Resting cysts of potentially harmful dinoflagellates in Korean coastal area

Title
Resting cysts of potentially harmful dinoflagellates in Korean coastal area
Author(s)
LIZHUN; 김은송; 김주환; 한명수; 신현호
KIOST Author(s)
Shin, Hyeon Ho(신현호)
Publication Year
2015-10-22
Abstract
Since the 1980’s the frequency of harmful algal blooms (HABs) caused by the cyst-forming dinoflagellates has increased dramatically in Korean coastal waters. Although the distribution of dinoflagellate resting cysts has been widely investigated in Korean coastal areas, the morphological characteristics of resting cysts of potentially harmful dinoflagellates are still unclear. Here we provide the descriptions of these potentially harmful dinoflagellates cystsin detail to help a better understanding of the morphological characteristics and biogeographic distribution of potentially harmful dinoflagellates. Sediment samples were collected from 51 stations in the southern coastal area, Korea. Viable resting cysts were isolated and induced to excysts, and identification was based on morphological characteristics and molecular phylogenetic positions of the germinated cells. 9 potentially harmful dinoflagellate species were identified: 7 potentially toxic species and 2 potentially bloom-forming species. The resting cysts of Gymnodinium aureolum, which has a smooth, thin wall and many pale lipid globules, were first observed from natural sediments. The presence of resting cysts of potentially harmful dinoflagellates suggests that further research deserves more attention and efforts in HAB monitoring and management.gated in Korean coastal areas, the morphological characteristics of resting cysts of potentially harmful dinoflagellates are still unclear. Here we provide the descriptions of these potentially harmful dinoflagellates cystsin detail to help a better understanding of the morphological characteristics and biogeographic distribution of potentially harmful dinoflagellates. Sediment samples were collected from 51 stations in the southern coastal area, Korea. Viable resting cysts were isolated and induced to excysts, and identification was based on morphological characteristics and molecular phylogenetic positions of the germinated cells. 9 potentially harmful dinoflagellate species were identified: 7 potentially toxic species and 2 potentially bloom-forming species. The resting cysts of Gymnodinium aureolum, which has a smooth, thin wall and many pale lipid globules, were first observed from natural sediments. The presence of resting cysts of potentially harmful dinoflagellates suggests that further research deserves more attention and efforts in HAB monitoring and management.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25235
Bibliographic Citation
PICES-2015, pp.262, 2015
Publisher
PICES
Type
Conference
Language
English
Publisher
PICES
Related Researcher
Research Interests

Marine bioresource,Marine phytoplankton diversity / ecology,Marine micropaleontology,해양생물자원,해양식물플랑크톤 다양성/생태학,해양미고생물학

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