Acute toxicity of the water-soluble fraction of Cook Inlet crude oil to the Manila clam

1978 ◽  
Vol 9 (12) ◽  
pp. 324-331 ◽  
Author(s):  
Pepsi Nunes ◽  
Pete E. Benville
1977 ◽  
Vol 1977 (1) ◽  
pp. 575-578 ◽  
Author(s):  
C. C. Brodersen ◽  
S. D. Rice ◽  
J. W. Short ◽  
T. A. Mecklenburg ◽  
J. F. Karinen

ABSTRACT The sensitivity of adult and larval Alaskan shrimp and crabs to the water-soluble fraction (WSF) of Cook Inlet crude oil was measured by tests using 96-hour static bioassays at the water termperatures that these animals normally encounter. Larval crustaceans were found to die more slowly than adults, making it necessary to measure sensitivity in terms of concentrations causing moribundity (death imminent) instead of in terms of concentrations causing death during exposure. The cessation of all motion and reaction was found to indicate moribundity in adults, and the cessation of swimming was found to indicate morbundity in larvae exposed for 96 hr. Ninety-six-hour LC50's for moribundity for stage I larvae ranged from 0.95 to 1.8 ppm depending on species, while 96-hr LC50's for adults ranged from 1.9 to 4.2 ppm oil. Sensitivities for stage I-VI larvae of coonstripe shrimp ranged between 0.24 ppm and 1.9 ppm. Larvae were more sensitive to oil than adults. The sensitivity of larvae depended on species and developmental stage. Larvae are probably more vulnerable than adults to oil exposure because of greater sensitivity to oil and greater susceptibility to predation. Cold-water species may be particularly vulnerable because of increased time spent as developing larvae.


2014 ◽  
Vol 57 (2) ◽  
pp. 97-103
Author(s):  
Joshua Idowu Izegaegbe ◽  
Femi Francis Oloye ◽  
Efere Martins Obuotor ◽  
Victor Funso Olaleye ◽  
Stephen Adeyeni


Author(s):  
Abraham, Chiedozie Nicholas ◽  
J. Udom, Godwin ◽  
C. Patrick-Iwuanyanwu, Kingsley

This study evaluated the Nephrotoxic effect of water soluble fraction (WSF) of Bonny Light Crude Oil (BLCO). After preparation of the WSF and a range finding test, the Wistar albino rats were administered three concentrations (25%, 50% and 100%) of WSF of BLCO for 30 and 60days. Data from the study showed that Urea concentration increased significantly (p≤0.05) with increasing dose of BLCO ranging from 14.71 mg/dl in the control to 35.28 mg/dl in the 100% group after 30days and 14.28 mg/dl in the control to 41.08mg/dl in the 100% group after 60days, Creatinine concentration increased significantly (p≤0.05) from 0.22 mg/dl in the control to 0.82mg/dl in the 100% group after 60 days administration while electrolyte (Na, K, Cl) concentration increased significantly (p≤0.05) with increasing dose of BLCO after 60days administration. Histopathological examination of the kidney was characterized by partial partitioning of the glomerular tufts, obliteration of the Bowman’s capsule and distortion of the renal tubules. The findings in this research suggest that WSF of BLCO induced nephrotoxicity.


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