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1 October 1991 POTENTIAL NATURAL EXPOSURE OF MISSISSIPPI SANDHILL CRANES TO AFLATOXIN B1
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Abstract

A survey was conducted to determine if carcinogenic mycotoxins were present in foods consumed by Mississippi sandhill cranes (Grus canadensis pulla). Samples of field corn (Zea mays) (n = 111) and chufa (Cyperus esculentus) (n = 20), obtained in 1987, 1988 and 1989 on the Mississippi Sandhill Crane National Wildlife Refuge (MSCNWR) and nearby private lands were analyzed for aflatoxin B1(AB1), ochratoxin A and sterigmatocystin using thin layer chromatography. Chufa samples were negative for all three mycotoxins. Aflatoxin B1 was found in corn at concentrations from 5 to 5,000 ppb; the other mycotoxins were not found in corn. Contaminated corn was found in 72% of all corn fields, but the proportion of contaminated fields was 57 to 100% for the 3-yr period. Contamination with AB1 was greatest in corn obtained from the ground post-harvest. Overall, 32% of corn samples from the ground had levels ≥200 ppb with a mean of 427 ppb (range = 5 to 5,000 ppb) in contaminated fields. In 1989, mean AB1 concentration in corn on the ground was 5 to 1138 ppb for individual fields. The concentration of AB1 was ≤200 ppb in all corn samples from upright stalks. The study demonstrated that AB1 is available to sandhill cranes and at levels that may pose a serious health threat.

Couvillion, Jackson, Ingram, Bennett, and McCoy: POTENTIAL NATURAL EXPOSURE OF MISSISSIPPI SANDHILL CRANES TO AFLATOXIN B1
C. E. Couvillion, J. R. Jackson, R. P. Ingram, L. W. Bennett, and C. P. McCoy "POTENTIAL NATURAL EXPOSURE OF MISSISSIPPI SANDHILL CRANES TO AFLATOXIN B1," Journal of Wildlife Diseases 27(4), 650-656, (1 October 1991). https://doi.org/10.7589/0090-3558-27.4.650
Received: 25 February 1991; Published: 1 October 1991
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