摘要
根据2009年7月在罗源湾进行的底拖网和笼壶调查资料,对该海域游泳动物组成特征进行了初步研究。结果表明,在该海域共捕获游泳动物96种,底拖网平均相对资源量为5.43 kg/h。以生物量为单位计算群落多样性,Shannon-Wiener种类多样性指数H'平均为1.793,Margalef种类丰富度指数D平均值为2.386,Pielou种类均匀度指数J'平均为0.653。优势种为日本囊对虾(Penaeus japonicus)、小鳞沟鰕虎鱼(Oxyurichthys microlepis)、日本蟳(Charybdis japonica)、海鳗(Muraenesox cinereus),常见种为髭鰕虎鱼(Triaenopogon barbatus)、鹰爪虾(Trachypenaeus curvirostris)、锯塘鳢鱼(Prionobutis koilomatodon)、绿斑细棘鰕虎鱼(Acentrogobius chlorosigmatoides)、口虾蛄(Oratosquilla oratoria)。与历史资料相比,罗源湾游泳动物种类数明显减少,渔业资源呈现出小型化和低质化的趋势。
Based on the bottom trawl and crab pot investigation in Luoyuan bay in July 2009, the characteris- tics of nekton composition were preliminarily analyzed. Results indicated that there were 96 species collected from the bottom trawl and crab pot surveying. The mean relative catch of bottom trawl was 5.43 kg/h. The Shannon diversity index H＇, species richness D and evenness index J＇ were 1. 793, 2. 386 and 0. 653 for nek- ton community, respectively. The dominant species were Penaeus japonicus, Oxyurichthys microlepis, Charyb- dis japonica and Muraenesox cinereus. The common species were Triaenopogon barbatus, Trachypenaeus curvir- ostris, Prionobutis koilomatodon, Acentrogobius chlorosigmatoides and Oratosquilla oratoria. Compared with historical data, nekton resources were obviously declining and the fishery resources were characterized by small - scale fishes of low values.
出处
《福建水产》
2012年第6期449-454,共6页
Journal of Fujian Fisheries
基金
福建省南方石化罗源湾海域渔业资源调查
关键词
罗源湾
游泳动物
群落结构
多样性
Luoyuan Bay
nekton
community structure
diversity
