Effect of Ixtoc I crude oil and Corexit 9527 dispersant on spot (Leiostomus xanthurus) egg mortality
Journal Article
·
· Bull. Environ. Contam. Toxicol.; (United States)
A comparison is made of the effects of Ixtoc I crude oil and Corexit 9527 dispersant on the egg mortality of a fish species (spot) occurring in the Gulf of Mexico. Experiments were conducted to (1) determine the effect of the dispersant at various concentrations when added either to sea water alone or the LC/sub 20/ oil-accomodated seawater (OAS), (2) compare the effects of LC/sub 20/ OAS/Corexit (20 ppm) together, and (3) test eggs from time of fertilization of LC/sub 20/ OAS and Corexit (20 ppm), and to LC/sub 20/ OAS alone. The egg stages in the last experiments included blastula, gastrula, and early embryo. Results show that untreated Ixtoc crude, at a dilution of 1 part oil-accomodated seawater to 2.5 parts seawater, is less toxic to L. xanthurus eggs than crude dispersed chemically by Corexit 9527 applied at concentrations greater than 20 ppm. This level is equal to 0.5 U.S. gal/acre, but application of these results as field guidelines should be treated with caution as the experiments did not simulate ocean-oil spill conditions with respect to factors such as depth of the water column, surface agitation, and solar radiation. (JMT)
- Research Organization:
- Duke Univ., Durham, NC
- OSTI ID:
- 5402638
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 29; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020900 -- Petroleum-- Environmental Aspects
560304* -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ATLANTIC OCEAN
BIOLOGICAL EFFECTS
CARIBBEAN SEA
DOSE-RESPONSE RELATIONSHIPS
EGGS
ENERGY SOURCES
FISHES
FOSSIL FUELS
FUELS
GULF OF MEXICO
HYDROGEN COMPOUNDS
MORTALITY
OIL SPILLS
OXYGEN COMPOUNDS
PETROLEUM
POLLUTION
SEAS
SEAWATER
SURFACE WATERS
SURFACTANTS
SYNERGISM
VERTEBRATES
WATER
WATER POLLUTION
020900 -- Petroleum-- Environmental Aspects
560304* -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ATLANTIC OCEAN
BIOLOGICAL EFFECTS
CARIBBEAN SEA
DOSE-RESPONSE RELATIONSHIPS
EGGS
ENERGY SOURCES
FISHES
FOSSIL FUELS
FUELS
GULF OF MEXICO
HYDROGEN COMPOUNDS
MORTALITY
OIL SPILLS
OXYGEN COMPOUNDS
PETROLEUM
POLLUTION
SEAS
SEAWATER
SURFACE WATERS
SURFACTANTS
SYNERGISM
VERTEBRATES
WATER
WATER POLLUTION