

FOLLOWUS
1.College of Life Science and Technology, Jinan University, Guangzhou 510632, China
2.Key Laboratory of Aquatic Eutrophication and Control of Harmful Algae Blooms of Guangdong Higher Education Institutes, Guangzhou 510632, China
3.Department of Science Research, Beijing Museum of Natural History, Beijing 100050, China
4.Fujian Fishery Resources Monitoring Center, Fuzhou 350003, China
LÜ Songhui, lusonghui1963@163.com
收稿:2019-07-08,
录用:2019-7-30,
网络首发:2019-09-08,
纸质出版:2020-05
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Who is the "murderer" of the bloom in coastal waters of Fujian, China, in 2019?[J]. 海洋湖沼学报(英文), 2020,38(3):722-732.
Jingyi CEN, Jianyan WANG, Lifen HUANG, et al. Who is the "murderer" of the bloom in coastal waters of Fujian, China, in 2019?[J]. Journal of Oceanology and Limnology, 2020, 38(3): 722-732.
Who is the "murderer" of the bloom in coastal waters of Fujian, China, in 2019?[J]. 海洋湖沼学报(英文), 2020,38(3):722-732. DOI: 10.1007/s00343-019-9178-6.
Jingyi CEN, Jianyan WANG, Lifen HUANG, et al. Who is the "murderer" of the bloom in coastal waters of Fujian, China, in 2019?[J]. Journal of Oceanology and Limnology, 2020, 38(3): 722-732. DOI: 10.1007/s00343-019-9178-6.
On May 24-29
2019
a bloom occurring in Pingtan coastal areas of Fujian Province caused mass mortality of cage-cultured fish (
Plectorhinchus cinctus
and
Pagrosomus major
). During the bloom
two major causative organisms were present:
Prorocentrum donghaiense
(at a concentration of 1.46×10
7
cells/L) and an unknown naked dinoflagellate (4.58×10
6
cells/L). The naked dinoflagellate was isolated and cultured in this study
and its morphological features were examined using light microscopy and scanning electron microscopy. The large subunit (LSU) of the rRNA gene and the internal transcribed spacer (ITS) region of the naked dinoflagellate were also sequenced for field bloom samples and lab culture strains (PT-A and PT-B). On the basis of its morphological characteristics and molecular sequences
the unknown naked dinoflagellate was identified as
Karlodinium digitatum
. According to the phylogenetic analysis
the
Karl
.
digitatum
was most closely related to
Karlodinium australe
and
Karlodinium armiger
and the three species clustered into a single clade of
Karlodinium
with bootstrap/posterior probability values of 95%/0.99 and 86%/0.99 inferred from LSU and ITS sequences
respectively.
Karl
.
digitatum
was first reported as
Karenia
digitata
a new harmful algal species bloomed in Hong Kong
China
in 1998. In present study
we gave a detailed morphological and phylogenetic description of
Karl
.
digitatum
and submitted the molecular sequences of this species to GenBank for the first time.
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