热应激对后代的影响在父母的照顾中复合
Tanzil Gaffar Malik1, Mu-Tzu Tsai1, Benjamin James Mervyn Jarrett2
1National Taiwan University, Taipei, Taiwan.
Proceedings. Biological sciences
|March 5, 2025
概括
气候变化热浪扰乱了父母在埋葬甲虫的照顾. 在尸体准备和后代供应期间的热应激显著降低了生殖成功和后代质量.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 动物行为 动物行为
背景情况:
- 气候变化引起的热浪对生物多样性构成重大威胁.
- 父母的照顾行为对于后代的生存至关重要,但可以被环境压力因素 (如热量) 干扰.
- 以前的研究表明,关于家长护理对不利条件的缓冲能力的结果是不同的,可能是由于对护理组件的差异性影响.
研究的目的:
- 为了研究热应激对父母照顾和后代表现的影响,埋葬甲虫 (Nicrophorus nepalensis) 的表现.
- 为了区分热应激对化前 (体准备) 和化后 (后代供应) 家长照顾阶段的影响.
- 了解家长照顾的不同组成部分如何应对和缓冲温度压力.
主要方法:
- 埋葬甲虫受到控制 (17.8°C) 和热应激 (21.8°C) 的条件.
- 在受控制或热应激条件下准备的尸体被相互转移到在两个温度制度下繁殖的雌性动物中.
- 测量了生殖成功,女性的能量消耗 (体重损失),后代的大小和死亡率.
主要成果:
- 影响只有一段父母照顾期 (化前或后) 的热浪并没有显著改变生殖成功.
- 在化前和后经历热浪时,繁殖成功下降.
- 雌性在热应激下储备时显示出更多的能源消耗.
- 尸体准备过程中的热应激对后代产生了持久的负面影响,导致成年人体型较小和死亡率较高.
结论:
- 父母护理组件对热应激有不同的脆弱性.
- 在关键的家长护理阶段,热力压力对生殖成功产生重大影响.
- 在早期护理阶段的热应激会对后代的发育和生存产生长期的有害影响,强调需要对护理组件进行单独检查.
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