論文 - 詳細
| RRC ID | 50269 |
|---|---|
| 著者 | Hanschen ER, Herron MD, Wiens JJ, Nozaki H, Michod RE. |
| タイトル | Repeated evolution and reversibility of self-fertilization in the volvocine green algae. |
| ジャーナル | Evolution |
| Abstract |
Outcrossing and self-fertilization are fundamental strategies of sexual reproduction, each with different evolutionary costs and benefits. Self-fertilization is thought to be an evolutionary "dead-end" strategy, beneficial in the short term but costly in the long term, resulting in self-fertilizing species that occupy only the tips of phylogenetic trees. Here, we use volvocine green algae to investigate the evolution of self-fertilization. We use ancestral-state reconstructions to show that self-fertilization has repeatedly evolved from outcrossing ancestors and that multiple reversals from selfing to outcrossing have occurred. We use three phylogenetic metrics to show that self-fertilization is not restricted to the tips of the phylogenetic tree, a finding inconsistent with the view of self-fertilization as a dead-end strategy. We also find no evidence for higher extinction rates or lower speciation rates in selfing lineages. We find that self-fertilizing species have significantly larger colonies than outcrossing species, suggesting the benefits of selfing may counteract the costs of increased size. We speculate that our macroevolutionary results on self-fertilization (i.e., non-tippy distribution, no decreased diversification rates) may be explained by the haploid-dominant life cycle that occurs in volvocine algae, which may alter the costs and benefits of selfing. |
| 巻・号 | 72(2) |
| ページ | 386-398 |
| 公開日 | 2018-2-1 |
| DOI | 10.1111/evo.13394 |
| PMID | 29134623 |
| PMC | PMC5796843 |
| MeSH | Biological Evolution* Self-Fertilization* Volvox / genetics* |
| IF | 3.698 |
| 引用数 | 13 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 7 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 藻類 | NIES-566 NIES-571 NIES-564 NIES-418 NIES-2457 NIES-1711 NIES-1713 NIES-1038 NIES-653 NIES-851 NIES-872 NIES-2428 NIES-541 NIES-732 NIES-544 NIES-3780 NIES-568 NIES-1362 NIES-460 NIES-856 NIES-456 NIES-3388 NIES-2738 NIES-543 NIES-545 NIES-574 NIES-572 |