珀金斯海感染的时空模式是由切萨皮克湾的环境变化驱动的
Mariah L Kachmar1, Chelsea Bergman1, Harold J Schreier1,2
1Department of Marine Biotechnology, Institute of Marine and Environmental Technology, University of Maryland Baltimore County, Baltimore, MD 21202, USA.
Diseases of aquatic organisms
|November 20, 2025
概括
气候变化影响切萨皮克湾的贝类. 盐度下降和温度上升影响病 (Perkinsus marinus) 的流行率和强度,观察到区域差异. 冬季盐度是影响秋季感染的关键因素.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 渔业科学 渔业科学
背景情况:
- 切萨皮克湾的贝类渔业和水产养殖历来容易受到疾病和气候事件的影响.
- 气候驱动的温度和盐度变化显著影响宿主寄生虫相互作用和疾病爆发.
- 东部 (Crassostrea virginica) 和它的寄生虫Perkinsus marinus是研究这些动态的关键模型系统.
研究的目的:
- 调查温度,盐度,以及切萨皮克湾Perkinsus marinus的分布和丰度之间的关系.
- 确定气候变量如何影响中的P. marinus流行和强度.
- 确定影响病动态的季节性模式和区域环境因素.
主要方法:
- 利用了30年的环境数据 (温度,盐度) 和切萨皮克湾P. marinus感染调查.
- 分析了寄生虫流行和强度的长期趋势和季节性变化.
- 与疾病指标相关联的月度环境参数,以确定关键驱动因素.
主要成果:
- 发现P. marinus感染强度/流行率和温度升高,盐度降低之间存在显著的正相关性.
- 观察到海湾的P. marinus流行和强度总体下降,主要与2003-2020年盐度下降趋势有关.
- 盐度对疾病模式具有主导性的全年影响,特别是在春晚/夏初,而冬季的盐度对秋季流行有重大影响.
结论:
- 气候变化,特别是盐度下降,正在改变切萨皮克湾的P. marinus动态,导致整体疾病负担降低,但区域差异很大.
- 盐度,特别是冬季水平,在调节寄生虫的流行和强度方面起着至关重要的作用,有时比温度更重要.
- 持续监测海洋疾病对于了解和管理气候变化对贝类健康和水产养殖的影响至关重要.
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