Quantal Response of Periwinkle (Tympanotonus fuscatus) after Exposure to Kerosene.
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Date
2014-05
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Abstract
Periwinkles (Tympanotonus fuscatus) handpicked from the New Calabar River were
acclimated to laboratory conditions in the research laboratory of the Chemistry Department
of the Ignatius Ajuru University of Education, Rumuolumeni, Port Harcourt. They were
subjected to concentrations (60, 90, 120, 150 and 200 ml/L) of a petroleum product,
kerosene and a control to examine the effect of acute exposure on mortality of the
periwinkles. The mean mortality of the periwinkles increasing with the concentration of the
kerosene and the exposure time. The mean lethal concentration (96 hr LC50) of the
kerosene was 111.14 ml/L, while the 96 hr LC99 was 433.94 ml/L and the probit equation at
that hour, Y= -0.80 + 0.007X was significant. The mean lethal time (MLT50) at 60, 90, 120,
150 and 200 ml/L with the associated confidence limits were 90.13 (52.94–126.45), 84.06
(61.40–110.50), 79.02 (42.00–105.06), 73.27 (40.74–96.30) and 70.17 (39.84–94.20) ml/L
respectively. The data obtained from the laboratory is an indication that kerosene is toxic
to periwinkles which can be extrapolated to field conditions in the event of a spill.
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Keywords
Kerosene, periwinkle, environment, quantal response, toxicity
Citation
Edori O S, Ekpete O A, Edori E S. Quantal Response of Periwinkle (Tympanotonus fuscatus) after Exposure to Kerosene. International Journal of Biochemistry Research & Review 2014 May-Jun ; 4 (3) : 253-259.