Seasonal variation of community structure and diversity of ichthyoplankton in the Laizhou Bay

Yang Yanyan; Zhu Mingming; Xu Bingqing; Li Fan; Gao Yanjie; Sun Chunxiao; Wei Xiao; Wang Bin

doi:10.12284/hyxb2021052

Volume 43 Issue 9

Sep. 2021

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Article Navigation > Haiyang Xuebao > 2021 > 43(9): 59-70

Yang Yanyan，Zhu Mingming，Xu Bingqing, et al. Seasonal variation of community structure and diversity of ichthyoplankton in the Laizhou Bay[J]. Haiyang Xuebao，2021, 43(9)：59–70 doi: 10.12284/hyxb2021052

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Seasonal variation of community structure and diversity of ichthyoplankton in the Laizhou Bay

doi: 10.12284/hyxb2021052

1.
Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Reseach Institute, Yantai 264006, China
2.
The Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, China

Received Date: 2020-11-30
Rev Recd Date: 2020-12-16

Available Online: 2021-06-16

Publish Date: 2021-09-25

Abstract

Abstract

In order to understand the population dynamics of ichthyoplankton and the changing laws of biodiversity in the Laizhou Bay, four investigations (respectively in spring, summer, autumn and winter) of 20 positions in the Laizhou Bay from 2014 to 2015, the seasonal variations of species composition and community structure of ichthyoplankton in this area, involving its dominant species, community diversity and seasonal turnover rate were studied in this paper. The results showed that 135275 fish eggs and 2456 larvae were collected, total 22 species. Main species of ichthyoplankton changed significantly with the seasons, from Engraulis japonicus and Liza haematocheilus in spring, to Thryssa kammalensis and Allanetta bleekeri in summer, to Protosalanx hyalocranius in autumn, to Zoarces elongates in winter. The richness index (D) and diversity index (H′) were the highest in summer, and the evenness index (J′) was the highest in autumn. The species turnover rate from spring to summer was the lowest. Analysis of the results of clustering using R language with the highest likelihood suggest the existence of three assemblages of ichthyoplankton in the surveyed waters: spring group, summer and autumn group, winter group. The main divergent species of spring group and summer-autumn group, spring group and winter group were Engraulis japonicus. While the main divergent species of summer autumn group and winter group were Zoarces elongates and Thryssa kammalensis. This study shows that there are significant seasonal differences in the species composition, quantity distribution and biodiversity of ichthyoplankton in the Laizhou Bay. The research results supplement the basic data of fish early replenishment resources in the Laizhou Bay and provide basis for fishery resources conservation in the Laizhou Bay.
- fish eggs,
- fish larvae,
- seasonal change,
- biodiversity,
- community structure,
- R language

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References

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