NDLI: Biflagellated Unicellular Algae as Detectors of Pesticide Contamination in Water

Content Provider	Springer Nature Link
Author	Krishnaswamy Chang, Sushila
Copyright Year	1997
Abstract	The flagellae of the unicellular marine algae Dunaliella bioculata and the freshwater Chlamydomonas resemble very much the cilia lining the bronchial tubes in human lungs. Lindane the commercial product containing 99% of the γ isomer of hexachlorocyclohexane was tested at various concentrations on the two algae.The concentrations of Lindane tested (5ppm - 30ppm) proved to be cytotoxic and also had a remarkable effect on the motility of both Dunaliella bioculata and Chlamydomonas. The ϕ, δ and δ isomers of lindane showed similar efects on Dunaliella bioculata.Cytoxicity was measured by growth curves and motility was quantified by microcinematography and Doppler laser velocimetry methods.At low concentrations of all the isomers (5-10 ppm), there was an acceleration of movement which lasted for 5 minutes followed by rapid deceleration of movement.Dunaliella was tested with the ionophore (mobile ion carrier) A23187 for calcium at concentration of (10-5M). The results were compared with that of Dunaliella with lindane at 15ppm and a combination of lindane (15ppm) and Ionophore A23187 (10-5M).The results show that the ionophore A23187 (10-5M) enhances the effect of lindane on the motility of Dunaliella. This could suggest that lindane induced effects may be due to interferences with the intracellular calcium flux.
Starting Page	487
Ending Page	502
Page Count	16
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	44
Issue Number	1-3
e-ISSN	15732959
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecology Atmospheric Protection/Air Quality Control/Air Pollution Environmental Management Monitoring/Environmental Analysis/Environmental Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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