Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (7): 871-874.

Previous Articles     Next Articles

Effect of suspended silt from dredging at Yangtze estuary on Brachionus plicatilis

WANG Jinqiu1, XU Zhaoli2, SHI Chun1, CHEN Yaqu 2   

  1. 1. School of Life Sciences, State Key Laboratory of Genetics Engineering, Fudan University, Shanghai 200433;
    2. East China Sea Fishery Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090
  • Received:2000-04-13 Revised:2002-02-10 Online:2002-07-15

Abstract: The effect of suspended silt from dredging at Yangtze estuary on Brachionus plicatilis was investigated by clonal culture (to construct life table) and population accumulative culture. The intrinsic increasing rate of the rotifer population was greatly reduced under different concentrations (1, 3, 5, 7 and 9mg穖L-1) of silt, from 29.6% to 64.1%, and to a maximum of 130.0%. The suspended silt affected population survival rate, rather than its reproduction rate. In accumulative culture, the densities of female, males, parthenogenetic eggs, and resting eggs in the population were not affected by silt. It was concluded that the presence of suspended silt should have a certain negative influence on the rotifer population in dredging Yangtze estuary.

CLC Number: