Acute toxicity of organophosphate insecticide, dichlorvos in relation to selected water hardness for the freshwater zooplankters.

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dc.contributor.authorGupta, Ashok Kumaren_US
dc.contributor.authorVerma, Girraj Prasaden_US
dc.contributor.authorJain, Khyali Lalen_US
dc.date.accessioned2008-11-21en_US
dc.date.accessioned2009-06-02T04:13:44Z
dc.date.available2008-11-21en_US
dc.date.available2009-06-02T04:13:44Z
dc.date.issued2008-11-21en_US
dc.description.abstractToxicity of organophosphate insecticide, i.e. dichlorvos has been investigated in relation to selected water hardness for the freshwater zooplankters such as Moina, Daphnia, cyclops and nauplii. Results revealed that dichlorvos was highly toxic to the tested zooplankters, as the LC50 values are noticed in ppb. Trend of sensitivity for different zooplankters to dichlorvos was recorded as Moina < Daphnia < nauplii < cyclops. The LC50 were found to change significantly with the change in water hardness. The zooplankters were more susceptible to dichlorvos at water hardness of 275 mgl(-1) as compared to water hardness of 540 mgl(-1) as revealed from low LC50 values. The range of safe dischargeable concentrations (1.063-1.137ppb) were too low as compared to harmless or safe concentrations (43.895-89.194 ppb) for the zooplankters at both the hardness.en_US
dc.description.affiliationCollege of Fisheries, Maharana Pratap University ofAgriculture and Technology, Udaipur 313 001, India. drashokgupta9712@rediffmail.comen_US
dc.identifier.citationGupta AK, Verma GP, Jain KL. Acute toxicity of organophosphate insecticide, dichlorvos in relation to selected water hardness for the freshwater zooplankters. Journal of Environmental Biology. 2008 Nov; 29(6): 837-9en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/113623
dc.language.isoengen_US
dc.source.urihttps://www.geocities.com/j_environ_biol/en_US
dc.subject.meshAcute Toxicity Testsen_US
dc.subject.meshAnimalsen_US
dc.subject.meshDichlorvos --toxicityen_US
dc.subject.meshFresh Water --chemistryen_US
dc.subject.meshInsecticides --toxicityen_US
dc.subject.meshLethal Dose 50en_US
dc.subject.meshTime Factorsen_US
dc.subject.meshWater Pollutants, Chemical --toxicityen_US
dc.subject.meshZooplankton --drug effectsen_US
dc.titleAcute toxicity of organophosphate insecticide, dichlorvos in relation to selected water hardness for the freshwater zooplankters.en_US
dc.typeJournal Articleen_US
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