Title

扁担塘虾类群落组成、空间分布和生物量估算

Translated Titles

Species Composition, Spatial Distribution and Biomass of Shrimp Community in the Biandantang Lake

Authors

秦海明(Hai-Ming Qin);张堂林(Tang-Lin Zhang);李钟杰(Zhong-Jie Li);洪一江(Yi-Jiang Hong)

Key Words

虾类群落 ; 空间分布 ; 种群估算 ; 扁担塘 ; Shrimp community ; Spatial distribution ; Population estimation ; Lake Biandantang

PublicationName

水生生物學報

Volume or Term/Year and Month of Publication

29卷4期(2005 / 07 / 01)

Page #

379 - 384

Content Language

簡體中文

Chinese Abstract

The species composition, spatial distribution and biomass of shrimps in the Biandantang Lake, Hubei province, were investigated by sampling with pop-net (10m^2) in the Autumn of 2002. The total of 44287 individuals belonging to 6 species, 5 genera and 2 families, were collected from the 31 sampling sites. The dominant species were Macrobrachium nipponense, Caridina nilotic gracilipes and Neocaridina denticulate sinensis, which contributed 99.3% to the total. In terms of water depth, the lake was classified into 3 water-depth areas: shallow area (<1.0m), medium-depth area (1.0-1.5m) and deep area (>1.5m) Based on the type and cover of aquatic vegetation, the lake was categorized into 4 habitat types: Vallisnerria spiralis habitat, Ceralophyllum demersum habitat, Myriophyllum spicatum habitat, and naked habitat. For dominant shrimps, significant difference in density was not observed among 3 water-depth areas (ANCOV, P>0.05); whereas, it was found among 4 habitat types (ANCOV, P<0.01). Each of the dominant species preferred the Vallisnerria spiralis habitat. The density and the biomass of all shrimps in the lake were estimated to be 83.36ind/m^2 and 3.97g/m^2, respectively, of which C. nilolic gracilipes contributed 64.69ind/m^2 and 1.53g/m^2, M. nipponense 8.99ind/m^2 and 2.09g/m^2, and N. denticulate sinensis 8.61ind/m^2 and 0.22g/m^2.

English Abstract

The species composition, spatial distribution and biomass of shrimps in the Biandantang Lake, Hubei province, were investigated by sampling with pop-net (10m^2) in the Autumn of 2002. The total of 44287 individuals belonging to 6 species, 5 genera and 2 families, were collected from the 31 sampling sites. The dominant species were Macrobrachium nipponense, Caridina nilotic gracilipes and Neocaridina denticulate sinensis, which contributed 99.3% to the total. In terms of water depth, the lake was classified into 3 water-depth areas: shallow area (<1.0m), medium-depth area (1.0-1.5m) and deep area (>1.5m) Based on the type and cover of aquatic vegetation, the lake was categorized into 4 habitat types: Vallisnerria spiralis habitat, Ceralophyllum demersum habitat, Myriophyllum spicatum habitat, and naked habitat. For dominant shrimps, significant difference in density was not observed among 3 water-depth areas (ANCOV, P>0.05); whereas, it was found among 4 habitat types (ANCOV, P<0.01). Each of the dominant species preferred the Vallisnerria spiralis habitat. The density and the biomass of all shrimps in the lake were estimated to be 83.36ind/m^2 and 3.97g/m^2, respectively, of which C. nilolic gracilipes contributed 64.69ind/m^2 and 1.53g/m^2, M. nipponense 8.99ind/m^2 and 2.09g/m^2, and N. denticulate sinensis 8.61ind/m^2 and 0.22g/m^2.

Topic Category 生物農學 > 動物學