The raccoon (Procyon lotor) on St. Catherines Island, Georgia. 3, Presence of carotenoids in blood. American Museum novitates ; no. 2649

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New York, N.Y. : American Museum of Natural History
"Sixty-three blood samples were obtained by cardiac puncture from 53 raccoons from St. Catherines Island, Georgia, from January 20 to June 4, 1975 and from January 6 to 16, 1976. Blood was mixed with an equal volume of 10 percent aqueous trichloro-acetic acid to extract carotenoid pigments. The supernate was scanned with a Beckman double beam-grating spectrophotometer between wavelengths of 700 and 200 nm. Absorption maxima for carotenoids were adjusted and compared with the following independent variables: age, sex, and weight of the raccoons, season of the year during which blood was taken, and location of capture. All blood samples obtained from raccoons from St. Catherines Island contained carotenoids. None of the independent variables accounted for a significant amount of carotenoid variability. Further study of trace elements and environmental factors that may influence pelage color is warranted"--P. [1].
10 p. : 1 ill., map ; 26 cm.
Includes bibliographical references (p. 8-10).