1. A dinoflagellate bloom caused by multiple species of Kareniaceae in the coastal waters of Fujian in June 2022 and its adverse impacts on Brachionus plicatilis and Artemia salina.
- Author
-
Wang, Xin, Liu, Chao, Zhang, Qing-Chun, Chen, Jin-Fei, Wang, Jin-Xiu, Zhao, Qi-Yu, Yan, Tian, and Yu, Ren-Cheng
- Subjects
TERRITORIAL waters ,DINOFLAGELLATE blooms ,BRACHIONUS ,ARTEMIA ,PLANKTON blooms ,KARENIA brevis ,MARINE zooplankton ,COASTS - Abstract
Recently, dinoflagellate blooms have frequently occurred in the coastal waters of Fujian, East China Sea. In June 2022, a fish-killing bloom of Kareniaceae species occurred in this region. In this study, four species of Kareniaceae, namely, Karenia longicanalis , K. papilionacea , Karlodinium veneficum , and Karl. digitatum were identified from this bloom event based on the results of single-cell PCR and clone libraries, and intraspecies genetic diversity was found in the Karl. veneficum population. The results of acute toxicity assays of the bloom water to two zooplankton species (Brachionus plicatilis and Artemia salina) demonstrated this bloom event strongly inhibited their swimming capacities and survival. The results of this study suggested that the bloom events caused by multiple species of Kareniaceae in the Fujian coastal waters had adverse impacts on the local fishery resources and zooplankton community. • A fish-killing bloom of Kareniaceae multiple species outbroke in Fujian coast in June 2022. • The bloom was dominated by Karenia longicanalis , K. papilionacea , Karlodinium veneficum , and Karl. digitatum. • Karl. veneficum population has intraspecies genetic diversity. • The bloom strongly inhibited the survival of Brachionus plicatilis and Artemia salina. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF