|Table of Contents|

Study on Fish Diversity in Autumn and Winter Around GuangxiHepu Dugong Nature Reserve and Adjacent Waters(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2021年04期
Page:
76-84
Research Field:
·生态学·
Publishing date:

Info

Title:
Study on Fish Diversity in Autumn and Winter Around GuangxiHepu Dugong Nature Reserve and Adjacent Waters
Author(s):
Zhang Di1; 2; Dai Jianhua2; Meng Xiangyao2; Yang Baotian1; Zhang Hongke3; Zhou Yu3; Qiao Ying4; Chen Bingyao2
(1.School of Life Sciences,Shenyang Normal University,Shenyang 110034,China)(2.School of Life Sciences,Nanjing Normal University,Nanjing 210023,China)(3.Hepu Dugong National Nature Reserve Management Center,Guangxi Zhuang Autonomous Region,Beihai 536000,China)(4.The Fourth Institute of Oceanography,Ministry of Natural Resources,Beibu Gulf Cetacean Research and Conservation Center,Beihai 536000,China)
Keywords:
Dugong Reserve; community structure; dominant species; diversity; fish resources
PACS:
S932.4/Q-9
DOI:
10.3969/j.issn.1001-4616.2021.04.010
Abstract:
Guangxi Hepu Dugong National Nature Reserve is located in the northeastern part of the Beibu Gulf,and aimed at protecting cetaceans currently. For clarifying the food resources of cetaceans,we conducted bottom trawl surveys of fish resources in Dugong reserve and adjacent waters in the autumn and winter of 2018-2019. The results showed that a total of 124 species of fish were caught,belonging to 14 orders,44 families and 92 genera. The relative importance index IRI showed that the striped eel catfish(Plotosus lineatus)in October 2018 was the dominant species,while pufferfish(Takifugu alboplumbeus)and tropical sand goby(Amoya caninus)in January 2019,and offshore ponyfish(Equulites rivulatus)and deep pugnose ponyfish(Secutor ruconius)in October 2019,correspondingly. The average catch showed a seasonal increase and an inter-annual declination. The cluster analysis indicated that fish community structure in different three periods varied significantly. The average genus-family diversity index(G-F)of fish were relatively high,which were 0.68,0.75 and 0.71,respectively in three periods. To sum up,the diversity of fish resources in the Dugong Reserve was relatively high,the community structure varied significantly,and the catch has declined. It is recommended to strengthen the protection of fish resources in this area.

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Last Update: 2021-12-15