亲属关系是双刃剑:埋葬甲虫幼虫之间的亲属关系可以促进生长,但会增加死亡率
Paul Huber1, Daniel Wittmann1, Sandra Steiger1
1Evolutionary Animal Ecology, University of Bayreuth, Bayreuth, Germany.
Biology letters
|September 9, 2025
概括
埋葬甲虫幼虫之间的高度相关性促进了早期生长,但增加了以后的死亡率,揭示了社会昆虫发育中的复杂的健康权衡. 这突出了合作的好处和兄弟姐妹互动的成本.
科学领域:
- 进化生物学 进化生物学
- 行为生态学 行为生态学
- 昆虫生态学 昆虫生态学
背景情况:
- 亲属关系影响社会互动,具有潜在的好处,如合作和成本,如加强竞争或疾病易感性.
- 亲属关系对后代健康的净影响是复杂的,并未完全理解,特别是在具有挑战性的环境中.
- 埋葬甲虫 (Nicrophorus vespilloides) 提供了一个模型系统,由于父母的任择照顾和在微生物丰富的条件下发展.
研究的目的:
- 为了研究埋葬甲虫中后代亲属关系的健康后果.
- 通过在没有父母影响的情况下培养幼虫,将亲属关系的影响与父母的照顾脱而出.
- 评估亲属关系如何影响幼虫在压力环境中的生长和生存.
主要方法:
- Nicrophorus vespilloides的幼虫是在完全兄弟姐妹和无关联个体的中培养的.
- 父母的照顾在实验中被删除,以隔离后代的相关性影响.
- 在整个幼虫发育过程中,监测了生长率和生存率.
主要成果:
- 与完全兄弟姐妹的幼虫相比,与无关的幼虫相比,在早期体重增加的速度更快.
- 然而,完全兄弟姐妹的子在发育后期经历了更高的死亡率.
- 这些结果表明,与高度相关性相关的优点和缺点.
结论:
- 高相关性可以促进合作利益,从而改善早期增长.
- 亲属关系也带来了代价,可能是通过降低社会免疫能力和增加晚期死亡率.
- 这项研究表明,亲属关系对后代健康的好处和成本的复杂相互作用.
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