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象山港游泳动物群落结构及多样性

姜亚洲1,林楠1,袁兴伟1,焦海峰2,凌建忠1,李圣法1**   

  1. (1中国水产科学研究院东海水产研究所, 农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090; 2宁波市海洋与渔业研究院, 浙江宁波 315012)
  • 出版日期:2013-04-10 发布日期:2013-04-10

Community structure and species diversity of nektons in Xiangshan Bay of East China.

JIANG Ya-zhou1, LIN Nan1, YUAN Xing-wei1, JIAO Hai-feng2, LING Jian-zhong1, LI Sheng-fa1**   

  1. (1East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 20009, China; 2Ningbo Academy of Oceanology and Fisheries, Ningbo 315012, Zhejiang, China)
  • Online:2013-04-10 Published:2013-04-10

摘要:

根据2011年4月(春季)、7月(夏季)和11月(秋季)象山港水域渔业资源定点调查资料,本研究对该水域游泳动物种类组成特征及群落结构的季节动态进行了分析。结果表明:调查海域共出现游泳动物96种,其中鱼类54种,甲壳类38种,头足类4种;黑棘鲷(Acanthopagrus schlegelii)、中国花鲈(Lateolabrax maculatus)和鲻(Mugil cephalus)等是该水域最为重要的优势种;不同季节象山港游泳动物群落的物种丰富度指数(D)、均匀度指数(J′)和多样性指数(H′)虽未呈现显著性差异,但其群落结构的季节差异却达到了显著性水平,夏季与春季、秋季的游泳动物群落结构显著不同;黑棘鲷等优势种类优势度存在的季节差异以及白姑鱼(Pennahia argentata)和三疣梭子蟹(Portunus trituberculatus)等洄游性种类仅能在象山港季节性分布,可能是造成该水域游泳动物群落结构季节差异的主要因素。ABC曲线分析结果表明,象山港水域游泳动物群落处于中度干扰状态,群落中个体较小、生长速度较快的r选择种类在该水域游泳动物群落中占据重要地位。
 

关键词: GABA, 甜瓜, 叶绿体, 抗氧化,  , AsA-GSH循环

Abstract:

Based on the data from beam-trawl and singletrawl surveys conducted in the April (spring), July (summer), and November (autumn) of 2011, this paper studied the seasonal variations in the community structure and biodiversity of nektons in the Xiangshan Bay. A total of 96 nekton species were collected, including 54 species of fish, 38 species of crustaceans, and 4 species of cephalopods. Acanthopagrus schlegelii, Lateolabrax maculates, and Mugil cephalus were the most commercially important species in the Bay. In different seasons, the biodiversity indices including species diversity (H′'), species richness (D), and evenness (J′) showed no significant differences, but the community structure in summer differed significantly with that in spring and autumn. Some migrant species, such as Pennahia argentata and Portunus trituberculatus, only appeared in the bay in summer to spend their nursing periods, which, together with the seasonal variations in the percentage contributions of some dominant species to the total biomass, could be the main factor inducing the seasonal variation in the species composition of the nekton community. The abundance and biomass curves (ABC) indicated that the nekton community in the Bay was moderately disturbed, and the fastgrowing, small-sized, and opportunistic
 r-selected species occupied the dominance in the nekton community.
 

Key words: GABA, melon, chloroplast, antioxidant, AsA-GSH recycle.