性比扭曲的微生物是否阻碍了抗农药的进化? 一个实验性的测试
Adam M Fisher1,2, Amelia-Rose V McKenzie1, Tom A R Price3
1School of Biological and Behavioural Sciences Queen Mary University of London London UK.
Evolutionary applications
|October 15, 2024
概括
性比扭曲微生物 (SRDMs) 通过减少种群规模来限制农药适应. 这项研究表明,SRDMs可以阻碍关节动物适应农药,但不是通过限制基因流动.
科学领域:
- 进化生物学是进化的生物学.
- 害虫管理 害虫管理 害虫管理
- 微生物生态学 微生物生态学
背景情况:
- 关节动物害虫对农药的耐药性威胁到人类健康和粮食安全.
- 了解限制农药耐药性演变的机制至关重要.
- 性比扭曲微生物 (SRDMs) 理论上通过减少种群规模和基因流动来限制适应.
研究的目的:
- 实验测试SRDM如何限制关节动物适应农药.
- 为了区分SRDMs对性别比率和基因流动的影响.
- 调查性别偏见农药敏感性的作用.
主要方法:
- 一个使用Drosophila melanogaster种群的完全因数实验.
- 在SRDMs的存在和缺席下操纵成年人性别比率.
- 六代农药暴露来评估适应性.
主要成果:
- 性比均的人群在六代后表现出更高的农药耐药性.
- 独立于性别比率变化,SRDMs没有影响农药耐药性.
- 男性对农药的敏感性比女性更大.
结论:
- 经验证据证实,SRDMs通过性别比率扭曲来限制农药适应.
- 质疑SRDMs通过破坏基因流动对适应的理论影响.
- 性别特定的农药敏感性是适应的一个重要因素.
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