Diversity and distribution analysis of eukaryotic communities in the Xiangshan Bay, East China sea by metabarcoding approach

被引:1
|
作者
Li, Shuangqing [1 ]
Luo, Ningjian [1 ]
Li, Chuang [1 ]
Mao, Shuoqian [2 ]
Huang, Hailong [1 ]
机构
[1] Ningbo Univ, Sch Marine Sci, Ningbo 315211, Zhejiang, Peoples R China
[2] Ningbo Inst Oceanog, Ningbo 315832, Peoples R China
关键词
Eukaryotic plankton; Eukaryotic microalgae; Xiangshan bay; Metabarcoding approach; QUANTITATIVE PCR ASSAY; PHYTOPLANKTON COMMUNITY; SPATIAL HETEROGENEITY; KARLODINIUM-VENEFICUM; MICROBIAL EUKARYOTES; ZOOPLANKTON; SEDIMENTS; RESPONSES; ESTUARY; WATERS;
D O I
10.1016/j.marenvres.2024.106451
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Eukaryotic communities play an important role in the coastal ecosystem of Xiangshan Bay, a narrow semi-closed bay famous for fisheries and marine farming. However, information on the diversity and composition of eukaryotic communities in Xiangshan Bay remains unclear. In this study, the metabarcoding approach was utilized to comprehensively investigate the eukaryotic plankton community structure and dominant taxa, particularly eukaryotic microalgae, in the Xiangshan Bay over a period of four months in 2018. The results showed that the three major phyla were Arthropoda, Chlorophyta, and Bacillariophyta. The richness indices revealed that species richness peaked in February and was at its lowest in May. Diversity indices showed that the samples collected in May had the lowest diversity. Centropages was detected in the samples of all months, however, its highest dominance was observed in the samples collected in February. In addition, compared to other months, a greater proportion of eukaryotic microalgae was witnessed in March. The three eukaryotic algae with highest abundances in March were Cyclotella , Prorocentrum , and Thalassiosira . Moreover, high diversity of pico-sized (0.2 -2.0 jim) phytoplankton (which are often easily missed by microscopy) was discovered in this study by using metabarcoding approach. This study highlights the strength and significance of the metabarcoding approach to uncover a large number of eukaryotic species which remains undetectable during application of conventional approaches. The findings of this study reveals that the eukaryotic community structure varies noticeably in both time and space throughout sampling period, with temperature being the most important environmental factor influencing these changes. This study lays a solid foundation to understand eukaryotic plankton composition, temporal and spatial dynamics and the distribution mechanism of eukaryotic plankton community in Xiangshan Bay, providing theoretical reference for further studies related to marine ecology.
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页数:9
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