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    Author(s): Jonathan H. Gilbert; Patrick A Zollner; Adam K. Green; John L. Wright
    Date: 2009
    Source: American Midland Naturalist. 162: 327-334.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (158.34 KB)


    We report on FMR of free-living American martens (Martes americana) in autumn and winter in northern Wisconsin. Mean body mass was significantly higher in males (1099 ± 43 [S.E.] g) than females (737 ± 28 g), with no significant difference by season. Daily mass change rates of martens did not differ from zero, and mass change rate and percent of body fat did not differ by gender or season. These data are consistent with our expectation that non-reproductive martens balance their energy budget on a near daily basis, even in winter, and rely little on body energy reserves.

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    Gilbert, Jonathan H.; Zollner, Patrick A; Green, Adam K.; Wright, John L. 2009. Seasonal field metabolic rates of American martens in Wisconsin. American Midland Naturalist. 162: 327-334.

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