Characterization of Dinophysis acuminata from the Yellow Sea, China, and its response to different temperatures and Mesodinium prey | Zendy

Han Gao | Zendy; AN Xin-long | Zendy; Lei Liu | Zendy; Ke Zhang | Zendy; Dao-Qiong Zheng | Zendy; Mengmeng Tong | Zendy

Open Access

Characterization of Dinophysis acuminata from the Yellow Sea, China, and its response to different temperatures and Mesodinium prey

Author(s) -

Han Gao,

AN Xin-long,

Lei Liu,

Ke Zhang,

Dao-Qiong Zheng,

Mengmeng Tong

Publication year - 2017

Publication title -

oceanological and hydrobiological studies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.271

H-Index - 22

eISSN - 1897-3191

pISSN - 1730-413X

DOI - 10.1515/ohs-2017-0043

Subject(s) - dinophysis , biology , diarrhetic shellfish poisoning , toxin , ciliate , predation , okadaic acid , botany , zoology , shellfish , ecology , algal bloom , microbiology and biotechnology , phytoplankton , fishery , aquatic animal , genetics , nutrient , phosphatase , phosphorylation , fish <actinopterygii>

Dinophysis species are distributed worldwide and cause diarrheic shellfish poisoning (DSP). This paper documents the first successful culture of a Dinophysis (DAYS01) strain taken off Xiaoping Island, the Yellow Sea, China. The strain was identified as Dinophysis acuminata Claparède & Lachmann by morphological and phylogenetic analysis. The effects of temperature and different Mesodinium prey on the physiological and toxigenic characteristics of D. acuminata DAYS01 were also investigated. The results showed that the toxin concentration (toxin amount per ml of culture) increased with an increase in cell densities. Okadaic acid (OA), dinophysistoxin 1 (DTX1) and pectenotoxin 2 (PTX2) were the major toxin components of DAYS01, with the highest recorded toxin content of 5.66, 0.56 and 192.87 ng ml -1 culture medium, respectively. The prey type significantly influenced the growth yield in Dinophysis cultures. There was an effect of prey on the total toxin content, suggesting that the origin or strain of ciliate directly impacted the D. acuminata blooms and the overall toxin concentration in the system

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