Pomiankowski, Andrew;
Meade, Lara;
Bates, Sade;
(2023)
Meiotic drive does not impede success in sperm competition in the stalkeyed fly, Teleopsis dalmanni.
Evolution
, 77
(10)
pp. 2326-2333.
10.1093/evolut/qpad149.
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Abstract
Male X-linked meiotic drive systems, which cause the degeneration of Y-bearing sperm, are common in the Diptera. Sperm killing is typically associated with fitness costs that arise from the destruction of wildtype sperm and collateral damage to maturing drive sperm, resulting in poor success under sperm competition. We investigate X-linked meiotic drive fertility in the stalk-eyed fly, Teleopsis dalmanni. Drive male paternity was measured in double mating trials under sperm competition against a wildtype male. Drive males sired the same number of offspring as wildtype males, both when mated first or second. This is the first evidence that drive males can compete equally with non-drive males in double matings, challenging the assumption that drive males inevitably suffer reduced fertility. The finding is in accord with previous work showing that the number of sperm per ejaculate transferred to females during non-competitive single matings does not differ between drive and wildtype males, which is likely due to the adaptive evolution of enlarged testes in drive males. Future experiments will determine whether the competitive ability of drive males is maintained under higher rates of female remating likely to be experienced in nature.
| Type: | Article |
|---|---|
| Title: | Meiotic drive does not impede success in sperm competition in the stalkeyed fly, Teleopsis dalmanni |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/evolut/qpad149 |
| Publisher version: | https://doi.org/10.1093/evolut/qpad149 |
| Language: | English |
| Additional information: | © The Author(s) 2023. Published by Oxford University Press on behalf of The Society for the Study of Evolution (SSE). This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Meiotic drive, stalk-eyed fly, sperm competition, multiple mating |
| 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-pp.ucl.ac.uk/id/eprint/10175583 |
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