| 引用本文: | 温周瑞,谢平,徐军.太湖贡湖湾虾类种类组成与时空分布特征.湖泊科学,2011,23(6):961-966. DOI:10.18307/2011.0620 |
| WEN Zhourui,XIE Ping,XU Jun.Spatial and temporal patterns of species composition and distribution of shrimp community in the Gonghu Bay, Lake Taihu. J. Lake Sci.2011,23(6):961-966. DOI:10.18307/2011.0620 |
|
| 摘要: |
| 分别于2005年4月、7月、10月利用蹦网对贡湖湾虾类种类组成和时空分布进行调查.共采集到虾类9605尾, 属于2科3属5种, 分别是秀丽白虾(Exopalaemon modestus)、日本沼虾(Macrobrachium nipponense)、锯齿新米虾中华亚种(Neocaridina denticulata sinensis)、细足米虾(Caridina nilotica gracilipes)、细螯沼虾(Macrobrachium superbum).其中, 秀丽白虾的数量占总数量的63.79%、细足米虾占13.93%, 锯齿新米虾中华亚种占12.69%, 日本沼虾占9.46%, 细螯沼虾占0.11%.虾类密度分布随生境类型和季节不同而有差异, 不同生境中虾类密度分布由大到小顺序是:微齿眼子菜区、混合植被区、马来眼子菜区、沿岸少草区及裸地区, 生物量分布的大小顺序是:微齿眼子菜区、马来眼子菜区、混合植被区、沿岸少草区及裸地区.季节分布中, 虾类密度和生物量分布最大的均为夏季(7月), 其次为春季(4月)和秋季(10月)。 |
| 关键词: 虾类 种类组成 时空分布 贡湖湾 太湖 |
| DOI：10.18307/2011.0620 |
| 分类号: |
| 基金项目:国家水体污染控制与治理科技重大专项项目(2008ZX07101-001);国家自然科学基金项目(30870428)联合资助 |
|
| Spatial and temporal patterns of species composition and distribution of shrimp community in the Gonghu Bay, Lake Taihu |
|
WEN Zhourui1,2, XIE Ping2, XU Jun2
|
|
1.Hubei Fishery Science Institute, Wuhan 430071, P.R.China;2.Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P.R.China
|
| Abstract: |
| The species composition, spatial and temporal distribution of shrimps in the Gonghu Bay (Lake Taihu) were investiga-ted by sampling with pop-net in April, July and October of 2005.The total of 9605 individuals belonging to 5 species, 3 genera and 2 families were collected.The relative percentage of Exopalaemon modestus, Caridina nilotica gracilipes, Neocaridina denticulata sinensis, Macrobrachium nipponense to the tota1 is 63.79%, 13.93%, 12.69% and 9.46%, respectively.Based on the type and coverage of aquatic vegetation, the lake was categorized into 5 habitat types:Potamogeton maackianus habitat, mixed sub-merged macrophyte habitat, Potamogeton malaianus habitat, littoral zone with a little macrophyte habitat, and naked habitat.The density sequence of all shrimps from high to low is Potamogeton maackianus habitat, mixed submerged macrophyte habitat, Potamogeton malaianus habitat, littoral zone with a little macrophyte habitat and naked habitat.The biomass of shrimps decreased substantially in Potamogeton maackianus habitat, Potamogeton malaianus habitat, combined submerged macrophyte habitat, littoral zone with a little macrophyte habitat, and naked habitat.Each of the dominant species preferred the Potamogeton maackianus habi-tat.In terms of seasonal variation, both the largest density and biomass of the dominant shrimps were in summer (July), followed by spring (April) and autumn (October). |
| Key words: Shrimp species composition spatial and temporal distribution Gonghu Bay Lake Taihu |
