Finnegan, SR;
Mondani, M;
Fowler, K;
Pomiankowski, A;
(2021)
Meiotic drive does not cause condition-dependent reduction of the sexual ornament in stalk-eyed flies.
Journal of Evolutionary Biology
, 34
(5)
pp. 736-745.
10.1111/jeb.13770.
Preview |
Text
Pomiankowski_jeb.13770.pdf - Published Version Download (752kB) | Preview |
Abstract
Meiotic drive systems are associated with low frequency chromosomal inversions. These are expected to accumulate deleterious mutations due to reduced recombination and low effective population size. We test this prediction using the “sex‐ratio” (SR) meiotic drive system of the Malaysian stalk‐eyed fly Teleopsis dalmanni. SR is associated with a large inversion (or inversions) on the X chromosome. In particular, we study eyespan in males carrying the SR chromosome, as this trait is a highly exaggerated, sexually dimorphic trait, known to have heightened condition‐dependent expression. Larvae were raised in low and high larval food stress environments. SR males showed reduced eyespan under the low and high stress treatments but there was no evidence of a condition‐dependent decrease in eyespan under high stress. Similar but more complex patterns were observed for female eyespan, with evidence of additivity under low stress and heterosis under high stress. These results do not support the hypothesis that reduced sexual ornament size in meiotic drive males is due to a condition‐dependent response to the putative increase in mutation load. Instead, reduced eyespan likely reflects compensatory resource allocation to different traits in response to drive‐mediated destruction of sperm.
| Type: | Article |
|---|---|
| Title: | Meiotic drive does not cause condition-dependent reduction of the sexual ornament in stalk-eyed flies |
| Location: | Switzerland |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/jeb.13770 |
| Publisher version: | https://doi.org/10.1111/jeb.13770 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | condition dependence, meiotic drive, sexual ornament, sexual selection, stalk-eyed fly |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10121517 |
Archive Staff Only
 |
View Item |
