电子DNA测试揭示了泰国鱼群动态的令人惊的发现
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Maslin Osathanunkul1, Chatmongkon Suwannapoom2
1Department of Biology, Chiang Mai University, Chiang Mai, Thailand.
Heliyon
|July 7, 2023
概括
随着COVID-19的封锁,泰国的过度捕捞的石鱼 (Garra cambodgiensis) 意外地恢复了. 环境DNA (eDNA) 监测显示,封锁后鱼类数量增加,强调eDNA是有价值的保护工具.
科学领域:
- 环境DNA (eDNA) 分析
- 水生生态学 水生生态学
- 保护生物学 保护生物学
背景情况:
- COVID-19大流行扰乱了全球经济,包括水产养殖和渔业,影响了物种管理的基本数据收集.
- 过度捕捞导致泰国石鱼 (Garra cambodgiensis) 种群减少,需要有效的监测策略.
- 传统的鱼类监测方法面临着可访问性和成本方面的挑战,与流行病相关的限制进一步复杂化了这一问题.
研究的目的:
- 在COVID-19限制措施之前和之后,调查泰国石鱼 (Garra cambodgiensis) 的分散和丰富程度.
- 评估环境DNA (eDNA) 作为监测大流行期间和之后鱼群的工具的有效性.
- 为了确定COVID-19封锁是否对G. cambodgiensis种群的恢复产生了积极影响.
主要方法:
- 在Chao Phraya河流域的28个地点收集了水样.
- 量化聚合酶链反应 (qPCR) 用于检测水样中的加拉cambodgiensis eDNA.
- 在 (2018-2019) 之前收集的样本和 (2021) 后收集的样本之间的eDNA度进行了比较,COVID-19封锁.
主要成果:
- 在252个收集的水样中,Garra cambodgiensis的eDNA在78个水样中被检测到.
- 与2018年和2019年的样本相比,在2021年收集的样本中发现了G. cambodgiensis eDNA的较高度.
- 这些发现表明,在COVID-19封锁后,G. cambodgiensis种群可能会增加.
结论:
- 环境DNA (eDNA) 分析是一种高效和有前途的方法,用于调查鱼群,特别是在具有挑战性的环境中.
- 报道称,COVID-19封锁期间似乎无意中使石头的小鱼群受益,可能有助于其补给.
- 该研究强调了适应性监测策略的重要性,如eDNA,在全球性破坏中为物种保护.
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