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Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors
Zhang, Hui1,2,3; Xian, Weiwei1,2,3; Liu, Shude1
2019-02-21
Source PublicationPEERJ
ISSN2167-8359
Volume7Pages:17
Corresponding AuthorZhang, Hui(zhanghui@qdio.ac.cn) ; Xian, Weiwei(wwxian@qdio.ac.cn)
AbstractSeasonal 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.
KeywordYangtze Estuary Ichthyoplankton Environmental factor Seasonal variation
DOI10.7717/peerj.6482
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000459359000007
PublisherPEERJ INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/155491
Collection海洋生态与环境科学重点实验室
Corresponding AuthorZhang, Hui; Xian, Weiwei
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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