College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao 266033, China; East China Sea Environmental Monitoring Center, State Oceanic Administration, Shanghai 201206, China.
College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China.
Mar Pollut Bull. 2022 Jan;174:113243. doi: 10.1016/j.marpolbul.2021.113243. Epub 2021 Dec 14.
Green macroalgal blooms caused by Ulva species have influenced the Shandong Province for 15 consecutive years since 2007, leading to serious damage to the marine environment. Great biomasses of attached Ulva prolifera on Neopyropia aquaculture rafts in the Yellow Sea were considered as sources of blooms. However, it is still unclear whether U. prolifera could survive and settle in the Qingdao coastal environment, Shandong, thus leading to local Ulva blooms in the future. In this research, sampling of Ulva macroalgae in seven Portunus trituberculatus aquaculture ponds along the coast of Qingdao was conducted on August 21, 2019. In total, 24 samples collected from the ponds were analyzed through methods of molecular biological identification (ITS, 5S, and rps2-trnL sequences) and genetic analysis. All the aquaculture ponds contained large amounts of floating Ulva macroalgae, which consisted of three species: U. prolifera, Ulva meridionalis, and Ulva pertusa. Among these species, U. meridionalis, which is usually found in southern Japan, also causes the green tide. In addition, all Ulva macroalgae floated on the surfaces of aquaculture ponds, and were discarded into the local coastal area by aquaculturist. This research raised our awareness of the importance of controlling the spread of the green tide related macroalgae.
自 2007 年以来，绿潮已连续 15 年影响山东省，对海洋环境造成严重破坏。黄海养殖筏上大量附着的藤壶被认为是绿潮的来源。然而，目前尚不清楚 U. prolifera 是否能够在山东青岛沿海环境中生存和定居，从而导致未来出现当地绿潮。在这项研究中，于 2019 年 8 月 21 日对青岛沿海七个三疣梭子蟹养殖池塘中的大型绿藻进行了采样。总共对来自池塘的 24 个样本进行了分子生物学鉴定（ITS、5S 和 rps2-trnL 序列）和遗传分析。所有养殖池塘都含有大量漂浮的大型绿藻，包括三种：U. prolifera、U. meridionalis 和 U. pertusa。其中，通常在日本南部发现的 U. meridionalis 也会引发绿潮。此外，所有漂浮在养殖池塘表面的大型绿藻都被养殖者丢弃到当地沿海地区。这项研究提高了我们对控制与绿潮相关的大型藻类传播的重要性的认识。
