生物多样性 ›› 2019, Vol. 27 ›› Issue (7): 787-795.DOI: 10.17520/biods.2019098

• 研究报告 • 上一篇    下一篇

南麂列岛东侧海域春秋季虾蟹类生物多样性

孙蓓蓓,俞存根(),刘惠,颜文超,张文俊,戴冬旭   

  1. 浙江海洋大学水产学院, 浙江舟山 316022
  • 收稿日期:2019-03-24 接受日期:2019-05-24 出版日期:2019-07-20 发布日期:2019-08-20
  • 通讯作者: 俞存根
  • 基金资助:
    国家自然科学基金(31270527)

Spring and autumn shrimp and crab biodiversity in the east Nanji Islands

Sun Beibei,Yu Cungen(),Liu Hui,Yan Wenchao,Zhang Wenjun,Dai Dongxu   

  1. Fishery College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022
  • Received:2019-03-24 Accepted:2019-05-24 Online:2019-07-20 Published:2019-08-20
  • Contact: Yu Cungen

摘要:

本文根据2017年11月和2018年5月对南麂列岛国家海洋自然保护区东侧海域进行渔业资源定点底拖网调查所获得的虾蟹类数据, 对调查海域的虾蟹类群落结构及多样性进行了研究。结果表明: (1)共鉴定出调查海域的虾蟹类30种, 其中虾类16种, 隶属于1目6科12属, 蟹类14种, 隶属于1目5科6属; (2)秋季虾蟹类物种数高于春季, 且春秋季物种数在整个调查海域大致呈现由北向南逐渐增多的趋势; (3)春季优势种依次为: 三疣梭子蟹(Portunus trituberculatus)、双斑蟳(Charybdis bimaculata)、日本鼓虾(Alpheus juponicus)、细巧仿对虾(Parapenaeopsis tenella)和日本蟳(Charybdis japonica), 秋季优势种均为蟹类, 依次为三疣梭子蟹、双斑蟳和日本蟳; (4)虾蟹类Shannon-Wiener多样性指数(H')和Pielou均匀度指数(J')是春季大于秋季, 丰富度指数(D)则是秋季远高于春季; (5)根据聚类分析(CLUSTER)与非度量多维标度排序(non-metric multidimensional scaling, nMDS)分析, 可将虾蟹类划分为3个群落; (6)丰度/生物量曲线(abundance-biomass comparison curve, ABC曲线)显示, 南麂列岛调查海域的虾蟹类群落处于稳定未受干扰的状态。

关键词: 虾蟹类, 生物多样性, 群落结构, 南麂列岛东侧海域, 相对重要性指数

Abstract:

We studied the shrimp and crab community and species biodiversity by performing a survey of the bottom-trawling fishery resources in the eastern Nanji Islands National Marine Nature Reserve in November 2017 and May 2018. The results indicated that: (1) A total of 30 shrimp and crab species were identified, including 16 shrimp species belonging to 12 genera in 6 families of one order, and 14 crab species belonging to 6 genera in 5 families of one order. (2) The number of shrimp and crab species was higher in autumn than in spring, and there were gradually more species as we traveled southward across the survey area in both seasons. (3) Dominant species in the spring were Portunus trituberculatus, Charybdis bimaculata, Alpheus juponicus, Parapenaeopsis tenella and Charybdis japonica. Dominant species in the autumn were Portunus trituberculatus, Charybdis bimaculata and Charybdis japonica. There were no dominant shrimp species in the autumn. (4) The Shannon-Wiener diversity index and the Pielou’s evenness index were higher in the spring than in the autumn. The species richness index was much higher in the autumn than in the spring. (5) According to hierarchical cluster and non-metric multidimensional scaling (nMDS) analyses, shrimp and crabs can be divided into three communities. (6) The abundance-biomass comparison curve (ABC curve) showed that the shrimp and crab communities were stable and undisturbed.

Key words: shrimp and crab, biodiversity, community structure, the east of Nanji Islands