Title
Behavioral Ecology
Publisher
Oxford University Press
Start Page
1
End Page
8
ISSN
00018244
NCID
AA00558621
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
File Version
author
DOI
Related Url
isVersionOf https://doi.org/10.1093/beheco/arz110
Citation
Kentarou Matsumura, C Ruth Archer, David J Hosken, Takahisa Miyatake, Artificial selection on walking distance suggests a mobility-sperm competitiveness trade-off, Behavioral Ecology, , arz110, https://doi.org/10.1093/beheco/arz110