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Acute toxicity of the cosmopolitan bloom-forming dinoflagellate Akashiwo sanguinea to finfish, shellfish, and zooplankton
Xu, Ning1; Wang, Meng1; Tang, Yingzhong2,3; Zhang, Qun1; Duan, Shunshan1; Gobler, Christopher J.2
2018
Source PublicationAQUATIC MICROBIAL ECOLOGY
Volume80Issue:3Pages:209-222
SubtypeArticle
AbstractThe unarmored dinoflagellate Akashiwo sanguinea is a well known cosmopolitan harmful alga; however, the toxic nature of this alga has yet to be examined using multiple clonal isolates. Here we examined the toxicity of 3 clonal cultures of A. sanguinea, including JX13 and JX14, isolated from Daya Bay, South China Sea, and AS2, isolated from Chesapeake Bay, USA, to multiple aquatic animals including species of finfish, shellfish, shrimp, and zooplankton. The whole-cell cultures of A. sanguinea exhibited acute lethal effects on the shrimp Litopenaeus vannamei, the bivalve Meretrix meretrix, and 2 species of fish (Mugil cephalus and Mugilidae sp.) with 72 h mortalities ranging from 20 to 100%. The sonicated and filtrated cultures were lethal to brine shrimp Artemia salina, while the filtrates of whole-cell cultures were not, suggesting that the toxins are intracellular. Boiling and freezing led to significant reductions in toxicity. A. sanguinea toxicity differed among the Chinese strains, and the hemolytic activity of 1 Chinese strain was 3-fold greater than that of the US strain. Cultures in exponential phase displayed stronger toxicity, and the greatest toxicity of A. sanguinea was observed at 20 degrees C and a salinity of 35, conditions optimal for growth of the alga. Toxicity was enhanced by increased nutrient supply, suggesting that this species could both directly (via increased growth) and indirectly (e.g. via enhanced toxin production) become more toxic in response to eutrophication. Collectively, our findings suggest that the ability to produce and release toxin(s) may promote A. sanguinea blooms by suppressing predators and competitors.
KeywordAkashiwo Sanguinea Toxicity Hemolytic Activity Algal Toxin Aquatic Animal Harmful Algal Bloom
DOI10.3354/ame01846
Indexed BySCI
Language英语
WOS IDWOS:000418366100001
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/154323
Collection海洋生态与环境科学重点实验室
Affiliation1.Jinan Univ, Dept Ecol, Key Lab Eutrophicat & Red Tide Prevent, Guangdong Higher Educ Inst, Guangzhou 510632, Guangdong, Peoples R China
2.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA
3.Chinese Acad Sci, Inst Oceanol, Key Lab Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Xu, Ning,Wang, Meng,Tang, Yingzhong,et al. Acute toxicity of the cosmopolitan bloom-forming dinoflagellate Akashiwo sanguinea to finfish, shellfish, and zooplankton[J]. AQUATIC MICROBIAL ECOLOGY,2018,80(3):209-222.
APA Xu, Ning,Wang, Meng,Tang, Yingzhong,Zhang, Qun,Duan, Shunshan,&Gobler, Christopher J..(2018).Acute toxicity of the cosmopolitan bloom-forming dinoflagellate Akashiwo sanguinea to finfish, shellfish, and zooplankton.AQUATIC MICROBIAL ECOLOGY,80(3),209-222.
MLA Xu, Ning,et al."Acute toxicity of the cosmopolitan bloom-forming dinoflagellate Akashiwo sanguinea to finfish, shellfish, and zooplankton".AQUATIC MICROBIAL ECOLOGY 80.3(2018):209-222.
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