Acute toxicity effects of a herbicide, Glycel on freshwater ciliates Paramecium caudatum, Oxytricha fallax and Blepharisma intermedium

Q4 Environmental Science Ecology, Environment and Conservation Pub Date : 2023-01-01 DOI:10.53550/eec.2023.v29i03.064

N.R. Amanchi, None S. Busa, None Bandaru V., P.S. Shetty

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Abstract

The aim of this work was to assess the effect of Glycel on Paramecium caudatum , Oxytricha fallax and Blepharisma intermedium as this herbicide is mostly used in home, garden, and commercial applications. Acute toxicity tests were carried out for 3 hours and probit analysis is used to calculate the LC 50 values which were 63.09 ppm, 977.23 ppm and 1047.12ppm against to Paramecium caudatum, Blepharisma intermedium and Oxytricha fallax respectively. Paramecium caudatum was found more sensitive among test species, Blepharisma intermedium was moderate and Oxytricha fallax was found relatively tolerant. Behavioural manifestations like speedy egesting of food vacuoles, erratic swimming, moving to corners of cavity block and loss of movement coordination were observed during acute exposure. The various sub-lethal concentrations of Glycel were used to evaluate food vacuole, contractile vacuole activity and macronuclear aberrations tests and these tests proved that protozoan ciliates can act as alternative models to pesticide toxicity studies.

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除草剂Glycel对淡水纤毛虫尾草履虫、褐毛虫和布利法利马的急性毒性作用

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Ecology, Environment and Conservation Environmental Science-Nature and Landscape Conservation

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期刊介绍： Published Quarterly Since 1995. Ecology, Environment and Conservation is published in March, June, September and December every year. ECOLOGY, ENVIRONMENT AND CONSERVATION is one of the leading International environmental journal. It is widely subsribed in India and abroad by Institutions and Individuals in education and research as well as by Industries, Govt. Departments and Research Institutes.