日本中部东京湾利用水性eDNA、沉积eDNA和渔获量调查评估的鱼类区系比较

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Mengyao Zhu , Mari Kuroki , Tatsushi Kobayashi , Takashi Yamakawa , Tetsuya Sado , Keita Kodama , Toshihiro Horiguchi , Masaki Miya
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引用次数: 2

摘要

这项研究使用水环境DNA(eDNA)、沉积eDNA和底拖网捕捞量调查数据,基于日本中部东京湾2年的实地采样,评估了鱼类区系。水生eDNA检测到的鱼类物种数量最多,其次是沉积eDNA,然后是渔获量调查。由于夏季内陆和中部地区缺氧的普遍性,以及秋季河口地区公海的影响,各数据类型(内陆、中部和河口地区)检测到的鱼类数量和组成因季节而异。在东京湾的优势物种中,eDNA(在水中和沉积物中)比副渔获物调查更频繁地检测到中上层和近海鱼类。相比之下,栖息在沙底或泥底的软骨鱼类和底栖鱼类往往是通过渔获量调查而不是eDNA记录的。对于非优势物种,eDNA比渔获量调查更敏感;偶尔迁徙的鱼类更有可能被水性eDNA检测到,而栖息在岩礁地区的小型稀有鱼类往往被沉积性eDNA探测到。因此,来自水性eDNA、沉积性eDNA和渔获量调查样本的信息可以相互补充,以提高鱼类区系监测的准确性和代表性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparison of fish fauna evaluated using aqueous eDNA, sedimentary eDNA, and catch surveys in Tokyo Bay, Central Japan

This study evaluated fish fauna using aqueous environmental DNA (eDNA), sedimentary eDNA, and bottom-trawl catch survey data, based on 2-year field samplings in Tokyo Bay, central Japan. Aqueous eDNA detected the highest number of fish species, followed by sedimentary eDNA and then catch surveys. Due to the prevalence of hypoxia in the inner and central areas during summer and the influence of open ocean water in the mouth area during autumn, the number and composition of fish species detected by each data type by area (inner, central, and mouth areas) significantly differed depending on the season. Among the dominant species in Tokyo Bay, pelagic and inshore fishes were more frequently detected by eDNA (both in water and sediment) than by catch surveys. In contrast, cartilaginous and benthic fishes inhabiting sandy or muddy bottoms tended to be recorded by catch surveys rather than by eDNA. For non-dominant species, eDNA was more sensitive than catch surveys; occasional migratory fishes were more likely to be detected by aqueous eDNA, while small, rare fish species inhabiting rocky reef areas tended to be detected by sedimentary eDNA. Thus, information from aqueous eDNA, sedimentary eDNA, and catch survey samples could complement each other to improve the accuracy and representativeness of fish fauna monitoring.

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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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