File:Bulletin (1971-) (20235210138).jpg

Title: Bulletin
Identifier: bulletin7477sout (find matches)
Year: 1971- (1970s)
Authors: Southern California Academy of Sciences
Subjects: Science; Natural history; Natural history
Publisher: Los Angeles, Calif. : The Academy
Contributing Library: New York Botanical Garden, LuEsther T. Mertz Library
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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7975 SEASONAL CYCLES IN BELDING GROUND SQUIRRELS 133
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Figure 4. Seasonal changes in body weights of five individual adult male Spermophiliis beldingi beldingi at Tioga Pass. were smaller than adult males but their v^'eight gain due to fattening, proportionately, was the same, 54.3 percent (Table 4). Females had fluctuations in body weight as- sociated with parturition early in the season and, later, abrupt weight increases due to fattening (Fig. 5). According to body weight changes, fe- males fattened proportionately less than males; 44.0 percent in 18 adults and 41.5 percent in 14 yearlings (Table 4). The fattening response took less time in females, however, and their rate of fattening was higher (Table 4). Using the body weight records of 20 frequently retrapped females, 8 adults and 12 yearlings.

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