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劳动分工的起源是脱离了殖民动物的多态性
Sarah Leventhal1, Stewart M Edie2, Rebecca Morrison3
1Department of Geological Sciences and University of Colorado Museum of Natural History, University of Colorado Boulder, Boulder, UCB 265, CO 80309, USA.
PNAS nexus
|November 11, 2024
概括
殖民生物中的劳动分工是通过形态扩张进化而来的,而不仅仅是任务分工. 不食的成员得到了食的成员的支持,这表明几何和生理因素是关键因素.
科学领域:
- 进化生物学 进化生物学
- 古生物学的古生物学
- 殖民生物殖民生物
背景情况:
- 劳动分工对于殖民真核生物的生态成功至关重要.
- 劳动分工的进化起源尚未完全理解.
- 现有的假设经常提出一个"经济"模型的任务分区.
研究的目的:
- 为分工的起源提出一个替代模型.
- 为了解释殖民地内部新功能的演变.
- 为了研究化石动物Wilbertopora的分工.
主要方法:
- 从白纪时期的Wilbertopora殖民地对形态差异的分析.
- 开发一个简单的模型的生理连接之间的殖民地成员.
- 观察到的形态变化与传统经济模型的比较.
主要成果:
- 在Wilbertopora中,多态性涉及到将形态扩展到新的形态空间,而不是简单的分区.
- 在两个不同的脉冲期间,形态差异增加,与养功能的丧失相吻合.
- 一个模型显示,不食的成员可以通过生理联系得到食成员的支持.
结论:
- 多态化和分工的演变可能涉及放松形态约束和探索新功能.
- 几何和生理连接是模块化生物体中分工的潜在先决条件.
- 一个简单的分区模型不足以解释生物分工的广泛出现.
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