海洋热浪对双动物在繁殖过程中的影响
Xiaoning Zang1, Ke Yang2, Hongyu Liang3
1Fisheries College, Guangdong Ocean University, Zhanjiang, China.
Marine environmental research
|December 25, 2025
概括
海洋热浪 (MHWs) 严重影响的繁殖和生存. 这些事件导致显著的死亡率和不可逆转的淋巴腺损伤,威胁到鱼种群和渔业.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化 生态学 生态学
- 水产养殖科学 水产养殖科学
背景情况:
- 由于气候变化,海洋热浪 (MHWs) 的频率和强度正在增加.
- 两动物面临着来自MHWs的重大威胁,但对生殖的影响尚不清楚.
- 生殖条件对于双动物的招募和种群稳定至关重要.
研究的目的:
- 评估加强MHWs对 Ruditapes philippinarum的繁殖的影响.
- 在模拟的MHW条件下调查鱼的生理反应和生存率.
主要方法:
- 鱼 (Ruditapes philippinarum) 被暴露在模拟的海洋热浪情景中 (22°C-32°C 5天,然后在22°C恢复5天).
- 分析了生存率,淋巴状况以及关键代谢和抗氧化酶的活动.
- 研究了与抗氧化剂和免疫防御系统相关的基因表达.
主要成果:
- 在严重的MHW条件下,生存率显著下降至56%.
- 在雄性和雌性鱼中观察到不可逆转的淋巴腺功能障碍.
- 生理反应包括最初的下降,随后能量代谢酶的显著增加和改变的抗氧化剂/免疫基因表达.
结论:
- 菲律宾鲁迪塔佩斯 (Ruditapes philippinarum) 具有生理性可塑性,但由于在繁殖过程中强化MHW而遭受严重后果.
- 增加的死亡率和淋巴腺损伤对鱼招募和维持人口构成重大风险.
- 研究结果强调了商业重要双动物对气候变化对繁殖成功的影响的脆弱性.
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