Volume 15 Issue 4
Aug.  2019
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YING Rui, JIANG Li, YIN Fangmin, HUANG Jianrong, LI Zufu, WANG Yingyong, FENG Jianxiang. Analysis of community structure and diversity of nekton in Kaozhouyang Bay using gill nets and cages[J]. South China Fisheries Science, 2019, 15(4): 1-10. DOI: 10.12131/20190009
Citation: YING Rui, JIANG Li, YIN Fangmin, HUANG Jianrong, LI Zufu, WANG Yingyong, FENG Jianxiang. Analysis of community structure and diversity of nekton in Kaozhouyang Bay using gill nets and cages[J]. South China Fisheries Science, 2019, 15(4): 1-10. DOI: 10.12131/20190009
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Analysis of community structure and diversity of nekton in Kaozhouyang Bay using gill nets and cages

  • Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China

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  • Received Date: January 09, 2019
  • Revised Date: March 05, 2019
  • Accepted Date: March 24, 2019
  • Available Online: March 22, 2019
    Graphical Abstract
    • Abstract

  • To better understand the status of fishery resource of Kaozhouyang Bay, we have conducted a seasonal investigation of the community structure and diversity of the nekton by using gill nets and cages net from November 2017 to July 2018. A total of 93 economic species were collected, and among them 61 were fish belonging to 11 orders and 33 families, accounting for 64.52% of the total species number, and the rest were crustaceans. Perciformes (45.16%) and Clupeiformes (7.52%) which were mostly warm water species were the two largest orders of fish. The catches had significant seasonal variation (summer>spring>autumn>winter), and mostly fell in two intervals of 0−8 g and 8−64 g. The diversity indices in Kaozhouyang Bay showed obvious variation. The species richness index was 0.81−3.63; the Shannon-Wiener index was 0.81−2.03; the evenness index was 0.55−1.69. No significant difference was found in the richness index, Shannon-Wiener index and evenness index among different seasons and stations. In conclusion, the total fishery resources in Kaozhouyang Bay are relatively small. The biodiversity shows obvious seasonal variation, while the spatial variation is insignificant.

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