You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. 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.
Laboratory Observations on the Vesper Rat
Dale E. Birkenholz and William O. Wirtz, II
Journal of Mammalogy
Vol. 46, No. 2 (May, 1965), pp. 181-189
Published by: American Society of Mammalogists
Stable URL: http://www.jstor.org/stable/1377836
Page Count: 9
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.
Preview not available
The growth, development and general behavior of Nyctomys sumichrasti were observed during a 13-month period. Adults are primarily nocturnal. In the laboratory, family units or individuals raised together reside with each other; strangers to the group are not tolerated. Mating behavior, copulation and care of the young are described. The gestation period is approximately 30 days. Litter size averages two. The young reach adult size in approximately 6 weeks. Rate of development is rapid. The young crawl slowly at 2 days of age, and well at 5 days. When the eyes open at 15 to 18 days, coordination approximates that of the adults.
Journal of Mammalogy © 1965 American Society of Mammalogists