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Daily Activity of Short-tailed Shrews (Blarina brevicauda) in Simulated Natural Conditions

Irwin G. Martin
The American Midland Naturalist
Vol. 109, No. 1 (Jan., 1983), pp. 136-144
DOI: 10.2307/2425523
Stable URL: http://www.jstor.org/stable/2425523
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Daily Activity of Short-tailed Shrews (Blarina brevicauda) in Simulated Natural Conditions
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Abstract

Long-term measurements of the activity of eight short-tailed shrews (Blarina) were made in simulated natural conditions. A significant correlation (p < 0.01) between total daily locomotor activity out of the nest and ambient temperature was found. Maximum activity levels (> 30%) were observed in summer. Temperature was significantly correlated to activity near midnight, but time active out of the nest during midday remained near 10% regardless of temperature. These shrews appeared to adjust their activity levels and patterns to avoid temperature extremes.

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