| 摘要: |
| 根据2012年5月和2013年11月对日照近岸海域进行的底拖网调查资料,分析了该海域虾蟹类的种类组成、优势种和生物多样性。调查区域共捕获虾蟹类25种,根据相对重要性指数(IRI) 计算优势种为8种,其中经济价值较高的中大型虾蟹类5种,分别为口虾蛄(Oratosquilla oratoria)、戴氏赤虾(Meraenaeopsis dalei)、鹰爪虾(Trachypenaeus curvirostris)、日本蟳(Charybdis japonica)和三疣梭子蟹(Portunus trituberculatus)。分别计算了日照近岸海域春、秋季虾蟹类群落的多样性指数(H")、丰富度指数(D) 和均匀度指数(J)。该海域虾蟹类群落多样性整体处在较低的水平,在生物量和丰度上经济较高的中大型虾蟹类物种占据优势。 |
| 关键词: 黄海，日照，虾蟹类，物种多样性，优势种 |
| DOI： |
| 分类号:S931 |
| 基金项目:国家重点研发计划项目（2017YFC1403700） |
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| Shrimps and crabs composition in the coastal waters of Rizhaoin spring and autumn |
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WANG J W1, DU M2, LIN S1, ZHANG S P1, PU S C1, HUANG J1, LI F3
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1.Shandong Provincial Key Laboratory of Marine Ecology and Environment Disaster Prevention and Mitigation;2.North China Sea Environmental Monitoring Center, State Oceanic Administration;3.Shandong Marine Resource and Environment Research Institute
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| Abstract: |
| To understand speciesScomposition and diversity of shrimps and crabs in the coastal waters of Rizhao City , the data were collected in bottom trawl surveys in May 2012 and November 2013. In total,25 species of shrimps and crabs were identified. By IRI index, Oratosquilla oratoria、Meraenaeopsis dalei、Trachypenaeus curvirostris、Charybdis japonica and Portunus trituberculatus were ranked as the LargeSedible dominant species with highScommercialSvalue in the study area.Shannon diversity (H"), Pielou"s evenness index (J) and Margalef"s species richness diversity (D) of shrimp and crab communities in spring and autumn were calculated.The community diversity of shrimps and crabs in the sea area is at a low level as a whole, and the LargeSedible shrimps and crabs with high commercialSvalue in biomass and abundance occupy an advantage. |
| Key words: the Yellow Sea Rizhao City shrimps and crabs species diversity dominant species |