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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (5): 1746-1752.doi: 10.13287/j.1001-9332.202005.036

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Spatio-temporal niche of dominant shrimp species in the Zhongjieshan Islands Marine Protected Area, China

LIU Ming-hua1,2, LIANG Jun2,3, XU Han-xiang1,3*   

  1. 1Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China;
    2Marine Fisheries Research Institute of Zhejiang Pro-vince, Zhoushan 316021, Zhejiang, China;
    3Scientific Observing and Experimental Station of Fishery Resources for Fishing Grounds, Ministry of Agriculture and Rural Affairs/Key Laboratory of Sustai-nable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, Zhejiang, China
  • Received:2019-10-26 Online:2020-05-15 Published:2020-05-15
  • Contact: * E-mail: hxxu@vip.sina.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31702346), the Zhejiang Natural Science Fund (LY17C190006), and the Key Research and Development Program of Zhejiang Province (2019C02056).

Abstract: To understand the characteristics and living conditions of shrimp population in the Zhongjieshan Islands Marine Protected Area (MPA), according to the trawl survey data of the area in January, April, July and October 2018, we analyzed the spatio-temporal niche of dominant shrimp species based on the indices of relative importance, Shannon index, Pianka formula and Pearson correlation coefficient. The results showed that 16 shrimp species from 10 families and 13 genera were collected and identified. Palaemon gravier, Solenocera crassicorni, Alpheus distinguendus, Parapenaeopsis hardwickii and Alpheus japonicus were dominant species, belonging to four fami-lies and four genera. The temporal niche breadth of the dominant species varied greatly, while their spatial niche breadth was stable. The temporal niche breadth was significantly correlated with temperature suitability. The spatio-temporal niche breadth value of A. japonicus, the small shrimps, was highest. The temporal niche overlap value between P. hardwickii and S. crassicornis was the largest, indicating that the time synchronization was high and the seasonal competition was severe. There was a significant spatial niche overlap in all dominant species, indicating that the dominant species of shrimp had the same spatial homology, with strong regional competition. The spatio-temporal niche overlap value between P. hardwickii and P. gravieri was the largest, indicating that they had high similarities in physical and biological environment selecting, spawning and migratory habits, and fierce inter-specific competition. Our results could provide reference for the application of spatio-temporal niche of marine organisms.

Key words: Zhongjieshan Islands, niche breadth, niche overlap