Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors

doi:10.7717/peerj.6482

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors
	Zhang, Hui1,2,3 ; Xian, Weiwei 1,2,3; Liu, Shude 1
刊名	PEERJ
	2019-02-21
卷号	7 页码:17
关键词	Yangtze Estuary Ichthyoplankton Environmental factor Seasonal variation
ISSN号	2167-8359
DOI	10.7717/peerj.6482
通讯作者	Zhang, Hui(zhanghui@qdio.ac.cn) ; Xian, Weiwei(wwxian@qdio.ac.cn)
英文摘要	Seasonal variations of the ichthyoplankton assemblage and its relationship with the environment were analyzed based on four seasonal surveys during 2012. Historical data was collected to be compared with results from previous years in order to indicate the seasonal and inter-annual variation of the ichthyoplankton assemblage in the Yangtze Estuary and the adjacent waters. A total of 3,688 individuals belonging to 5 orders, 9 families, and 15 species were collected. No samples were collected in the winter cruise. In 2012, all samples were separated into four ecotypes, which is comparable with the historical data from previous years. The Engraulis japonicus was the most abundant species of all teleost fishes. The E. japonicus was captured in every season and contributed the most to the abundance of ichthyoplankton, which was greater than that of previous years. This result may be due to the periodic fluctuations of E. japonicus or from the displacement of spawning grounds offshore for environmental reasons. The diversity indices of the assemblage were significantly different among seasons, with the number and abundance of the species peaking in the spring, while richness, evenness and diversity indices peaked in the autumn. The species richness of the ichthyoplankton varied from 0.74 to 1.62, the Pielou evenness index varied from 0.10 to 0.49 and the Shannon-Wiener index varied from 0.19 to 1.04. The results of CCA analysis showed that the major factors affecting the ichthyoplankton assemblage differed throughout the seasons. Chia was the key factor affecting the ichthyoplankton in 2012. These seasonal and inter-annual variations likely resulted from migrations associated with fish spawning as well as the environment. Compared with data from previous studies, the relationship between the assemblage structure of ichthyoplankton and corresponding environmental variables have undergone a decline.
资助项目	National Natural Science Foundation of China[31872568] ; International Partnership Program of Chinese Academy of Sciences (CAS-JSPS)[GJHZ1885] ; Natural Science Foundation of China-Shandong Joint Fund for Marine Ecology and Environmental Sciences[U1606404] ; Youth Talent Support Program of the Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao)[LMEES-YTSP-2018-01-12]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PEERJ INC
WOS记录号	WOS:000459359000007
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/155491]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Zhang, Hui; Xian, Weiwei
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hui,Xian, Weiwei,Liu, Shude. Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors[J]. PEERJ,2019,7:17.
APA	Zhang, Hui,Xian, Weiwei,&Liu, Shude.(2019).Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors.PEERJ,7,17.
MLA	Zhang, Hui,et al."Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors".PEERJ 7(2019):17.