Weathered oil: effect on hatchability of heron and gull eggs
- Port Aransas Marine Lab., TX
Contact with weathered oil seems more likely for waterbirds than contact with fresh oil; however, the effects of weathered oil on embryo survival have only partially been explored. Results of one study showed that 20 ..mu..L of 4 week-old crude oil applied to the eggshell surface caused a significant decrease in embryo survival of mallard (Anas platyrhynchos) eggs. In that study, oil was weathered under laboratory conditions using fresh water. To our knowledge, there have been no tests to determine the effects on egg hatchability of oil naturally weathered in marine habitats. The present study assesses the effects of external applications of naturally weathered crude oil on embryo survival of Louisiana heron (Hydranassa tricolor) and laughing gull (Larus atricilla) eggs.
- OSTI ID:
- 6863423
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 25:2; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020900 -- Petroleum-- Environmental Aspects
551000 -- Physiological Systems
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ECOSYSTEMS
BIRDS
ECOSYSTEMS
EGGS
ENERGY SOURCES
FOSSIL FUELS
FUELS
LIFE CYCLE
PETROLEUM
REPRODUCTION
TOXICITY
VERTEBRATES
VIABILITY
WEATHERING