亲戚识别和掠夺在食人线虫 Pristionchus pacificus 中塑造了集体行为
Fumie Hiramatsu1,2, James W Lightfoot1
1Max Planck Research Group Genetics of Behavior, Max Planck Institute for Neurobiology of Behavior-caesar, Bonn, Germany.
PLoS genetics
|December 14, 2023
概括
像Pristionchus pacificus这样的虫与亲属聚集在一起,而不是陌生人. 这种亲属识别影响集体行为,突变取消了掠食,使竞争对手菌株之间聚合.
科学领域:
- 行为生态学 行为生态学
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 亲属识别是跨物种的关键行为适应,影响社会互动.
- 虽然在Pristionchus pacificus中已知分子机制,但它们在集体行为中的作用仍然未被探索.
- 高海拔的P. pacificus群体表现出丰富的聚合,为研究亲属识别对群体行为的影响提供了一个模型.
研究的目的:
- 研究亲属识别系统如何影响P. pacificus.中的群体行为.
- 确定亲属识别是否会影响P. pacificus.中的聚合模式.
- 探索与Caenorhabditis elegans的物种间相互作用和聚合动态.
主要方法:
- 采用P. pacificus菌株具有不同基因相关性的双对聚合试验.
- 在CRISPR/Cas9基因编辑中突变Ppa-nhr-40并消除掠夺性行为.
- 在P. pacificus和C. elegans之间进行跨物种聚合测试.
主要成果:
- P. pacificus 最好与亲属聚合,与远距离相关的菌株之间的聚合减少.
- 突变Ppa-nhr-40以消除掠食,允许竞争对手P. pacificus菌株之间的聚合.
- 跨物种测定显示P. pacificus主导聚合物,捕食者破坏C. elegans聚合.
结论:
- 亲属识别显著影响了P. pacificus的集体行为,促进了亲戚关系.
- 捕食和竞争是塑造线虫聚合动态的关键因素.
- 这项研究揭示了以前未知的线虫集体行为的组成部分.
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