Parental care results in a greater mutation load, for which it is also a phenotypic antidote
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- Sonia Pascoal
- Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
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- Hideyasu Shimadzu
- Department of Mathematical Sciences, Loughborough University, Leicestershire LE11 3TU, UK
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- Rahia Mashoodh
- Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
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- Rebecca M. Kilner
- Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
書誌事項
- 公開日
- 2023-05-24
- 資源種別
- journal article
- 権利情報
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- https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
- DOI
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- 10.1098/rspb.2023.0115
- 10.1101/2022.05.05.490718
- 公開者
- The Royal Society
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説明
<jats:p> Benevolent social behaviours, such as parental care, are thought to enable mildly deleterious mutations to persist. We tested this prediction experimentally using the burying beetle <jats:italic>Nicrophorus vespilloides</jats:italic> , an insect with biparental care. For 20 generations, we allowed replicate experimental burying beetle populations to evolve either with post-hatching care (‘Full Care’ populations) or without it (‘No Care’ populations). We then established new lineages, seeded from these experimental populations, which we inbred to assess their mutation load. Outbred lineages served as controls. We also tested whether the deleterious effects of a greater mutation load could be concealed by parental care by allowing half the lineages to receive post-hatching care, while half did not. We found that inbred lineages from the Full Care populations went extinct more quickly than inbred lineages from the No Care populations—but only when offspring received no post-hatching care. We infer that Full Care lineages carried a greater mutation load, but that the associated deleterious effects on fitness could be overcome if larvae received parental care. We suggest that the increased mutation load caused by parental care increases a population's dependence upon care. This could explain why care is seldom lost once it has evolved. </jats:p>
収録刊行物
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- Proceedings of the Royal Society B: Biological Sciences
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Proceedings of the Royal Society B: Biological Sciences 290 (1999), 2023-05-24
The Royal Society
