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DNA-based Fish Species Identification Protocol
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在泰国市场上交易的鱼的基于DNA的物种识别
Wanlada Klangnurak1, Sirachai Arunrugstichai2, Petch Manopawitr3
1Department of Animal Production Technology and Fishery, School of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Ladkrabang, Bangkok, 10520 Thailand.
Conservation genetics (Print)
|June 26, 2023
概括
泰国的鱼翅产品包含至少15种,其中斑尾和夜占主导地位. 许多检测到的物种是受威胁的或是该地区的新物种,突出显示了迫切的保护需求.
科学领域:
- 海洋生物学 海洋生物学
- 保护遗传学 保护遗传学
- 野生动物贸易 野生动物贸易
背景情况:
- 鱼翅是非常有价值的海产品,在全球范围内导致了显著的弹性枝状鱼种群减少.
- 过度捕捞鱼是一个主要的保护问题,特别是在亚洲.
- 了解贸易中的物种组成对于有效的保护至关重要.
研究的目的:
- 用DNA条形码识别泰国鱼市场存在的鱼物种.
- 根据IUCN红色名单的类别评估这些物种的保护状况.
- 为保护策略提供信息,并提高对弹性树枝贸易的认识.
主要方法:
- 使用细胞染色体c氧化酶子单元I (COI) 基因片段进行DNA条形编码,用于物种识别.
- 收集来自泰国四个地点的各种鱼翅样本.
- 对物种组成的分析和与区域记录和IUCN红色名单状态的比较.
主要成果:
- 在分析的片样本中,至少发现了15种不同的鱼物种.
- 斑尾 (Carcharhinus sorrah) 和夜 (Carcharhinus signatus) 是最常见的物种.
- 34%的可识别样本包括以前未在该地区记录的物种.
- 62%的检测到的物种在IUCN红色名单上被列为受威胁的类别.
结论:
- 泰国的鱼翅贸易涉及到各种各样的物种,包括受威胁的和区域新发现的物种.
- DNA 条形码为监测和了解野生动物产品的成分提供了一个至关重要的工具.
- 调查结果强调,迫切需要采取有针对性的保护行动,并提高认识,以减轻鱼翅贸易的影响.
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