ORIGINAL RESEARCH
Effects of DDT and Dicofol on Life Table
Demography of the Freshwater Rotifer
Brachionus calyciflorus Pallas
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1
College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, China
2
Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystems in Wanjiang City Belt,
College of Life Sciences, Anhui Normal University, Wuhu, China
3
School of Earth and Environment, Anhui University of Science and Technology, Huainan, China
Submission date: 2019-02-03
Final revision date: 2019-04-05
Acceptance date: 2019-04-24
Online publication date: 2019-12-05
Publication date: 2020-02-13
Corresponding author
Xiao-Ping Xu
College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China, Beijing Middle Road, Wuhu, Anhui Province, China, 241000, Wuhu, China
Pol. J. Environ. Stud. 2020;29(2):1945-1951
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ABSTRACT
DDT and dicofol are two typical persistent organic pollutants and raise great concerns around
the world because of their resistance to decay in the environment. Little is known regarding their
effects on life table variables of rotifers, including age at first reproduction, life expectancy at birth,
net reproductive rates, generation time, life span, the intrinsic rate of population increase, and finite
rate of increase. In the present study, the effects of DDT and dicofol on survival and reproduction
of the rotifer Brachionus calyciflorus were investigated using life table demography. The results showed
that treatments with 0.32-1.28 mg/L DDT and 0.64-1.28 mg/L dicofol significantly declined the agespecific
survivorship of rotifers. Treatments with 0.32 and 0.64 mg/L DDT and 0.32-1.28 mg/L dicofol
significantly prolonged the juvenile period of rotifers. Treatment with 0.08 mg/L DDT significantly
prolonged survival time of rotifers. All tested life table variables of rotifers, except generation time,
were significantly influenced by DDT and dicofol at concentrations of 0.08-1.28 mg/L. In addition, DDT
revealed far greater negative impacts on life table demographic variables of rotifers in comparison to
dicofol.