Abstract
The effects of two pyrethroid insecticides, cypermethrin and fenvalerate, on a green alga ( Scenedesmus bijugatus) and three species of cyanobacteria ( Synechococcus elongatus, Nostoc linckia, and Phormidium tenue), all isolated from a black cotton soil, were studied using either cell number or chlorophyll a as toxicity criterion. All the four species were either unaffected or stimulated at 5 μg ml −1. Of the two insecticides, cypermethrin, at 10 to 50 μg ml −1, inhibited S. bijugatus while these concentrations stimulated or only slightly inhibited the growth of S. elongatus. There was a significant inhibition in the growth of S. bijugatus and stimulation in S. elongatus with 10 to 50 μg ml −1 fenvalerate. The growth of N. linckia was enhanced by both insecticides while P. tenue was significantly affected.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
