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一个生命早期的挑战:成为野生鸟中的一个大兄弟姐妹
Axelle Delaunay1, Océane Cossu-Doye1, Berta Roura-Torres1,2,3
1Institute of Evolutionary Biology of Montpellier (ISEM), Université de Montpellier, CNRS, IRD, EPHE, Montpellier, France.
Royal Society open science
|July 25, 2024
概括
一个年轻的兄弟姐妹的出生突然停止了断奶,并减少了母亲对野生鸟中老年幼的照顾. 尽管如此,老年青少年的压力行为没有增加.
科学领域:
- 灵长类动物的行为
- 哺乳动物的生殖策略
- 社会发展 社会发展 社会发展
背景情况:
- 大多数单性哺乳动物都有较年轻的兄弟姐妹,影响较年长的后代.
- 过渡到兄弟姐妹关系 (TTS) 是具有挑战性的,但在野生灵长类动物中没有得到充分研究.
- 在TTS期间,预计会有母亲的照顾转移,这会影响青少年的发育.
研究的目的:
- 在曼德里尔的TTS期间调查母亲护理和母亲与青少年关系的变化.
- 将经历TTS的青少年与没有经历TTS的青少年的行为反应进行比较.
- 了解兄弟姐妹出生对青少年社会行为和母亲投资的影响.
主要方法:
- 从野生鸟种群收集行为数据.
- 经历兄弟姐妹分娩的青少年与对照组进行了比较.
- 分析母亲的归属和青少年的社会互动.
主要成果:
- TTS导致断断奶的突然停止,并减少了母亲的归属性.
- 年轻的雄性动物与母亲的交往减少;雌性动物增加了理.
- 青少年没有表现出增加的冲突或焦虑行为,尽管减少了母亲的照顾.
结论:
- 短暂的间隔间隔对单性灵长类动物的幼虫生存构成风险.
- 青少年对TTS的反应是性别特异的,表明不同的应对机制.
- 通过各种灵长类动物生命史对TTS的进一步研究至关重要.
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