在恒定温度下,长期养的法兰克林尼拉西部是否会增加温度耐受性?
Lin Shu1, Hongbo Li2, Yawen Chang1,3
1Institute of Applied Entomology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China.
Insects
|June 25, 2025
概括
在14年内,化改善了西部花 (Frankeniella occidentalis) 的极端温度适应能力. 这种进化独立于环境变化发生,这表明了昆虫种群的新研究途径.
科学领域:
- 昆虫生理学和适应能力
- 进化生物学是进化的生物学.
- 害虫管理 害虫管理 害虫管理
背景情况:
- 西方花 (Frankeniella occidentalis) 由于其显著的温度适应性,具有广泛的分布.
- 环境变化通常被认为是昆虫热适应的主要驱动因素.
- 以前的研究表明,化可以提高昆虫对极端温度的耐受性.
研究的目的:
- 为了研究弗兰克尼埃拉西北方种群在14年内化的温度耐受性的变化.
- 评估化的作用,独立于环境波动,在塑造昆虫的热适应.
- 为了确定热耐受性演变的阶段和性别特异性差异.
主要方法:
- 在恒定的条件下利用了长期实验室培养的Frankeniella occidentalis (2008-2022) 种群.
- 在高温和低温压力后,通过比较生存数据和不同世代 (2010,2016,2022) 的中位数致命温度 (LT50) 值来评估温度耐受性.
- 在极端温度 (-14°C和-15°C) 中分析了特定阶段和性别的生存率.
主要成果:
- 观察到寒冷耐受性的显著改善,LT50值从 -12.5°C下降到 -13.4°C,女性和 -11.5°C下降到 -13.0°C,男性.
- 成年男性在-14°C和-15°C的温度下比女性的生存率更高.
- 热耐受性在第二阶段幼虫中显著增加,DLT50为+4.1°C.
结论:
- 在稳定的实验室条件下化导致了弗兰克尼埃拉西欧地利斯 (Frankeniella occidentalis) 耐热度的显著,环境独立的进化变化.
- 证明了适应极端温度的特定阶段和性别的变化.
- 这些发现为昆虫种群中环境独立的进化途径开辟了新的研究方向.
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