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  • Title: Embryotoxicity of Corexit 9500 in mallard ducks (Anas platyrhynchos).
    Author: Wooten KJ, Finch BE, Smith PN.
    Journal: Ecotoxicology; 2012 Apr; 21(3):662-6. PubMed ID: 22105827.
    Abstract:
    Embryotoxicity of the oil dispersant Corexit 9500 was examined using fertilized mallard duck eggs. Corexit 9500 was topically applied below the air cell to eggs in volumes ranging from 0 to 100 μL on day 3 of incubation. The highest incidence of mortality occurred at developmental stage 4, one day post-Corexit 9500 application. Hatching success was significantly decreased among eggs treated with ≥ 20 μL of Corexit 9500 as compared to controls (P ≤ 0.047). No egg treated with ≥ 40 μL successfully hatched. The application volume resulting in 50% mortality (corrected for control survival) was determined to be 15.5 μL. Developmental stage at embryo death was also significantly decreased compared to controls in eggs exposed to 40 μL (P = 0.0042) and above.
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