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The effects of major environmental factors and nutrient limitation on growth and encystment of planktonic dinoflagellate Akashiwo sanguinea
Chen, Tiantian1,2; Liu, Yun1; Song, Shuqun1; Li, Caiwen1; Tang, Ying Zhong1,2; Yu, Zhiming1
2015-06-01
Source PublicationHARMFUL ALGAE
Volume46Issue:2015Pages:62-70
SubtypeArticle
AbstractThe bloom-forming dinoflagellate Akashiwo sanguinea is commonly observed in estuarine and coastal waters around the world. Annually recurrent blooms of this species have been observed in the coastal waters of China, particularly in the Sishili Bay, Yantai since 2004. However, limited studies have been conducted on the recurrence mechanism of A. sanguinea other than periodical monitoring of its population dynamics and associated environmental variables. Thus, to further explore the bloom and succession mechanisms of A. sanguinea in the field, we studied the effects cif major nutritional components on the growth and encystment of A. sanguinea, as well as the effects of key environmental factors on the growth of A sanguinea through a series of laboratory trials. Our results indicated that A sanguinea was able to grow well within the temperature range of 20-25 degrees C, salinity range of 20 - 30, with the maximum laboratory irradiance of 78.14 mu E m(-2) s(-1) , and was able to survive and grow in low nutrient. However, lower concentrations of nutrients (e.g., nitrate, phosphate) and higher ammonium exerted different degrees of limiting effects on the growth of A sanguinea, and induced 2.3-21.24% of vegetative cells to form resting cysts simultaneously in laboratory cultures. On the other hand, very limited or no cyst formation was observed in nutrient-replete or extremely low nutrient cultures, indicating the threshold effect of nutritional stress on the encystment of A. sanguinea. The physiological strategy of encystment of A sanguinea in nutrient-limiting environment facilitates the survival and succession of A sanguinea species in fluctuating seawaters, and provides seed sources for reoccurring algal blooms under favorable environmental conditions. (C) 2015 Elsevier B.V. All rights reserved.
KeywordDinoflagellate Cysts Harmful Algal Blooms Nitrogen Phosphorus Nutrient Limitation
DOI10.1016/j.hal.2015.05.006
Indexed BySCI
Language英语
WOS IDWOS:000368466200007
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Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/95227
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10039, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen, Tiantian,Liu, Yun,Song, Shuqun,et al. The effects of major environmental factors and nutrient limitation on growth and encystment of planktonic dinoflagellate Akashiwo sanguinea[J]. HARMFUL ALGAE,2015,46(2015):62-70.
APA Chen, Tiantian,Liu, Yun,Song, Shuqun,Li, Caiwen,Tang, Ying Zhong,&Yu, Zhiming.(2015).The effects of major environmental factors and nutrient limitation on growth and encystment of planktonic dinoflagellate Akashiwo sanguinea.HARMFUL ALGAE,46(2015),62-70.
MLA Chen, Tiantian,et al."The effects of major environmental factors and nutrient limitation on growth and encystment of planktonic dinoflagellate Akashiwo sanguinea".HARMFUL ALGAE 46.2015(2015):62-70.
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